Knee arthroscopy recovery: a staged rehab program

Which operation did you actually have?

Most people come to a page like this the evening of the operation or the day after, with a bandage, a pair of crutches and a leaflet that has gone missing. The first thing to know is that the word arthroscopy describes the way the surgeon got in, not what was done once they were there. Four of the commonest jobs through those small cuts have four different sets of rules, and a page that gives one recovery for all of them is giving three of its readers somebody else's plan.

OrthoInfo lists the work done through a knee arthroscope, and it includes trimming the meniscus, stitching a torn meniscus, trimming or rebuilding the damaged joint surface, taking out loose fragments of bone or cartilage, clearing inflamed joint lining, and reconstructing a torn anterior cruciate ligament. So the names on your paperwork matter more than the word arthroscopy does.

Here is how to work out which one you had, in the order that usually gets there fastest.

Look for the operation note, the discharge summary or the letter to your family doctor. The procedure is written on all three, usually in one line near the top.

Partial medial meniscectomy or partial lateral meniscectomy means a piece of the meniscus was trimmed away. Meniscus repair, or meniscal suture, means it was stitched back together, which is a different operation with a different timetable. Debridement, washout or lavage means loose and inflamed material was cleared out. Chondroplasty is the word for trimming and smoothing a damaged patch of the joint surface, and the surgical literature uses it interchangeably with arthroscopic cartilage debridement (Anderson and colleagues, 2017). Microfracture, drilling, a graft or a cartilage transplant means the joint surface was deliberately repaired rather than tidied, and that is the slowest group of all.

If you cannot find the paperwork, three questions usually settle it. Were you given crutches and told how much weight you may put through the leg, and for how many weeks? Were you given a brace, or told how far the knee is allowed to bend? Did anybody mention stitches inside the knee?

A yes to any of those points away from a simple trim, and the answer changes what you may do this week. Ring the team who operated and ask. That is a short phone call, and it is the most useful thing you can do today.

If nobody answers, ring the hospital switchboard and ask for the ward or the day surgery unit you went home from, and say you have had an operation this week. That is a call they take all the time and it does not have to be office hours, so it beats waiting for a clinic appointment. Until somebody answers, keep to whatever you were last told, and keep to the first 48 hours advice below, which needs nobody's permission: leg up, ankle moving, wound dry.

One more piece of sorting. An arthroscopy is not a knee replacement, and rehabilitation after a new joint is a different program: that is total knee replacement rehab, and the knee that will not bend after a replacement has its own page. If your operation was an ACL reconstruction, follow ACL reconstruction rehab instead, because a graft sets limits this page does not cover. And if you are still deciding whether to have a scope at all, the trial evidence is on meniscus tear surgery or physio.

How long does knee arthroscopy recovery take?

The published ranges are wide on purpose. The NHS puts recovery from an arthroscopy at anywhere from about a week to several months. OrthoInfo puts 6 to 8 weeks on getting back to most everyday physical activity, sometimes a good deal sooner than that, and it attaches a condition to the figure which matters more than the figure does: it applies unless you had a ligament reconstruction, a meniscus repair or cartilage restoration. Cleveland Clinic gives the same 6 to 8 weeks without naming those exceptions.

Both of them put the same tail on the figure, and the tail is the part people skip: higher impact activity, sport and heavy physical work can need longer than 6 to 8 weeks even when ordinary activity does not. So if your operation was one of those three, 6 to 8 weeks was never your number, and a page that quotes it at you without the exception has quoted you somebody else's recovery.

Healthdirect in Australia is blunter about the long tail, and where it puts that bluntness matters. Severe pain, stiffness and loss of use of the knee appear on its list of possible complications of this operation, not in its account of ordinary recovery. It says such a knee can take months or years to improve and that the pain and stiffness are sometimes permanent. So a knee that is severely painful, that you cannot use, or that is stiffening rather than loosening is not the slow end of normal and is not something to wait out. It goes to the team who operated.

Stiffness has a page of its own, because the questions it raises are different from the ones on this page. If the knee is tight rather than painful, or you are wondering whether a range that has stopped moving is slow or stalled, knee stiffness after surgery covers the straightening as well as the bend, the timetable surgeons think in when a range stops improving, and what a manipulation or a release actually involves. That is deliberately not repeated here. Most people reading this page had a short keyhole operation and will get their movement back with the exercises below, and the surgical end of the stiffness story would sit oddly in the middle of a program. The reason to know the other page exists is the window: when a knee that has stopped moving is considered for anything surgical, the decision is measured in weeks and months rather than years, so a range that has flattened is raised early rather than saved for a yearly review.

Those are not contradictions. They are one range that covers four operations, and the operation is what narrows it. OrthoInfo splits the two meniscus operations for exactly this reason: rehabilitation after a partial meniscectomy takes roughly 3 to 6 weeks, and after a meniscus repair about 3 to 6 months, because a repair has to heal before it can be trusted.

What nobody can give you is a date. Two people operated on in the same week, by the same surgeon, can be months apart if one had a trim and the other had the tear stitched. Work out which group you are in, then judge progress against the stage you are on rather than against the calendar.

After a partial meniscectomy, a debridement or a chondroplasty

These three are the quick group, and they behave similarly because nothing inside the knee has been stitched and left to heal. OrthoInfo says a partial meniscectomy usually allows weight through the leg immediately and full movement soon afterwards, and puts rehabilitation at roughly 3 to 6 weeks.

Read that as what is typical, not as permission. Some surgeons restrict this group anyway, because of what they found inside the joint, or because the trim was large, or because the kneecap surface was involved. If your own instruction is stricter than what you have just read, your instruction is the one that counts, and you keep to it until the team who gave it says otherwise. A page cannot see your knee and your surgeon has.

Two things sit behind that sentence, and both point the same way. The figure OrthoInfo gives is for a partial meniscectomy. It does not publish a weight bearing rule for a debridement or for a chondroplasty, and neither does anybody else we could find, which is why there is no line on this page saying those two carry no restriction. Chondroplasty is not even one operation: it covers a range of techniques from radiofrequency smoothing to abrasion to trimming the loose cartilage back to a stable rim, there is no standard of care for it, and the technique varies between surgeons (Anderson and colleagues, 2017).

There is something useful to say about why, though, and it beats a week number, because it tells you what to ask. A surgeon limits weight through the leg when something inside the knee has to heal while you are standing on it: stitches holding a torn meniscus together, a repaired patch of joint surface, or bone deliberately made to bleed so that a new surface grows. A trim, a washout and a smoothing take tissue away and leave nothing behind that has to knit, which is why this is the group most often allowed onto the leg early. Most often is still not an instruction, because only the surgeon knows what was found once the camera was inside, and a chondroplasty can be done alongside other work in the same operation.

OrthoInfo puts it in one line: your weight bearing status after the operation is dictated by what was performed during it. It adds that if you have any question about putting weight through the leg, you call your surgeon, and on this page that is the sentence to act on.

The other thing is that being allowed weight is not the same as being able to take it. The BMJ panel that reviewed this surgery notes that most people cannot bear full weight on the leg in the first week and may need crutches, and that driving and activity are limited while they recover (Siemieniuk and colleagues, 2017). So a knee that will not take your whole weight on day two is behaving normally, and it is not a reason to force it.

What the first fortnight actually looks like here is a knee that is swollen, stiff first thing in the morning, and surprisingly weak. The weakness is not damage. A joint full of fluid is one of the things that stops the thigh muscle switching on properly (Rice and McNair, 2010), so the leg feels less reliable than the soreness alone would explain, and the last few degrees of straightening go at the same time.

Read that for what it covers, which is a thigh that is slow and weak from the first day. It does not cover a leg you could lift straight and suddenly cannot, a knee that will not straighten at all, or a dip or gap you can feel just above or below the kneecap. Those are on the warning list at the foot of this page and they go to your surgical team the same day, not into another week of exercises. That is what stage 1 is built for, which is why it opens with quad sets and kneecap glides rather than squats.

After a meniscus repair, which is a different operation

A repair is the one place on this page where getting it wrong matters most, so it gets the plainest paragraph.

The torn edges have been stitched together and left to knit, which takes months rather than weeks. While that is happening, the stitches are what is holding the tear, and every step you take tests them. OrthoInfo puts rehabilitation after a repair at about 3 to 6 months for that reason.

A repair is protected in two ways, and both of the numbers belong to your own surgeon: how much weight goes through the leg, and how far the knee is allowed to bend. There is no standard version of either. Cong and colleagues (2024) put six real repairs to members of the American Orthopaedic Society for Sports Medicine and got 451 replies. Their starting point was that North America has no agreed plan for rehabilitation after a meniscus repair, and what the replies showed was that the limits track the tear: a tear that leaves the ring of the meniscus intact was let onto the leg sooner than one that breaks it, and 83 percent of the surgeons braced the knee whichever kind it was. So a week number from a page, this one included, tells you nothing about your own knee, and the limits you were given are the ones to work inside.

The size of that disagreement is worth seeing, because it explains why we will not print a figure. O'Donnell and colleagues (2017) pooled 15 studies covering 17 treatment groups and found four distinct patterns: two that restricted nothing much, two that limited movement, four that limited weight, and nine that limited both. Fried and colleagues (2021) looked at 88 studies and found the same thing from the other end: the week at which weight and movement were allowed back varied widely from one protocol to the next, and the criteria for releasing people to sport were reported too poorly to compare. Both sets of authors concluded there is no consensus, and we are not going to print the middle of a spread as though it were a rule.

That cuts one way only. If your surgeon has you off the floor entirely for a fortnight, or capped at a right angle for six weeks, nothing in the research above contradicts your plan. It sits at the careful end of a wide spread, and you keep to it. The restrictions that come off last are the ones on kneeling, deep or loaded bending, twisting on a planted foot, hopping and landing, and they are lifted well after the ones on walking. Being allowed to walk normally says nothing about being allowed to kneel.

For the non-surgical side of the same injury, including which tears tend to be repaired and which trimmed, see meniscus tear.

After cartilage repair or microfracture

If the joint surface was repaired rather than trimmed, this is the slowest group and the one where a borrowed timetable does the most harm. OrthoInfo's cartilage page says the repaired surface has to be protected while it heals, that you may not be able to put weight through the leg at all, that crutches are needed for the first few weeks or possibly longer depending on the procedure and where the damaged patch sat, and that it can be several months before strenuous activity is safe.

This is the group where the gap between the names matters most. A chondroplasty tidies a rough surface. A microfracture deliberately makes the bone underneath bleed so that a new surface can grow into it. Those two words can sit a line apart on an operation note and they are not the same operation. If the words microfracture, drilling, graft, transplant or cartilage repair appear on yours, work from your surgeon's plan and treat the staging below as background reading rather than as your program.

The first 48 hours

Nothing complicated happens here, and almost nobody is told it in a dose.

Keep the leg up when you are sitting. The NHS advises raising the leg while sitting to help the swelling, using an ice pack wrapped in a tea towel for 20 minutes every 2 to 3 hours, and wearing a compression stocking if you were given one. OrthoInfo adds keeping the leg elevated as much as you can for the first few days.

Three ice precautions travel with that advice. Never put ice on skin that cannot feel properly, keep something between the pack and your skin, and do not fall asleep on it. If you have had an operation on the knee, ask your surgical team before you put ice over the wound or the dressing, because teams differ on that.

Leave the wound alone and keep it dry. OrthoInfo says to keep the cuts clean and dry, and that your surgeon tells you when you may shower or bathe, so a bath, a swim and a hot tub all wait for that answer rather than for the skin to look closed. Small cuts into a joint are still a way into a joint. If you were given stockings or a medicine to lower the risk of a clot, which OrthoInfo says a doctor may prescribe after this operation, keep going with them for as long as you were told rather than stopping when the knee starts feeling better. And a dressing that soaks through with blood, or bleeding that does not stop with gentle pressure on the dressing, is a phone call to the team the same day rather than another dressing: Cleveland Clinic puts bleeding from the cuts at the top of its own list of reasons to ring after this operation.

Move the ankle and work the thigh. OrthoInfo's exercise guide after a knee arthroscopy runs at roughly 20 to 30 minutes, 2 or 3 times a day, with most of its early exercises held about 5 seconds and repeated around 10 times. That is the dose stage 1 below uses. It also says to check with your therapist or surgeon before doing any of them, which is not a formality on this page: whether you may load the leg at all is the one thing that differs between its readers.

Expect the knee to be painful and stiff at first, which is what the NHS says about arthroscopy generally. Expect to be more tired than you planned for. And read the warning signs at the foot of this page tonight rather than at three in the morning.

How long will you be on crutches?

This is one of the first questions people ask and one of the last to get a straight answer, because there is no single number. Which is probably why so few pages will commit to one.

OrthoInfo says most people need crutches or some other support after arthroscopic surgery, that your weight bearing status is decided by what was done during the operation, and that your surgeon tells you when it is safe to put weight through the foot and leg. After cartilage work it runs to the first few weeks or longer. Cleveland Clinic says you may need crutches, and may be given a brace to hold the knee in position while it heals.

So the honest version is this. For a straightforward trim, crutches are often support rather than a restriction, and they go when your team has told you your weight bearing is not limited and you can walk without limping. Even in that group, most people are leaning on something for the first week or so, which is the point made in the meniscectomy section above: allowed is not the same as able. For a repair or cartilage work the crutches are doing a job, and they come off on a date somebody has chosen for a reason. If you do not know which of those you are, that is the phone call again.

Two practical points while you are on them. Get the height set by a physio instead of guessing, because crutches set too long drive the shoulders up and make the whole business harder. And carrying things in your hands while on crutches is how people fall, so a small rucksack earns its place for a fortnight. Going up stairs, lead with the stronger leg; coming down, put the operated leg down first so the stronger one lowers you, and take one step at a time with a hand on the rail.

When can you drive again?

Ask your surgical team, and check your insurer, because an insurer can take a different view from a surgeon and it is your policy that pays.

The published advice sits in a range. The NHS says you should be able to drive once you have recovered and can perform an emergency stop, usually at least 2 weeks after the operation, and that you must not drive after a general anaesthetic. OrthoInfo puts it at 1 to 3 weeks for a minor procedure, with longer needed after a bigger repair or a reconstruction.

Then there is a figure that gets quoted at the strict end, and it deserves its context. A systematic review and meta-analysis of braking reaction time recommended returning to driving 6 weeks after knee arthroscopic procedures (Palma and colleagues, 2021). Four of its five knee studies were ACL reconstructions, only one looked at partial meniscectomy, chondroplasty and diagnostic arthroscopy, the knee studies were pooled together rather than separated, and the authors graded most of their own pooled analyses as low or very low certainty.

Their own limitations section says it in plainer words than we could: the effect of an ACL reconstruction on braking may not be comparable to the effect of a meniscus repair or a diagnostic arthroscopy, and separating the procedures might produce different recommendations from the one they printed. They also say reaction time is only part of driving, and name coming off strong painkillers, the strength of the operated leg and its movement as the rest of it. So 6 weeks is a reasonable figure for a reconstructed knee and it is not the number for a simple scope.

One study inside that review did look at a simple scope, and it needs reading carefully rather than being seized on. Hau and colleagues (2000) measured braking reaction times in 30 people before and after a right knee arthroscopy, against 25 people who had not been operated on, and the review records the procedures as partial meniscectomy, chondroplasty and diagnostic arthroscopy. Their braking was slower a week after the operation than it had been before it, 920 milliseconds against 736, and at four weeks it was still slower than the braking of the people in the same study who had not been operated on, 685 against 582. The authors concluded that it is appropriate to delay driving for at least a week, and that the actual date should be set by how the person performs on two clinical tests rather than by the week number.

Notice what that does and does not say. One week is a floor from 30 people in a single 20 year old study, graded low certainty by the review that pooled it, and at that one week mark the braking was still worse than it had been before the operation. It is not a clearance, it is more permissive than the NHS, and we are not adopting it as this page's number. What it does support is the NHS's own gate: the date comes from the test, not the calendar.

Which leaves the test that all of them come back to. Could you stamp on the brake, hard, right now, without a moment's hesitation because of the knee? If the answer is no, you are not ready, whatever week it is. Strong painkillers are a separate reason to wait, whatever the knee can do, and getting off them is one of the things Palma and colleagues name as part of being ready rather than an afterthought. And if your own team has told you longer than anything written here, theirs is the instruction.

Why is the knee still swollen weeks later?

Because the skin heals faster than the joint does, and the two are not connected. Healthdirect says it is common for the knee to be a little swollen for a few weeks after an arthroscopy, and that the knee itself can take months to improve. Cleveland Clinic frames the first few days as the sore and swollen part, which is true, and is why week four comes as a surprise to people.

Swelling matters here for a reason that has nothing to do with worry. It is one of the things that keeps the thigh muscle switched off (Rice and McNair, 2010), so a knee that stays full stays weak, and a weak thigh is what makes stairs and kerbs feel unreliable. Breaking that cycle is most of what the program below does, and it is why the swelling gets managed and not waited out: leg up, ice as above, and the amount of walking that leaves the knee no worse the next morning.

Three patterns here, and only the first of them is ordinary. Ordinary swelling creeps up through a busy day and settles overnight or with the leg up, and it shrinks a little week by week. The kind that needs a call arrives over a few hours, makes the knee feel tight and full, and hurts more than it did yesterday.

There is a third pattern between those two, and it is the one people sit on longest: swelling that never arrives fast but is not shrinking either, week after week, or is slowly getting bigger. That is not an emergency and it is not ordinary, so tell your surgical team or your physio in the next few days rather than giving it another month.

Back to the fast kind. That one is on the warning list on this page, and it goes to your surgical team the same day, because bleeding into the joint and an early infection look much the same from outside and Healthdirect names both among the things that can follow this operation. If the knee is also hot, or you have a temperature, do not wait for a call back.

For swelling in a knee that has not been operated on, or that has come back long afterwards, see swollen knee.

If the scope was for a worn knee and it still hurts

A large share of knee arthroscopies are done on an older, arthritic knee for a meniscal tear that built up slowly rather than tore in one moment. If that was you, and you are three months out and quietly disappointed, you are owed a straight paragraph rather than silence.

A BMJ guideline panel reviewed this question and made a strong recommendation against arthroscopic surgery in nearly all people with degenerative knee disease, whether or not the knee clicks or catches, and named a knee that cannot objectively be straightened as the only possible exception. The panel found that most people get an important improvement in pain and function without the operation, and that in fewer than 15 percent of the people in the trials the surgery produced a small or very small improvement in pain or function at three months, which was not sustained at one year (Siemieniuk and colleagues, 2017).

Two things follow from that, and neither of them is deflating.

The first is that a knee which still aches after a scope for wear is a common outcome, not a sign that something went wrong or that you did your exercises badly. There is one pattern that paragraph is not about, so read it before you file the whole thing under normal: pain that is getting worse month by month rather than staying the same, or pain at night or at rest that keeps building, is on the warning list at the foot of this page and goes to a doctor rather than into the pile of things that are simply taking a long time. That is true whether or not the knee was arthritic to start with.

The second is that the treatment with the better evidence behind it is still available to you, and it is strength. The program on this page will get you moving again, and then the longer-term work belongs on knee osteoarthritis, which is built for a worn knee rather than for a healing one. If the pain sits at the front, around or behind the kneecap, rather than along the joint line, patellofemoral pain is the better fit.

One qualification, so this is not read too widely. The panel said plainly that it did not look at younger people with sports injuries or at anyone whose knee was badly injured in one event, and its definition excludes a knee whose symptoms began after a major injury with the joint swelling up (Siemieniuk and colleagues, 2017). If your knee was wrecked in a tackle or a fall, none of the paragraph above is about you.

How to use this program

Start where your surgical team says, not where this page starts, and if their list differs from ours, use theirs.

Before stage 1, settle two things. Whether you may put weight through the leg, and how much. And whether there is a limit on how far the knee may bend.

If there is one, ask one more question about it: does it apply to bending the knee at all, or only to bending it while you are standing on that leg, or to both? Those are three different instructions and they rule out different exercises, which is why you want the answer in those words and not just as a number of degrees. Those two answers decide which parts of this program are yours this week, they come from your surgeon, and they are the reason the stages below are written around them rather than around dates.

Four answers do most of the gating below, so settle which of them are true of you before you start. Were you given a brace. Were you given a cap on how far the knee may bend. Was the meniscus stitched. Was the joint surface repaired.

If any one of those is a yes, the exercises that bend the knee under your own body weight, and the one stretch that takes the bend to its limit, all wait until your surgeon or physical therapist has cleared that exercise by name. On this page that means the sit to stand, the chair squat and the standing quad stretch in stage 2, and the step up, the supported single leg squat and single leg stance in stage 3. Nothing else in the program is held by those four answers, so a yes does not put the whole thing out of reach.

If you have had knee surgery of any kind, a repair, a reconstruction, a cartilage trim or a replacement, your surgeon's or hospital team's own instructions come first, including where they differ from anything on this page. Anything new in an operated knee goes to that team, not to a web page. New pain, swelling, heat or giving way in a knee that has been operated on is a same-day call to them, for the same reason the warning list sends a hot, red and swollen knee for advice the same day: an infection, or a problem with the repair or the implant, has to be ruled out before anyone treats it as a strain.

Move up a stage when the current one feels easy and the knee is no worse the next morning, not when the calendar says so. Moving up is not adding a whole stage on top of the last one. Keep the straightening work from stage 1, which stays worth doing for months, and let the rest of stage 1 go as the new exercises take its place, so the total the leg does in a day does not keep climbing every time you progress.

Mild discomfort during the exercises is usually fine if it eases soon after you stop. More pain or more swelling the next day means the amount was too much, so drop back a step rather than stopping altogether, and OrthoInfo's own guide says the same thing in fewer words: if an activity brings on swelling or pain, limit or stop that activity until you feel better. It adds one line that is easy to read past, so it is repeated here: contact your surgeon if the symptoms carry on.

Check with your doctor before you start if you have a heart or lung condition, or blood pressure that is not under control. Breathe steadily through every hold and never hold your breath.

If you have fallen in the past year, feel unsteady on your feet, or take medicines that make you dizzy, keep a hand on a kitchen counter through every standing exercise, practice only when someone else is at home, and ask your doctor or physio about a falls check before the single leg work in stage 3.

If you live alone, that rule still stands, so plan around it rather than ignoring it. Do the exercises that ask for someone to be at home at your physio appointments instead, keep to the seated and supported work when you are on your own, and ask your physio which of the one-leg exercises you may do alone. Keep your phone in a pocket rather than in another room, so you can reach it from the floor, and ask about an alarm you wear. If you do fall and cannot get up, or you think you may have hurt your head, neck, back or hip, stay where you are, keep warm and call emergency services, or get someone to call for you. Do not let anyone haul you up first.

If you are pregnant, or you have given birth in the last few months, check with your midwife or physio before you start, and plan the program with your physio and your maternity team.

Two exercises are deliberately missing, so here is why. There is no wall sit and no squat hold anywhere below. Both are loaded knee bending held still, which is the movement a meniscus repair protocol restricts, and neither is a starting point for an operated knee until your surgeon or physical therapist has cleared that exercise by name. Your physio may well add one later.

Read the warning signs at the end of this page before you begin. The ones to know while you are working through the stages: a knee that swells fast and feels tight, a wound that leaks or a temperature, a calf that becomes swollen or tender, a knee that locks, catches or gives way after an operation on the meniscus, and a leg you had been standing on that will not take your weight any more. Sudden severe pain in the lower leg with a tight bandage on it is the one that means emergency services rather than a phone call.

The exercise program

The exercises below carry their own stop signs and precautions. Open the line under an exercise and read them before you try it.

What to change for a few weeks

Turning is easier to plan around than to avoid. Move your feet to turn instead of pivoting on the operated leg, get out of a car by swinging your whole body round on the seat and putting both feet down together, and bring low jobs up onto a table instead of dropping into a deep squat.

Sitting still is the other thing to manage, for two reasons. Long spells with the knee bent and down make it stiffer and more swollen, and long spells of not moving at all are one of the things that raises the risk of a clot in the leg, which is why the warning list on this page carries that line. Get up and walk about regularly, and keep the ankle moving while you are sitting.

Kneeling is the one to ask about rather than to test. So is any twisting sport. After a meniscus repair or cartilage work those are months away and they come back on your surgeon's timetable, not on how the knee feels on a good day.

When to contact your surgical team

The same day, for a wound that is leaking or opening, a temperature, a knee that becomes hot and red, a knee that swells fast and tightens, a calf that becomes swollen or tender, or a knee that locks, catches or gives way after a meniscus operation. Those are written out in full in the warning signs below, and none of them is a wait-and-see.

In the next few days, for pain that has not begun to improve, movement that is going backwards rather than forwards, a numb patch near the scars, or anything in your own plan that you cannot yet do. OrthoInfo says to talk to your doctor if the pain has not started improving within a few days of the operation, and that is a sentence to act on, not to read past. It sits in OrthoInfo's paragraph about painkillers, where the instruction is to come off them as the pain settles, so the practical test is the direction of travel in what you are taking: a knee still needing the same amount a week later, or more, has not started improving.

Movement that is going backwards has a page of its own, knee stiffness after surgery, and that page is best read while the range is still recent, not after a few months of waiting. Pain at night or at rest that keeps building, instead of easing off week by week, belongs in the same few days. But pain that is actively getting worse, or pain with swelling, heat, redness or a temperature, is in the same-day list above and not in this one.

And ask your physio for a reassessment if progress has flattened for more than two or three weeks, or if you have reached a stage and cannot meet what it asks. A recovery that stalls usually stalls for a findable reason, most often a knee that is not fully straightening or a thigh that is not switching on, and both are easier to fix early.

For physiotherapists

The page's organising decision is to branch on procedure before anything else. Patients arrive knowing the name of their operation, usually from a discharge summary, and the four commonest ones through a knee arthroscope (partial meniscectomy, debridement, chondroplasty and meniscus repair) do not share a weight-bearing rule, yet most patient information written on this subject gives a single recovery for all of them. The staging itself follows the AAOS OrthoInfo knee arthroscopy exercise guide's three-phase structure, with its own dose (20 to 30 minutes, 2 or 3 times daily, roughly 5 second holds, around 10 repetitions) and its explicit ceiling of no partial squat below 90 degrees carried into stage 2. Its ankle weight progression, 1 pound up to a maximum of 5 pounds over 4 weeks, or about 0.5 kg up to about 2.3 kg, is not on the patient page and is noted here so its absence is a choice: our library's straight leg raise and terminal knee extension pages are not written with a weighted progression, and adding one would mean prescribing load without any procedure-specific permission to do so.

No weight bearing percentage, crutch duration or flexion cap appears anywhere on the page, for any procedure. The sourcing for that omission is deliberate and is stated to the reader rather than hidden: O'Donnell and colleagues (2017) found 17 treatment groups across 15 studies falling into accelerated, motion-restricted, weight-restricted and dual-restricted categories with comparable clinical success and no consensus on parameters; Fried and colleagues (2021) reported central tendencies across 88 studies with wide spread and poorly reported return criteria, and its week figures are withheld here under the same ruling that removed them from our meniscus return-to-sport page; Cong and colleagues (2024) found no consensus among AOSSM respondents, restriction stratified by hoop integrity, and most respondents bracing the knee. That survey's median weight bearing, range of motion and bracing figures are deliberately absent from this page in both the patient text and this section, because a median read as a permission is the hazard on a page whose reader may be under a tighter protocol. The page states the direction of the error explicitly, that a reader whose instruction is stricter keeps her own.

The one timeline figure given per procedure comes from OrthoInfo's Meniscus Tears page, which separates partial meniscectomy (approximately 3 to 6 weeks, typically immediate weight bearing and early full range) from meniscus repair (about 3 to 6 months). The meniscectomy figure is a permission, so it is paired in the same section with the instruction to follow a stricter personal protocol.

OrthoInfo's other figure, return to most physical activities after 6 to 8 weeks or sometimes much sooner, is conditional in its own text on the reader not having had a ligament reconstruction, a meniscus repair or cartilage restoration, and the page now carries that condition in both places it quotes the figure. On a page whose organising decision is to branch on procedure, quoting that range without its exception would have handed the repair reader the meniscectomy timeline in the section written to stop exactly that. Cleveland Clinic gives the same range without the exception, and is cited as doing so rather than as corroborating it. Cartilage procedures take the restriction direction from OrthoInfo's Articular Cartilage Restoration page (protection of the repaired surface, possible non-weight-bearing, crutches for the first few weeks or longer by procedure and lesion site, months before strenuous activity), and the page does not attempt a staged cartilage program at all.

Driving is handled as a spread rather than a figure. NHS (emergency stop achievable, usually at least 2 weeks, no driving after general anaesthesia) and OrthoInfo (1 to 3 weeks for a minor procedure) sit at the permissive end; Palma and colleagues (2021) recommend 6 weeks after knee arthroscopy from pooled brake reaction time. The page states the Palma figure with its population, traced through the review's own extraction tables: 8 studies and 436 patients, of which 5 are knee studies and 4 of those are ACL reconstruction, pooled without separating procedure, most pooled analyses graded low or very low certainty, and the review's limitations section stating that the effect of ACL reconstruction on braking may not be comparable to that of a meniscus repair or a diagnostic arthroscopy. It is therefore reported as not transferable to a simple scope rather than adopted as our number.

The on-population study does exist and is now on the page. Hau and colleagues (2000) is the single knee study in that meta-analysis covering partial meniscectomy, chondroplasty and diagnostic arthroscopy: 30 operated right knees against 25 controls, braking 736 ms before, 920 ms at 1 week and 685 ms at 4 weeks, concluding at least 1 week with the date set by two clinical tests rather than by the week. It is reported for its direction and not adopted as a figure, because 1 week is the permissive end of the whole spread, it is a 30 patient study from 2000 graded low certainty by the review that pooled it, and the braking at that 1 week mark was still slower than the person's own baseline. That matters for the reader whose own instruction is tighter, which is the direction the page is built to protect: the NHS at least 2 weeks and the functional emergency stop test plus the reader's own team and insurer carry the recommendation.

Hau's full text is not readable here, and the battery was run before saying so: Crossref on the DOI, Unpaywall (closed, no open copy), Europe PMC (not held), NCBI efetch, the publisher with a browser user agent, and two Internet Archive snapshots, all of which return the abstract and a subscription notice. So nothing is taken from it beyond the abstract and the review's own extraction tables, and an earlier line here claiming that the type of procedure made no difference to the change in reaction time has been removed as unreadable rather than left standing. The correlation the abstract does report, between the two clinical tests the authors used and braking time, which the review records as sit-to-stand testing, is the reason this page keeps a functional test rather than a date.

Its 4 week figure, 685 ms against a pre-operative 736 ms, is deliberately absent from the patient text and recorded only here. Three reasons.

The comparison is to a baseline already slowed by the knee that needed operating on, so faster than before is not the same as safe. The spread swallows the difference: 736 plus or minus 191 before against 685 plus or minus 174 at 4 weeks, from table 5 of the review. And the control group in the same study braked at 582 ms at that point, so the operated knees were still slower than people who had not had an operation, which is the comparison the patient text now carries instead. On a patient page the faster-than-before sentence works as permission to drive sooner, against the NHS floor and against the clinical test that Hau's own conclusion rests on.

The degenerative section cites Siemieniuk and colleagues (2017) for the strong recommendation against arthroscopy in degenerative knee disease, the three-month onset and non-persistence of benefit at one year, and the single possible exception of objectively absent extension. Its exclusions are stated on the page as well as its conclusion, so a younger post-traumatic reader does not read a recommendation written about worn knees as a statement about her own. Rice and McNair (2010) supports the effusion to quadriceps inhibition link, which is the mechanism behind the stage 1 sequencing and behind the swelling section's argument for managing rather than waiting out an effusion.

Wall sits and squat holds are excluded from the program by design and the exclusion is stated to the reader, because loaded sustained knee flexion is the movement a repair protocol restricts and our library's wall sit page is written for an unoperated knee. The standing quad stretch stays, gated on any flexion cap and on a meniscus repair, since it is the only stage 2 exercise taken to end-range flexion: it is where the OrthoInfo guide itself puts the standing quadriceps stretch, in its intermediate program, and the exercise page carries its own post-operative gate, so the reader of this page meets that gate as well as the stage text. The stationary bike in the guide's advanced program has no counterpart here because the library has no cycling page, which is noted so its absence reads as a gap in the library rather than a clinical choice.

Three further points settled in review rather than left open. No statement is made that a chondroplasty or a debridement carries no weight-bearing restriction: OrthoInfo's immediate weight bearing figure is specific to partial meniscectomy, no readable source gives a rule for the other two, and Anderson and colleagues (2017) describes chondroplasty as a spectrum from radiofrequency to abrasion to mechanical debridement with no standard of care, so the group is not homogeneous enough to carry a blanket permission. O'Donnell's conclusion that early motion and immediate weight bearing showed no detrimental effect is deliberately not on the patient page, because on a patient page it reads as permission to work outside a protocol, and the page's rule is that the reader's own instruction wins. And there is no intermediate stage for partial weight bearing: a reader on a partial limit stays in stage 1 and is sent to her own physio for the work in between, because the load through a standing exercise cannot be metered from a page, which is stated to the reader rather than left as a silent gap.

Stage 3 contains no pivoting, hopping, landing or kneeling at all, and names those five movement classes as surgeon-cleared rather than stage-gated. The step up, the supported single leg squat and single leg stance are now named alongside them for the repair and cartilage reader, because single limb loaded flexion is the load those two procedures are protected from and it is a later permission than gait. Stage 2 separates the two permissions it had been treating as one: the sit to stand and the chair squat are loaded knee flexion, so a brace, any flexion cap, a meniscus repair or cartilage work holds those two by name even when full weight bearing has been allowed, since a repair reader braced in extension can satisfy a full weight bearing gate while loaded flexion is still restricted. The flexion cap question put to the reader before stage 1 is now asked in its three forms, because a cap on weight-bearing flexion, a cap on flexion of any kind and both together rule out different exercises and a figure in degrees does not say which was meant.

On the chondroplasty and debridement weight bearing question, no permission is stated and none can be, but the mechanism is, because it is what tells the reader what to ask. Load is restricted when tissue inside the joint has to heal under it, and resection leaves nothing to knit, which is why this group is most often allowed onto the leg early; the page says that and then hands the decision back, with OrthoInfo's own two sentences, that weight bearing status is dictated by what was performed and that a question about bearing weight is a call to the surgeon.

The stiffness ladder, manipulation and arthroscopic or open release, is deliberately not on this page and is signposted to our knee stiffness after surgery page in two places, in the recovery section and in the contact section, with the reason for the split stated: the modal reader here had a resection and will regain range with the program, while the surgical end of stiffness needs the timetable, the risk profile and the loss of gained range that the other page carries. The signpost is the load-bearing part of that split, since a split without it is an omission.

Wound care, early thromboprophylaxis adherence and portal bleeding are stated in the first 48 hours section, sourced to OrthoInfo (clean and dry, surgeon decides showering and bathing, aspirin may be prescribed) and Cleveland Clinic (bleeding from the incisions heads its call-the-provider list). Hamstring sets keep the generic knee clearance gate: the hamstrings load the posteromedial corner and the posterior horn attachments, the exercise is prescribed in stage 1 before the first post-operative review, and the reader may be in the repair or cartilage group, so the gate is doing work rather than being tidy. The ankle pumps, calf raises and supine hamstring stretch exclusions stand, and calf raises in fact renders its own post-operative leg surgery gate as well.

Read as the patient uses it, the page then needed its self-classification load cut and three dose figures capped. Four facts drive almost every gate here (a brace, a flexion cap, a stitched meniscus, a repaired joint surface), and they were stated one at a time inside three long stage paragraphs, which is a lot of sorting for a reader a week after an operation, so they are now also asked together once before the program with the exercises they hold named in one list.

The dose arithmetic found three things a single figure does not show. The sit to stand and the chair squat are one movement under two names, which the page says in its own words and then prescribed twice, so at the stage ceilings the reader was doing 36 plus 30 loaded knee bends in a day where either exercise page intends 36 or 30 as the whole dose of that movement; the page now asks for one of the two in a session. The stage 2 repetition figure read onto the standing quad stretch, which is a 20 to 30 second hold taken 2 or 3 times on each leg and not 8 to 12 repetitions of end-range flexion. Stage 3's one-leg figure gave single leg stance up to 30 lifts a leg against its own page's 5 to 10, so that exercise is now dosed separately. The seat-height progression had no floor under it while the same paragraph carried OrthoInfo's no-lower-than-a-right-angle ceiling, which is rule 10 in a progression rather than in a figure, so the page now says where the lowering stops and names an ordinary dining chair as the landmark.

Nothing said whether a stage replaces the one below it or stacks on top of it, so the total was unbounded at every progression, and the page now says the straightening work carries forward and the rest gives way. Two gates were narrower than their siblings for no stated reason and are widened to match: the standing quad stretch was held for a flexion cap or a meniscus repair but not for a brace or cartilage work, and stage 3's step up and single leg pair were held for a repair or cartilage work but not for a brace or a cap, so a reader capped in flexion without a repair could reach single limb loaded flexion ungated. Stage 1 told every reader to wait for clearance while the first 48 hours section told her to move the ankle and the ankle pump page carries no knee gate by design, which is three permissions for one movement, so stage 1 now names the ankle movement as the part that does not wait and holds the other five.

The reader who cannot reach her team, whom the page's whole opening depends on, is given the switchboard and the discharging ward rather than a clinic appointment, and told what needs no permission while she waits. LIVE-ALONE-ROUTE and the FALL-CANNOT-GET-UP body sentence are added byte for byte from the house record, because the page tells a faller to practice only when someone else is at home and offered her nothing if she lives by herself, and the pregnancy line now also reaches a reader who gave birth in the last few months.

Five further points settled on the second reading, recorded so the reasoning stays with the words. Healthdirect's months or years figure for a stiff knee sits in its complications list and not in its recovery section, next to severe pain, loss of use and sometimes permanent pain and stiffness, so the page now gives it as a complication and routes that knee to the surgical team instead of offering it as the slow end of normal. The stage doses are capped at the lowest figure any prescribed exercise page carries, which puts stage 2 at 1 to 3 sets of 8 to 12 once a day with the sit to stand lower at 5 to 10, and stage 3 at 2 to 3 sets of 6 to 10, because a stage figure multiplies across six exercises and stage 2 had no frequency of its own to stop it inheriting stage 1's 2 or 3 sessions a day.

The per-exercise gates were completed: straight leg raise, sit to stand, chair squat and hamstring sets reach this reader through the program, and each named hip surgery or nothing where the knee line was the one she needed, so KNEE-CHECK was added to all four. Two true reassurances were closed as routes away from the extensor mechanism warning, the quadriceps inhibition paragraph and the stage 1 instruction to swap a difficult straight leg raise for quad sets, both of which now name a leg that could be lifted straight and suddenly cannot. And a third swelling pattern was added, swelling that never arrives fast but stops shrinking or slowly grows, which fell between the fast same-day line and the reassurance that ordinary swelling shrinks week by week.

Common questions

References

1. American Academy of Orthopaedic Surgeons. Knee Arthroscopy. OrthoInfo. https://www.orthoinfo.org/en/treatment/knee-arthroscopy/
2. American Academy of Orthopaedic Surgeons. Knee Arthroscopy Exercise Guide. OrthoInfo. https://www.orthoinfo.org/en/recovery/knee-arthroscopy-exercise-guide/
3. American Academy of Orthopaedic Surgeons. Meniscus Tears. OrthoInfo. https://www.orthoinfo.org/en/diseases--conditions/meniscus-tears/
4. American Academy of Orthopaedic Surgeons. Articular Cartilage Restoration. OrthoInfo. https://www.orthoinfo.org/en/treatment/articular-cartilage-restoration/
5. NHS. Arthroscopy. https://www.nhs.uk/tests-and-treatments/arthroscopy/
6. NHS. DVT (deep vein thrombosis). Page last reviewed 30 April 2026. https://www.nhs.uk/conditions/deep-vein-thrombosis-dvt/
7. Healthdirect Australia. Arthroscopy of the knee. https://www.healthdirect.gov.au/surgery/arthroscopy-of-the-knee
8. Cleveland Clinic. Knee Arthroscopy. https://my.clevelandclinic.org/health/treatments/17153-knee-arthroscopy
9. O'Donnell K, Freedman KB, Tjoumakaris FP. Rehabilitation protocols after isolated meniscal repair: a systematic review. American Journal of Sports Medicine. 2017;45(7):1687-1697. https://doi.org/10.1177/0363546516667578
10. Fried JW, Manjunath AK, Hurley ET, Jazrawi LM, Strauss EJ, Campbell KA. Return-to-play and rehabilitation protocols following isolated meniscal repair: a systematic review. Arthroscopy, Sports Medicine, and Rehabilitation. 2021;3(1):e241-e247. https://doi.org/10.1016/j.asmr.2020.07.023
11. Cong T, Reddy RP, Hall AJ, Ernazarov A, Gladstone J. Current practices for rehabilitation after meniscus repair: a survey of members of the American Orthopaedic Society for Sports Medicine. Orthopaedic Journal of Sports Medicine. 2024;12(2):23259671231226134. https://doi.org/10.1177/23259671231226134
12. Siemieniuk RAC, Harris IA, Agoritsas T, et al. Arthroscopic surgery for degenerative knee arthritis and meniscal tears: a clinical practice guideline. BMJ. 2017;357:j1982. https://doi.org/10.1136/bmj.j1982
13. Palma S, Giannoudis V, Patel P, Palan J, Guy S, Pandit H, Van Duren B. Patients generally may return to driving 4 weeks after hip arthroscopy and 6 weeks after knee arthroscopy: a systematic review and meta-analysis. Arthroscopy, Sports Medicine, and Rehabilitation. 2021;3(6):e2067-e2092. https://doi.org/10.1016/j.asmr.2021.08.015
14. Hau R, Csongvay S, Bartlett J. Driving reaction time after right knee arthroscopy. Knee Surgery, Sports Traumatology, Arthroscopy. 2000;8(2):89-92. https://doi.org/10.1007/s001670050192
15. Rice DA, McNair PJ. Quadriceps arthrogenic muscle inhibition: neural mechanisms and treatment perspectives. Seminars in Arthritis and Rheumatism. 2010;40(3):250-266. https://doi.org/10.1016/j.semarthrit.2009.10.001
16. Anderson DE, Rose MB, Wille AJ, Wiedrick J, Crawford DC. Arthroscopic mechanical chondroplasty of the knee is beneficial for treatment of focal cartilage lesions in the absence of concurrent pathology. Orthopaedic Journal of Sports Medicine. 2017;5(5):2325967117707213. https://doi.org/10.1177/2325967117707213

Written and checked by the PocketPhysio editorial team. Last updated 2026-11-02.

This page is general education, not a diagnosis or a personal treatment plan. See a physiotherapist or doctor for advice about your own situation.