Thumb opposition is a movement exercise where you touch the tip of your thumb to the tip of each finger in turn, making an O shape each time. With your elbow propped on a table and the hand upright, you work from the index finger across to the little finger. It is a common early exercise for getting the thumb and fingers moving again after a hand or wrist injury, or after time in a cast or splint.

How to do the thumb opposition

Sit at a table with the elbow of your working arm resting on it, forearm pointing up and the hand open in front of you. Your other hand can rest flat on the table.
Bring the tip of your thumb and the tip of your index finger together to make a round O shape.
Open the hand, then touch your thumb to the tip of your middle finger in the same way.
Do the same with your ring finger, then your little finger. The thumb has to reach farthest across the palm for the little finger.
Open the hand again. That is one round, so start again from the index finger.

What you should feel

Movement at the base of your thumb and in the fleshy pad of muscle below it. A stiff thumb may feel tight as it reaches toward the ring and little fingers.

Common mistakes

Pressing the finger pads flat together instead of touching tip to tip in a round O.
Lifting the elbow off the table or moving the whole arm.
Rushing through the fingers without making a full O each time.
Forcing the thumb across to the little finger when it does not reach yet.

How often

Many programs go through all four fingers 5 to 10 times, 2 to 3 times a day. Your physio will adjust this for you.

Stop and check with your physio if

Sharp pain in the joint at the base of the thumb, or in any finger joint.
Numbness or tingling in the thumb or fingers. If one side of your face or body suddenly goes numb or weak, or your speech becomes slurred or muddled, call emergency services, even if it goes away.
Thumb or finger joints that are more swollen or stiff afterward.
Emergency: while you are in a cast or splint, your fingers turn blue, white or pale, or feel cold. Do not wait to see if raising your hand helps. Go to an emergency department straight away, and do not drive yourself. The cast or splint may be cutting off the blood supply, or pressure may be building up inside the forearm (compartment syndrome), and both need checking quickly.
In a cast or splint, the pain gets worse, your fingers feel numb or tingle or look more swollen, or the cast feels too tight. Stop, raise your hand above your head, keep moving your fingers and contact your fracture clinic or get medical advice straight away. If you cannot move your fingers, the pain is severe even after painkillers, or the numbness, tingling or swelling has not settled within 30 minutes of raising your hand, go to your fracture clinic or an emergency department straight away, and do not drive yourself.
Since the fracture or cast, the hand is getting more painful rather than less, the skin becomes very sensitive to light touch, or the hand changes color, temperature, swelling or sweating compared with the other one, or looks shiny. See your doctor or physio as soon as you can, within a few days at most, as this can be complex regional pain syndrome (CRPS) and early treatment may help.
Suddenly being unable to straighten the end of your thumb or lift it back, especially in the weeks after a wrist fracture. A thumb tendon can snap, so have a doctor check it within a few days.

From the clinic

If your thumb cannot reach the ring or little finger yet, go as close as you comfortably can and keep the movement smooth. The touch itself is light. There is no need to pinch.

After a wrist fracture, keep moving your fingers and thumb as far as the cast or splint allows, unless your fracture clinic has told you otherwise. After a broken hand or finger, a tendon repair or other hand surgery, how far you may move the fingers and thumb is often limited for several weeks, so do only the movements your surgeon or hand therapist has shown you. With arthritis at the base of the thumb or rheumatoid arthritis, keep the touches gentle and ask your physio what suits you on days when the joints are flared. For more hand exercises, see tendon glides and finger spread with putty.

Written and checked by the PocketPhysio editorial team. Last updated 2026-09-28.

This page is general education, not a diagnosis or a personal treatment plan. If you have pain, an injury or a health condition, see a physiotherapist or doctor before starting new exercises.

Thumb opposition