Abductor pollicis brevis

Schematic anatomy
Abductor pollicis brevis

Arms

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Biceps

Long headShort headBrachialis · supporting muscle

Triceps

Long headLateral headMedial head

Forearms

BrachioradialisFlexor carpi radialisFlexor carpi ulnarisFlexor digitorum superficialisFlexor digitorum profundusFlexor pollicis longusExtensor carpi radialis longus & brevisExtensor carpi ulnarisExtensor digitorumExtensor pollicis longus & brevisAbductor pollicis longusPronator teresPronator quadratusSupinator

Hands

Abductor pollicis brevisFlexor pollicis brevisOpponens pollicisAdductor pollicisHypothenar musclesLumbricalsDorsal interosseiPalmar interossei
Movement guide

Abductor pollicis brevis

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Lifts the thumb away from the plane of the palm.

01

Thumb lift

Thumb abduction · Light band

Also works

Other thenar muscles stabilize the thumb

How to perform

With your palm facing up, lift your thumb away from the plane of the palm against light resistance.

Keep the thumb gently curved and the wrist supported.

Example volume · 1–2 sets × 8–12 reps

Referenceswww.guysandstthomas.nhs.uk

Community draft · awaiting expert review