game keepers thumb

an injury to the medial collateral ligament of the thumb due to forcing the thumb into abduction; aka, skier's thumb

ulnar deviation

movement of the wrist towards the ulna

avascular necrosis

the death of body tissue from lack of blood


a grating or crackling sound or sensation, as that produced by the fractured ends of a bone moving against each other

non union

term for a fracture in a bone that does not heal in the proper position

jersey finger

an injury of the finger in which the flexor tendon tears from the fingertip

DeQuervain's tendonitis

swelling and tenderness of the tendons of the thumb extensors due to prolonged radial deviation


one of the carpal bones that has a blood supply only on one end

dislocation of the lunate

this type of injury occurs due to falling on a hand that is either in flexion or extension, the lunate carpal bone is dislocated

boutenierre deformity

hard impact at the PIP joint causes a tear in the joint capsule, allows the extensor tendons to fall laterally

wrist sprain

most often cause by forceful twisting of the wrist

radial deviation

movement of the wrist towards the radius


proximal interphalangeal joint

interphalangeal collateral ligament sprain

stressing a collateral ligament on the phalanges beyond normal ROM


the eight irregular bones of the wrist; scaphoid, lunate, triquestrum, pisiform, trapezium, trapezoid, capitate, hamate


carpometacarpal joint


distal interphalangeal joint

anatomical snuff box

a hollow surrounded by three tendons on the radial side of the back of the wrist when the thumb is fully extended

Finkelstein test

an orthopedic test to rule out injury to the thumb extensors

lateral epicondylitis

tennis elbow, caused by repetitive motions of the wrist and arm; pain occurs over the lateral epicondyle of the humerus

ulnar collateral ligament

the primary elbow stabilizer, stabilizing the inside of the arm and elbow joint

radial collateral ligament

stabilizes the outside wall of the joint capsule

annular ligaments

ligaments which hold the radius and ulna together at the elbow joint


upper, outer arm muscle performing elbow extension


upper, inner arm muscle performing elbow flexion

wrist flexors

attach to the medial epicondyle of the humerus and run toward the hand, performing flexion of the wrist

wrist extensors

attach the lateral epicondyle of the humerus and run toward the hand, performing extension of the wrist

medial epicondylitis

little league elbow, caused by repetitive throwing; pain occurs over the medial epicondyle of the humerus

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