which mm are responsible for supination?
what mm are responsible for pronation at the wrist?
what does an intrinsic mm mean?
arises from the hand
which mm is the "plate carrying muscle"?
which mm abduct the fingers?
which mm adduct the fingers?
what nerve passes through the carpal tunnel?
what type of injury is carpal tunnel syndrome?
repetitive trauma injury
-usually worse at night
what is the median nerve distribution?
thumb, index, 2nd, 3rd and half of 4th digit
what indicates a positive Tinel's sign?
tingling or electric sensation on percussion of the palmer aspect of where the wrist meets the hand
what is a positive Phalen's test?
numbness and tingling is felt when wrists are held in acute flexion for 60 seconds
what indicates a positive Grind test?
pain is felt when you apply pressure to thumb and internall and externally rotate the thumb
what does a positive Grind test indicate?
degenerative joint dz
what are Heberden's nodes?
nodules on dorsolateral aspects of the DIP
-due to bony overgrowth a/w OA
-usually hard and painless
-affect middle aged to elderly
what are Bouchard's nodes?
found on the PIP joints and are less common than Heberden's nodes
what are typically signs of RA?
tender, stiff joints of both hands
PIP, MCP and wrist joints but NOT DIP
spindle shape swelling of PIP
what are signs of chronic RA?
swelling and thickening of PIP and MCP
fingers deviate to ulnar side
interosseous muscle atrophy
swan neck deformities
what is a ganglion?
fluid filled sac that forms by irritation, usually non-tender located along tendon sheaths or joint capsules
-frequently found on dorsum of wrist
what is tenosynovitis?
inflammation of flexor tendon sheaths may follow local injury
-tenderness and swelling along course of flexor tendon distal phalynx to MCP w/o joint involvement
-early dx and treatment are important
what is a felon?
injury to finger tip that damages finger pad
-severe pain, local tenderness
-early dx is important
what is dupuytren's contracture?
skin puckers in the area of flexor tendon of the ring and maybe the little finger
-flexion of contracture may ensue
what is a trigger finger?
painless nodule in a flexor tendon in the palm near the head of the MC
-audible snap is present when nodule tries to move through tendon sheath (can't back the tendon out)
-watch and listen during flexion and extension and palpate for the nodule and the snap
what does thenar atrophy indicate?
carpal tunnel syndrome
what does hypothenar atrophy usually indicate?
ulnar nerve injury or neuropathy