the hand and wrist Flashcards
describe the articulation of wrist?
distal end of radius and articular disc of distal radio-ulnar joint articulate with proximal row of carpal bones (except pisiform)
name the bones in the carpus
some lovers try positions that they cant handle
scaphoid lunate triquetrum pisiform trapezium trapezoid capitate hamate
what makes the carpal tunnel?
carpal bones (posteriorly) and flexor retinaculum (anteriorly)
what nerve is compressed in carpal tunnel syndrome?
median nerve
why is the palmar cutaneous branch of median nerve not affected in carpal tunnel syndrome?
because it branches off proximal to the tunnel and travels superficially to reach skin of palm
name 2 tests you can do for carpal tunnel syndrome?
Tinel’s test
Phalen’s test
name the joints in the hand?
carpometatarsal
metacarpophalangeal
prox and dist interphalangeal
what are the fatty pad bits on the hand called?
`thenar and hypothenar eminence
what is dupuytren’s contracture?
progressive, shortening, thickening and fibrosis of palmar fascia
name the 3 nerves which innervate the hand (sensory)?
radial nerve
ulnar nerve
median nerve
on the palmar aspect of the hand, what nerve innervates the skin over the base of thumb?
radial nerve
on the palmar aspect of the hand, what nerve innervates the central/lateral palm, half of the ring finger, the thumb, index and middle finger?
median nerve
on the palmar aspect of the hand, what nerve innervates the medial part of palm, the little finger and the medial half of ring finger?
ulnar nerve
on the dorsal aspect of the palm, what nerve innervates the skin over anatomical snuff box, lateral dorsum of hand and prox index and middle fingers?
radial nerve
on the dorsal aspect of the palm, what nerve innervates the skin over distal phalanges and nail beds of the thumb, index, middle finger?
median nerve
