functional anatomy of the hand Flashcards
where is the proximal crease on wrist?
btwn distal radius and proximal row of carpel bones
where is the distal crease on wrist?
btwn distal row of carpels and base of metacarpals
where is the proximal crease of thumb
metacarpophalangeal joint
where is the distal crease of thumb
interphalangeal joint
where is the proximal digital crease
MP joint or proximal knuckle
where is the proximal IP crease
PIP joint or middle knuckle
where is the distal IP crease
DIP joint or distal knuckle
what is the ulnar bursa
digital synovial sheath of 5th digit w/ common synovial sheath of all 4 fingers
what is the radial bursa
base of distal phalnax of thumb to proximal to flexor retinaculum
where does the radial nerve provide sensory innervation to?
dorsum of hand and thumb
where does the median nerve provide sensory innervation to
palmar surface of first 3.5 digits (starting at thumb)
where does the superficial ulnar nerve provide sensory innervation to
medial 1.5 digits and ulnar portion of hand
what forms the superficial palmar arch?
what structures does it supply?
- larger contribution from ulnar
- radial
- skin and superficial structures
what forms the deep palmar arch?
what strucutures does it supply?
- larger contribution from radial
- ulnar
- most intrinsic muscles
