13 - finger movements Flashcards
interphalangeal joints
bicondylar
matecarpophalangeal joints
larger plamar plate
digit 1 - bicndylar = uniaxial
digits 2-5 - condylar = biaxial
digit 1 carpometacarpal joint
saddle joint
digits 2 and 3 carpometacarpal joints
interlcking facets - fixed and strong
digits 4 and 5 carpometacarpal joints
flattened faucets - more flexible than 2 and 3
effect of planar shape on movement
small movements in any direction
type of joint of intercarpal joints
interlocking planar
abduct
take away from the midline
adduct
brng back to the midline
flexor digitorum profundus goes through
flexor digitorum superficialis
palmaris longus
inserts into base of proximal phalanx
tandon fans out to form the palmar aponeurosis
flexor digitorum superficialise inserts intp
middle phalanx
flexor digitorum profundus
passes through gap in FDS tendon
inserts into distal phalanx
lumbricals
originate from FDP tendon, insert into extensor expansion
palmar interssei
adductors