week 3 sem 2 Flashcards
list the carpals
She Looks Too Pretty Try To Catch Her
scaphoid
lunate
triquetrum
pisiform
trapezium ( near the thumb)
trapezoid
capitate
hamate
pisiform can only be seen
anteriorly
hook of hammate can only be seen
anteriorly
radiocarpal joint classification
synovial biaxial ellipsoid
radiocarpal joint articular surfaces
distal end of radius
distal radioulnar joint articular disc
proximal row of carpals (not pisiform)
radiocarpal joint- triangluar fibrocartliage complex
complex of ligaments and catliage
- distal radioulnar joint articular disc
- ligaments
functions:
- stabilise distal radioulnar joint
- transmitt and distrubute load form carpals to ulna
- helps to facilitate complex wrist movment
palmer radiocarpal ligament where and funtion
from radius to carpal bones anteriorly
limits extension of the hand
ensures that the hand moves with the forearm during pronation and supernation
dorsal radiocarpal ligament where and funtion
from radius to carpal bones on posteior side of hand
funtion
-ensures that the hand moves with the forearm during pronation and supernation
radial collateral ligament where and funtion
from styloid process of radius to scaphoid and trapezium
funtion
- limit adduction of the hand
ulnar collateral ligament where and funtion
from styloid process of ulnar to triqueetrum and pisiform
funtion
- limits abduction of the hand
midcarpal joint classification
synovial compound joint
midcarpal joint articular surfaces
proximal row of carpals
disatal row of carpals
palmer ntercarpal ligaments
converges onto capitatae
funtion= limit extension of the hand
dosal intercarpal ligament
limits flexion of the hand
major contributions to movement by joints
flexion: midcarpal
extension: radiocarpal
abduction: radiocarpal
adduction: midcarpal
intercarpal joints classification
synovial multiaxial plane
allow small gliding movments
scapholunate ligament
function is to prevent the schapoid and the lunate bone from dislocating
carpometacarpal joint of the thumb classification
synoival biaxial saddle
does flexion, extension ABD ADD circumduction and opposition. these occur in oposite planes and opposite axis
carpometacarpal joint of the thumb articular surfacd
trapezium & base of 1st metatrsal
carpometacarpal joint of the digits 2-5 classification
synovial, multiaxial, plane
palmer carpometacarpal ligament
from distal row of carpal bones to bases of metacarpals 2-5 on anterior side
dorsal carpometacarpal ligament
from distal row of carpal bones to bases of metacarpals 2-5 on posterior side
metacarpophalangeal joint classification
synovial biaxial condyloid
metacarpophanlangeal ligaments
thinkening of articular sides
funtion:
- limit flexion of digit
- prevent abduction and adduction of digits in flexion
palmar ligaments (plates)
fibrocartligionus plates
form part of articular surfaces
grooved for long flexor tendon
limit extension of digits
deep transverse metacarpal ligaments
connect palmar ligaments of MCP joints 2-5 (keep heads together)
interphalangeal joints
synovial uniaxial hinge
IP joint collatersl ligaments
thickening of articular capsule and function to limit flexion of digit
IP joint palmer plates
limit extension of digits