elbow, forearm and wrist Flashcards
wrist joint: describe the anatomy of the wrist; demonstrate movements at the wrist joints and name and identify the muscle groups responsible for the movements, and explain their innervation; describe the relative positions of the tendons, vessels and nerves in the region of the wrist in relation to injuries
wrist joint type
elipsoid synovial joint between distal radius and associated triangular fibrocartilage articular disc (not ulna), with proximal row of carpal bones
6 strong ligaments stabilising wrist joints
ulnar collateral, radial collateral, palmar radio-carpal, palmar ulnocarpal, dorsal radio-carpal, inter-carpal
3 movements of wrist
flexion/extension, radial deviation (abduction) and ulnar deviation (adduction), circumduction
5 muscles involved in flexion of wrist joint and nerve spinal levels
flexor carpi radialis, flexor carpi ulnaris, long flexors of thumb and fingers, palmaris longus, abductor pollicis longus; C6,7
4 muscles involved in extension of wrist joint and nerve spinal levels
extensor carpi radialis longus, extensor carpi radialis brevis, extensor carpi ulnaris, long extensors of thumb and fingers; C6,7
5 muscles involved in radial deviation (abduction)
flexor carpi radialis, extensor carpi radialis longus, extensor carpi radialis brevis, abductor pollicis longus, extensor pollicus brevis
2 muscles involved in ulnar deviation (adduction)
extensor carpi ulnaris, flexor carpi ulnaris
which bone doesn’t directly articulate with carpal bones, and what is present instead
(distal end of) ulna; instead theres is an intervening fibrous articular disc articulating with the triquetrum carpal bone and styloid process of ulna
what happens during pronation to the fibrous articular disc
dragged over, so radius crosses over ulna
