Wrist and Hand Flashcards
Radius is ___ relative to the carpals
Biconcave
Ulna is ___ at its distal end relative to the triquetrum
Convex
Proximal aspect of proximal row is
Biconvex
Distal aspect of proximal row is
Concave
Metacarpal heads are ____
Biconvex
Phalanges’ proximal ends are mostly ___
Biconcave
Phalanges’ distal ends are mostly ___
Biconvex
Dorsal radiocarpal joint limits
flexion, pronation, and some radial deviation
Radiocarpal joint - articulation
Convex scaphoid and lunate articulate with concave radius
Carpometacarpal joint - articulation - First CMC is what
A saddle articulation
Trapezium convex in med/lat direction, concave in ant/post direction
Carpometacarpal joint - articulation - 2nd through 5th CMC
flat between bases of metacarpals and distal row of carpals
MCP joints - articulation
Convex metacarpals with concave proximal phalanges
PIP joints - articulation
Convex distal aspect of proximal phalanges with concave proximal aspect of middle phalanges
Wrist flexors
Flexor carpi radialis
Flexor carpi ulnaris
Palmaris longus
Flexor digitorum profundus
Wrist extensors
Extensor digitorum
Extensor carpi radialis longus
Extensor carpi radialis brevis
Extensor carpi ulnaris
Radial deviators
Flexor carpi radialis
Extensor carpi radialis longus and brevis
Ulnar deviators
Flexor carpi ulnaris
Flexor digitorum profundus
Extensor carpi ulnaris
Extrinsic finger flexors
Flexor digitorum superficialis - to PIP joint
Flexor digitorum profundus