MOVESCI 230 Lecture 6: Elbow, Wrist and Hand

• School: U of M
• Department: Movement Science
• Course: MOVESCI 230
• Professor: Melissa Gross

Document Summary

Lecture 6: bones of upper limb, upper arm (brachium) Distal row (4: metacarpals (5, phalanges (14) Distal: carpal bones form arch when articulated, scaphoid boat shaped, lunate crescent moon, triquetrum triangular, pisiform p shape, trapezium articulates with thumb, trapezoid, capitate middle finger. Radial collateral ligament: articulation between proximal ulna and radius forms pivot (pro/supinate) Synovial joint between radial notch on ulna and head of radius. Supinated (bones parallel) in anatomical: ligaments reinforce synovial joints of elbow joint complex. Annular ligament ring of fibrous tissue around radius head: wrist joint complex allows flexion/extension and radial/ulnar deviation, radiocarpal joint. Lies between radius and scaphoid, lunate, triquetral. Enables 40% of wrist motion: intercarpal joints. 3: carpometacarpal joints synovial but mobility differs between thumbs/fingers, fingers. Very mobile: opposition of thumb move thumb away from plane of fingers, metacarpophalangeal joints synovial but mobility differs between thumb/fingers, fingers. Interphalangeal joints synovial hinge joints allow flexion/extension: fingers. Distal interphalangeal joints (dip) middle and distal phalanges.