MEDRADSC 2G03 Chapter Notes - Chapter 4: Photostimulated Luminescence, Scapula, Osteoarthritis
17 Sep 2016
School
Department
Course
Professor
Document Summary
The radius (shorter) is directly involved in the wrist joint (ulnar isn"t) During pronation, the radius crosses over the ulna near the upper third of the forearm. Humeral condyle: expanded distal end of the humerus, made up of the trochlea/capitulum. Lateral epicondyle: small projection on the lateral side of the distal humerus about capitulum epicondyle: larger, on medial edge of distal humerus. Anterior depressions of distal humerus: coronoid fossa, fossa. True lateral elbow: flexed at 90 degrees, has 3 arcs (trochlear sulcus, outer ridges of capitulum and trochlea) All joints of the upper limb are synovial and diarthrodial. Interphalangeal- ginglymus for flex/extend abduct/adduct, #2-5 are ellipsoid for flex/extend, abduct/adduct, Carpometacarpal- #1 is sellar (saddle) for flex/extend, adduct/abduct, circumduction, opposition, rotation, #2-5 are plane (gliding) which has the least movement. Only the radius articulates with scaphoid/lunate (radiocarpal joint) Wrist joint: articular surface of radius/articular disk/triquetrum, lunate, scaphoid. Enclosed by synovial capsule (movement in 4 directions+circumduct)
