ANAT20006 Lecture Notes - Lecture 14: Axial Skeleton, Surgical Neck Of The Humerus, Pentadactyl

• School: University of Melbourne
• Department: Anatomy and Neuroscience
• Course: ANAT20006
• Professor: Charles Sevigny

Document Summary

Osteophytes grow (bone grows) when bone rubs against bone. 1 proximal bone, 2 distal bones (one rotated) Condyles/articular surfaces- trochlea and capitulum (rounded at elbow joint) Fractures at surgical neck, midshaft, supracondylar can endanger. Linked by interosseous membrane (deep fascia which allows more sa for attach of muscles) Head and fovea (depression), ulnar notch, carpal articulation. Radial tuberosity (pokes out at neck) and styloid process. 8 carpal bones (short) in prox/dist rows of 4. Stable: congruent articular surfaces, tight capsule, strong ligaments. Most common dislocation is anterior and humerus drops inferiorly. Coracoacromial ligament (above)- attached to same bone so just stops dislocation of humerus. Long head of biceps (in front) holds humerus against glenoid. Pull humeral head to glenoid to compress it. Increase motion: helps length-tension relationship, stops muscle impingement. Between head of radius and radial notch of ulnar. Head of radius encircled by anular ligament. Between head of ulna and ulnar notch on distal radius.