HN210 Study Guide - Midterm Guide: Shoulder Joint, Radial Nerve, Articular Disk
Document Summary
Proximal row (lateral to medial: scaphoid: boat shaped, lunate: moon shaped, triquetrum: pyramidal shape, pisiform: pea shaped (super small, on palmar surface of triquetrum) Distal row (lateral to medial: trapezium: 4 sided, trapezoid: wedge shaped, capitate: largest carpal, hamate: wedge, like a hook. Some lovers try positions that they can"t handle. Clavicle is commonly fractured, often by indirect force transmitted from outstretched hands through bones of the forearm & arm during a fall. Weakest part of clavicle lateral + middle 1/3. After fracture of clavicle, the scm elevates the medial fragment on bone. Clavicle is the first long bone to ossify. Last to fuse (at around 25-31 dress) Sometimes, fusion of the 2 ossification centers of the clavicle fails to occur, as a result" a bony defect forms between the lateral & medial 1/3"s of clavicle: defect is usually bilateral. Fractures of surgical neck of the humerus are common in old people with osteoporosis.
