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HUMERUS
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ad fits into glenoid cavity of the scapula --in anterior view, greater & lesser tubercles --(supraspinatus, infraspinatus, teres minor, &
pectoralis major attach to greater tubercle;
subscapularis attaches to lesser tubercle; latissimus dorsi to the intertubercular sulcus) --although the
anatomical neck of the humerus
lies between the head & tubercles, the surgical
neck (just distal to the tubercles) is important because it is so
frequently fractured --in the lateral
middle of the humerus is a roughened "V" of the deltoid tuberosity where deltoid inserts --medial & lateral epicondyles:
where many muscles that move the wrist & fingers originate --you can feel
both epicondyles; if you press the ulnar nerve just under the medial epicondyle,
you will feel your fingers tingle --trochlea articulates with trochlear notch of ulna; capitulum with the head of the radius (head wears a cap) --the olecranon fossa holds the olecranon
(elbow) when forearm is extended |
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