Archive image from page 1481 of Cunningham's Text-book of anatomy (1914). Cunningham's Text-book of anatomy cunninghamstextb00cunn Year: 1914 ( 1448 SURFACE AND SURGICAL ANATOMY. vein, the medial cutaneous nerve of the forearm, and the superficial cubital lymph glands, two or three in number. Extending proximally from the lateral epicondyle to the insertion of the deltoid is the lateral intermuscular septum, which is pierced at the junction of its proximal and middle thirds by the radial nerve. Between the lateral intermuscular septum and the lateral edge of the biceps is the ill-defined late
Archive image from page 1481 of Cunningham's Text-book of anatomy (1914). Cunningham's Text-book of anatomy cunninghamstextb00cunn Year: 1914 ( 1448 SURFACE AND SURGICAL ANATOMY. vein, the medial cutaneous nerve of the forearm, and the superficial cubital lymph glands, two or three in number. Extending proximally from the lateral epicondyle to the insertion of the deltoid is the lateral intermuscular septum, which is pierced at the junction of its proximal and middle thirds by the radial nerve. Between the lateral intermuscular septum and the lateral edge of the biceps is the ill-defined lateral bicipital furrow, the floor of which is formed by a strip of the brachialis, and, nearer the elbow, by the brachio-radialis and extensor carpi radialis longus. The posterior compartment of the arm is occupied by the triceps, the long head of which can be traced proximally to the axillary margin of the scapula, in front of the posterior border of the deltoid and behind the posterior fold of the axilla. The lateral head of the triceps, after emerging from under cover of the distal part of the posterior border of the deltoid, is continued obliquely along the lateral aspect of the arm as a well-marked muscular elevation. Proximal to the olecranon is the strap-like tendon of insertion of the triceps, which, when the elbow is fully flexed, forms an admirable posterior splint in supracondylar fractures of the humerus. The brachial artery, slightly overlapped in the proximal half of the arm by the coraco-brachialis and in the distal half by the biceps, can be felt pulsating through- out the whole length of the anterior part of the medial bicipital furrow. The Head of radius Extensor carpi radialis brevis Lateral epicondyle Extensor carpi radialis longus Radial nerve Lateral intermuscular septum Biceps Axillary nerve Deep branch of radial nerve Abductor pollicis longus Middle thecal tubercle Styloid process of third metacarpal Head of ulna Infraspinatus Triceps tendon Lateral hea
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