. Operative surgery, for students and practitioners . rounded by the ligature, which is tied with a single squareknot. The Brachial Artery.—The linear guide to the brachial arteryis a line drawn from the coracoid process to a point upon the frontof the elbow, midway between the condyles, the arm being abductedto a right angle with the trunk. The muscular guide to the artery is LIGATIONS. 517 the inner edge of the mass of muscle, composed of the biceps andc orae o-bra chialis. The incision, two inches in length, is made along the inner bor-der of the coraco-brachialis, penetrating through the s
. Operative surgery, for students and practitioners . rounded by the ligature, which is tied with a single squareknot. The Brachial Artery.—The linear guide to the brachial arteryis a line drawn from the coracoid process to a point upon the frontof the elbow, midway between the condyles, the arm being abductedto a right angle with the trunk. The muscular guide to the artery is LIGATIONS. 517 the inner edge of the mass of muscle, composed of the biceps andc orae o-bra chialis. The incision, two inches in length, is made along the inner bor-der of the coraco-brachialis, penetrating through the skin and sub-cutaneous fat and exposing the deep fascia. At this stage, belowthe middle of the arm, the basilic vein, lying superficial to the deepfascia and to the inner side of the brachial artery, is met. In theupper part of the arm we would not encounter the basilic vein untilafter we had cut through the deep fascia. The deep fascia is now incised in a direction corresponding tothe skin incision, and the bundle of structures—which consists of. \ vw Fig. 224.—Right Arm. A, incision for ligation of axillary artery;B, incision for ligation of brachial artery. the artery, venae comites, and adjoining nerves and which is readilyfelt beneath the deep fascia—is exposed. In the middle of the arm we find the median nerve lying uponand crossing the artery from without inward; above the middle ofthe arm the median nerve lies close to the outer side of the artery;below the middle it lies along its inner side. The ulnar nerve is situ-ated upon the inner side of the artery, getting farther away from itas it descends toward the elbow-joint. The loose connective tissuethat surrounds the brachial artery may be now picked up with amouse-toothed forceps and nicked with the point of the knife;through the small opening thus made a director is introduced and 518 UPPER EXTREMITY. gradually worked around the artery, which is thus isolated from theadjoining structures, avoiding the venae com
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