A manual of operative surgery . FIG. 318.—LIGATURE OF RIGHTULNAR ARTEKY AT THE MIDDLETHIRD OF THE FOREARM. Deep Wound. — a, Fascia ; B,Flex, sublimis; C, FJex. carp,ulnaris ; D, Flex, profundus ; a,Artery; I, Ulnar nerve. 352 OPERATIONS ON ARTERIES [part V 2-- circulation is very readilyand freely established,through the cross anasto-moses between the arteriesin question, through thepalmar and carpal arches,and through the inter-osseous vessels. Varieties of the Radialand Ulnar Arteries. i. The radial has beenfound outside the fascia,and subcutaneous. 2. The ulnar may besubcutaneous or subfasc
A manual of operative surgery . FIG. 318.—LIGATURE OF RIGHTULNAR ARTEKY AT THE MIDDLETHIRD OF THE FOREARM. Deep Wound. — a, Fascia ; B,Flex, sublimis; C, FJex. carp,ulnaris ; D, Flex, profundus ; a,Artery; I, Ulnar nerve. 352 OPERATIONS ON ARTERIES [part V 2-- circulation is very readilyand freely established,through the cross anasto-moses between the arteriesin question, through thepalmar and carpal arches,and through the inter-osseous vessels. Varieties of the Radialand Ulnar Arteries. i. The radial has beenfound outside the fascia,and subcutaneous. 2. The ulnar may besubcutaneous or subfascialin its entire course. 3. The median arterymay be of large size and be largely concerned in the supply of the palm. 4. The radial artery may be FIG. 319.—TRANSVERSE SECTION OF THE FOREARM(DIAGRAMMATIC), TO SHOW THE INTERMUSCULARSPACES ABOUT THE MIDDLE THIRD. Initials indicate the tendons and muscles, a. Ulnarartery interspace ; b, Interspace to be avoided ; x,The surgical line of the ulnar artery ; r, Ulnar vessels ;2, Radial vessels ; 3, Median nerve. THE BRACHIAL ARTERYAnatomy.—The brachial artery commences at the lowermargin of the teres major, and bifurcates at a point on a levelwith the neck of the radius. It lies in the depression along theinner borders of the coraco-brachialis and biceps muscles. In the upper two-thirds of its course it lies on the inner aspectof the shaft of the humerus, and can be compressed againstthe bone by pressure in a direction outwards and slightly back-wards. In its lower third the humerus is behind it, and com-pression, to be effectual, should be directed backwards. Itruns between the skin and deep fascia as far as the elbow,where it dips into the interval between the supinator lo
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