. Manual of operative surgery. the olecranon. Step 3.—By dissection lay bare, but do not penetrate, the posterior andlateral surfaces of the articular capsule. Step 4.—Divide the humerus and retract its articular end downwards (), thus exposing the anterior surface of the joint. Step 5.—Separate the overlying soft structures from the anterior surface ofthe capsule. Step 6.—Divide the ulna. At a lower level divide the radius. (The sectionof the radius at a lower level than that of the ulna is important for the preserva-tion of pronation and supination.) The articular ends of the bones p
. Manual of operative surgery. the olecranon. Step 3.—By dissection lay bare, but do not penetrate, the posterior andlateral surfaces of the articular capsule. Step 4.—Divide the humerus and retract its articular end downwards (), thus exposing the anterior surface of the joint. Step 5.—Separate the overlying soft structures from the anterior surface ofthe capsule. Step 6.—Divide the ulna. At a lower level divide the radius. (The sectionof the radius at a lower level than that of the ulna is important for the preserva-tion of pronation and supination.) The articular ends of the bones plus thewhole joint cavity can now be removed in one piece. Step 7.—With chisel, forceps, or saw cut a V-shaped notch in the humerus RESECTION ELBOW III3 (Fig. 1370). Trim the upper end of the ulna so as to fit into the notch inthe humerus while the forearm is held in a position of a little less than aright angle to the upper arm. Unite the ulna to the humerus by means of anail (Fig. 1371). Step —Close the
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