. Operative surgery. Pig. Equilateral-flap method, a. Bi-lateral-flap method. 534 OPERATIVE muscles three inches, or about half their length. The muscles are thendivided by a single or repeated circular sweeps of the knife, and the bone is exposed and, after the formation of a periostealflap, sawed off three inches higher up. In circu-lar division of the muscles,m connection with anykind of flap, it is advisable that the first sweep ofthe knife should divide only the superficial layer,which will then retract, or can be drawn upwardwhen the second layer is severed at a higherp
. Operative surgery. Pig. Equilateral-flap method, a. Bi-lateral-flap method. 534 OPERATIVE muscles three inches, or about half their length. The muscles are thendivided by a single or repeated circular sweeps of the knife, and the bone is exposed and, after the formation of a periostealflap, sawed off three inches higher up. In circu-lar division of the muscles,m connection with anykind of flap, it is advisable that the first sweep ofthe knife should divide only the superficial layer,which will then retract, or can be drawn upwardwhen the second layer is severed at a higherpoint, thus causing the open stump to presenta conical-shaped cavity, the sawed bone corre-sponding to the apex (Figs. 634 and 635). The Amputation hy the Antero-posterior Mus-culo-integmnentary-flap Method (Figs. 480 and481).—These flaps include all of the tissues down T^ nr,A r^ ? 1 I. J to the bone, and are usually made by transfixion, Fig. 634.—Conical-shaped cay- . -^ ? ,,- ity from repeated circular although the anterior one may be made by cutting incisions of muscles in cir- f^om without an
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