Operative surgery . The arterylies beneath the junction of the upperand middle thirds of this line (). The vessel lies at the upper borderof the ischiatic notch, which is a deepbony guide to it. The Operation.—Place the patienton the abdomen, with the thighs ex-tended and rotated inward ; make an incision five inches in length in thecourse of the line already indicated. The direction of the incision will corre-spond to the course of the fibers of the gluteus maximus muscle, whichfibers can be readily separated with the handle of the scalpel and drawnapart and the notch sought for. The a
Operative surgery . The arterylies beneath the junction of the upperand middle thirds of this line (). The vessel lies at the upper borderof the ischiatic notch, which is a deepbony guide to it. The Operation.—Place the patienton the abdomen, with the thighs ex-tended and rotated inward ; make an incision five inches in length in thecourse of the line already indicated. The direction of the incision will corre-spond to the course of the fibers of the gluteus maximus muscle, whichfibers can be readily separated with the handle of the scalpel and drawnapart and the notch sought for. The artery is then liberated from the ac-companying veins, and the ligature is passed in the most convenient manner(Pig. 185). The Fallacies.—The artery may be mistaken for either of the venaecomites ; otherwise no fallacy need occur. The Results.—The operation itself implies but little danger to thepatients. Ligature of the Sciatic Artery.—The sciatic artery, like the gluteal, maysuffer from external Pig. 184.—Linear guides to gluteal (A, B)and sciatic arteries (A, C, and D). THE LIGATURE OP ARTERIES. 137 The Anatomical Points.—The sciatic artery escapes from the pelvis be-low the pyriformis muscle, and passes downward in the interval between thetuberosity of the ischium and the trochanter major. The Contiguous Anatoiny. — The vessel is covered by the gluteusmaximus; the sciatic nerve accompanies it, and it is posterior to the pudicartery. The linear guides to the vessel are two in number, one (Fig. 184) ofwhich {D) is drawn parallel with the linear guide to the gluteal artery, only GLUTEUS MAXIMUS GLUTEAL N .SCIATIC A. INT PUDIC N.
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