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. Deep to the adductor brevis muscle, identify the obturator externus muscle, which attaches to the external surface of the obturator membrane and covers the obturator foramen. The obturator nerve can now be more easily seen as it passes through the obturator foramen and divides into its anterior and posterior divisions. Identify the branches of the obturator artery that accompany the branches of the obturator nerve.
Links and References:
Grant's:5.6, 5.23, and 5.24
Netter (1ed.): 471 and 481 (2ed.): 467 and 477
Rohen/Yokochi: 427, 451, and 452