Obturator membrane

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Obturator membrane
Anterior cut-out view of right pelvis, obturator membrane labeled at center.
Latin membrana obturatoria
TA A03.6.01.002
FMA 25709
Anatomical terminology

The obturator membrane is a thin fibrous sheet, which almost completely closes the obturator foramen.

Its fibers are arranged in interlacing bundles mainly transverse in direction; the uppermost bundle is attached to the obturator tubercles and completes the obturator canal for the passage of the obturator vessels and nerve.

The membrane is attached to the sharp margin of the obturator foramen except at its lower lateral angle, where it is fixed to the pelvic surface of the inferior ramus of the ischium, i. e., within the margin.

Both obturator muscles are connected with this membrane.

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This article incorporates text in the public domain from page 476 of the 20th edition of Gray's Anatomy (1918)

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