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Internal musculoskeletal system
Last reviewed: 23.04.2024
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The internal blocking muscle (m.obturatorius internus) begins at the edges of the occlusal opening (with the exception of the locking groove), on the inner surface of the obturator's membrane, on the pelvic surface of the ilium (above the occlusion aperture) and on the occlusal fascia. The inner lumbar muscle extends from the small pelvic cavity through a small sciatic foramen, changes direction at an acute angle, overflowing the edge of a small sciatic cut (here there is a sciatic bag of the inner occlusal muscle, bursa ischiadica m.obturatorii interni). The muscle is attached to the medial surface of the large trochanter. At the place of attachment of the muscle under its tendon, there is also a subordinate bag of the inner occlusal muscle (bursa subtendinea milsculi obturatorii interni).
On leaving the occlusal opening, the upper and lower twin muscles, attached to the large skewer, join the inner occlusive muscle.
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