Nerve to obturator internus
Nervus obturatoris interni
- Latin synonym: Nervus musculi obturatorii interni
- Synonym: Nerve to obturator internus muscle
- Related terms: Nerve to obturator internus muscle
Definition
The Nerve to the Obturator Internus and Gemellus Superior arises from the ventral divisions of the fifth lumbar and first and second sacral nerves. It leaves the pelvis through the greater sciatic foramen below the Piriformis, and gives off the branch to the Gemellus superior, which enters the upper part of the posterior surface of the muscle. It then crosses the ischial spine, reënters the pelvis through the lesser sciatic foramen, and pierces the pelvic surface of the Obturator internus.
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