Which muscle shares the same innervation as the nerve to obturator internus?

Which muscle shares the same innervation as the nerve to obturator internus?

• A. Superior gemellus
• B. Obturator externus
• C. Inferior gemellus
• D. Quadratus femoris

Answer: (A)

Innervation patterns among the deep hip rotators show that the nerve to obturator internus provides motor supply to both the obturator internus and the superior gemellus. That shared innervation explains why the superior gemellus is the best answer. The obturator externus is innervated by the obturator nerve, while the inferior gemellus and quadratus femoris receive their supply from the nerve to quadratus femoris. So the muscle that shares the same innervation as the nerve to obturator internus is the superior gemellus.

Innervation patterns among the deep hip rotators show that the nerve to obturator internus provides motor supply to both the obturator internus and the superior gemellus. That shared innervation explains why the superior gemellus is the best answer. The obturator externus is innervated by the obturator nerve, while the inferior gemellus and quadratus femoris receive their supply from the nerve to quadratus femoris. So the muscle that shares the same innervation as the nerve to obturator internus is the superior gemellus.