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Upper and lower twin muscles
Medical expert of the article
Last reviewed: 07.07.2025
The superior gemellus muscle (m.gemellus superior) originates on the ischium, the inferior gemellus muscle (m.gemellus inferior) - on the ischial tuberosity.
Function of the superior and inferior gemellus muscles: rotate the thigh outward.
Innervation of the superior and inferior gemellus muscles: muscular branches of the sacral plexus (LIV-LV, SI-SIII).
Blood supply to the superior and inferior gemellus muscles: inferior gluteal, obturator and internal pudendal arteries.
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