Piriformis

Piriformis The structure indicated is the piriformis muscle. The piriformis muscle is one of the muscles of the gluteal region. The muscles in the gluteal region are divided into a superficial and deep group. There are four muscles of the superficial group: Gluteus maximus Gluteus medius Gluteus minimus Tensor fasciae latae There are 5 muscles in the deep group: Gemellus superior Gemellus inferior Quadratus femoris Piriformis Obturator internus The deep muscles of the gluteal region generally serve to laterally rotate the femur. The piriformis muscle passes through the greater sciatic foramen and divides it into two spaces: Greater sciatic foramen …

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