APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -The inferior gluteal nerve arises from the dorsal branches of the L5, S1, and S2 ventral rami. It leaves the pelvis via the greater sciatic foramen below the piriformis and divides into branches that enter the deep surface of the gluteus maximus (Mahadevan, 2008; Williams, 2005).

Detailed explanation-2: -Inferior gluteal nerve[3]: Arising from the dorsal branches of L5 to S2 leaves the pelvis via the greater sciatic foramen running under the piriformis before branching into and supplying the gluteus maximus.

Detailed explanation-3: -Inferior gluteal artery. This artery usually exits the pelvis by passing between the S1 and S2, or the S2 and S3, ventral rami. As with the superior gluteal artery, this artery also helps to supply the buttock and thigh.

Detailed explanation-4: -The superior gluteal nerve is found in the lower pelvis and arises from the dorsal divisions of the L4, L5, and S1 nerve roots of the sacral plexus. The superior gluteal nerve is responsible for innervation of the gluteus medius, gluteus minimus, and tensor fasciae latae muscles.