APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -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.

Detailed explanation-2: -The obturator externus is a small muscle found in the superomedial area of the thigh. The muscle originates from the external surface of the obturator membrane and inserts on the posterior side of the greater trochanter. It passes distally to the neck of the femur and the acetabulum.

Detailed explanation-3: -The gluteal muscles, often called glutes, are a group of three muscles which make up the gluteal region commonly known as the buttocks: the gluteus maximus, gluteus medius and gluteus minimus. The three muscles originate from the ilium and sacrum and insert on the femur.

Detailed explanation-4: -Tips for the gluteal muscles The order of the deep gluteal muscles inferior to piriformis follows the mnemonics “GOGO-Q” or “GO In, GO Out-Q” for superior-to-inferior: Gemellus superior. Obturator internus. Gemellus inferior.