"The superior gluteal nerve arises from the posterior divisions of the lumbosacral plexus with the sciatic nerve, inferior gluteal nerve, and coccygeal nerve. It is specifically formed from the posterior rami of the L4-S1 nerve roots and shortly after forming exits the pelvis through the greater sciatic foramen superior to the piriformis muscle. After exiting the pelvis, the superior gluteal nerve divides into superior and inferior branches. The branches run between gluteus medius and minimus. The superior branch accompanies the upper branch of the deep branch of the superior gluteal artery to supply gluteus medius and occasionally gluteus minimus. The inferior branch travels with the lower ramus of the deep branch of the superior gluteal artery; it supplies gluteus medius and minimus, and terminates in the tensor fasciae latae, which it also innervates. Recent data further suggest that the superior gluteal nerve innervates the piriformis muscle in most individuals. Additionally, the superior gluteal nerve provides sensory innervation to the hip joint.1,2,3,4"
"The understanding of the anatomy of this nerve and the function of the muscles it innervates (primarily hip abduction) is critical because the nerve may be injured during surgical procedures around the pelvis, both arthroscopic and open procedures. The risk of injury is especially high during total hip arthroplasty (THA). Such injuries typically result in a waddling (gluteal, Trendelenburg) gait due to pelvic instability. The patient will show a positive Trendelenburg sign characterised by unilateral pelvis drooping when the patient stands solely on the contralateral limb. The superior gluteal nerve may be visualised using MR neurography. 3,5 "
"The understanding of the anatomy of this nerve and the function of the muscles it innervates (primarily hip abduction) is critical because the nerve may be injured during surgical procedures around the pelvis, both arthroscopic and open procedures. The risk of injury is especially high during total hip arthroplasty (THA). Such injuries typically result in a waddling (gluteal, Trendelenburg) gait due to pelvic instability. The patient will show a positive Trendelenburg sign characterised by unilateral pelvis drooping when the patient stands solely on the contralateral limb. The superior gluteal nerve may be visualised using MR neurography. 3,5 "
"Clinical and Radiologic Considerations"
Expected headings
"Clinical and Radiologic Considerations"
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"The superior gluteal nerve is formed from the posterior rami of L4, L5 and S1 nerve roots of the lumbosacral plexus. The nerve supplies the gluteus minimus and medius muscles and terminates by innervating the tensor fasciae latae muscle."
"The superior gluteal nerve arises from the posterior divisions of the lumbosacral plexus with the sciatic nerve, inferior gluteal nerve, and coccygeal nerve. It is specifically formed from the posterior rami of the L4-S1 nerve roots and shortly after forming exits the pelvis through the greater sciatic foramen superior to the piriformis muscle. After exiting the pelvis, the superior gluteal nerve divides into superior and inferior branches. The branches run between gluteus medius and minimus. The superior branch accompanies the upper branch of the deep branch of the superior gluteal artery to supply gluteus medius and occasionally gluteus minimus. The inferior branch travels with the lower ramus of the deep branch of the superior gluteal artery; it supplies gluteus medius and minimus, and terminates in the tensor fasciae latae, which it also innervates. Recent data further suggest that the superior gluteal nerve innervates the piriformis muscle in most individuals. Additionally, the superior gluteal nerve provides sensory innervation to the hip joint.1,2,3,4"