Superior gluteal nerve

Superior Gluteal Nerve

The Superior Gluteal Nerve is a nerve in the human body that originates from the sacral plexus, a network of nerve fibers that supplies the lower limbs. It is responsible for innervating the gluteus medius, gluteus minimus, and tensor fasciae latae muscles.

Etymology

The term "Superior Gluteal Nerve" is derived from its location and function. "Superior" refers to its position above the inferior gluteal nerve, while "gluteal" pertains to its association with the gluteal muscles in the buttocks. "Nerve" is from the Latin "nervus", meaning sinew or cord.

Anatomy

The Superior Gluteal Nerve arises from the dorsal divisions of the fourth and fifth lumbar and the first sacral nerves. It exits the pelvis through the greater sciatic foramen, above the piriformis muscle, along with the superior gluteal artery and superior gluteal vein. It then divides into a superior branch and an inferior branch.

Superior Branch

The superior branch of the Superior Gluteal Nerve innervates the gluteus medius and gluteus minimus muscles.

Inferior Branch

The inferior branch of the Superior Gluteal Nerve innervates the tensor fasciae latae muscle.

Clinical Significance

Damage to the Superior Gluteal Nerve can result in Trendelenburg's sign, a characteristic gait caused by the inability to stabilize the pelvis while walking. This can occur due to injury, surgery, or diseases such as diabetes or multiple sclerosis.

Related Terms

• Inferior Gluteal Nerve
• Gluteus Maximus
• Sciatic Nerve

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