Superior Gluteal Nerve supplies all of the following muscles, except
**Core Concept**
The superior gluteal nerve is a nerve that arises from the dorsal divisions of the L4, L5, and S1 spinal nerves. It is a major nerve that innervates the gluteal region, providing motor innervation to several key muscles. Understanding the anatomy and innervation of the gluteal region is crucial for diagnosing and managing various musculoskeletal disorders.
**Why the Correct Answer is Right**
The superior gluteal nerve innervates the gluteus medius, gluteus minimus, and tensor fasciae latae muscles. These muscles are responsible for hip abduction, external rotation, and stabilization of the hip joint. The innervation of these muscles by the superior gluteal nerve is essential for normal gait and movement of the lower limb. The gluteus maximus muscle, on the other hand, is innervated by the inferior gluteal nerve.
**Why Each Wrong Option is Incorrect**
* **Option A:** Incorrect because the gluteus medius and minimus muscles are indeed innervated by the superior gluteal nerve.
* **Option B:** Incorrect because the tensor fasciae latae muscle is also innervated by the superior gluteal nerve.
* **Option C:** Incorrect because the gluteus maximus muscle is the correct answer, as it is innervated by the inferior gluteal nerve, not the superior gluteal nerve.
**Clinical Pearl / High-Yield Fact**
When evaluating patients with gluteal region pain or weakness, it is essential to differentiate between the innervation patterns of the superior and inferior gluteal nerves. This knowledge can help guide diagnostic testing and treatment decisions.
**Correct Answer: D. gluteus maximus muscle**