Gluteus medius muscle

Gluteus medius muscle is one of the three Gluteal muscles located in the buttock region. It is a broad, thick, radiating muscle, situated on the outer surface of the pelvis. Its posterior third is covered by the gluteus maximus, its anterior two-thirds by the gluteal aponeurosis, which separates it from the subcutaneous tissues.

Anatomy

The gluteus medius muscle starts, or "originates", on the outer surface of the ilium between the iliac crest and the posterior gluteal line above, and the anterior gluteal line below; the gluteus medius also originates from the gluteal aponeurosis that covers its outer surface.

The fibers of the muscle converge into a strong flattened tendon that inserts on the lateral surface of the greater trochanter. More specifically, the muscle's tendon inserts into an oblique ridge that runs downward and forward on the lateral surface of the greater trochanter.

Function

The gluteus medius muscle functions as a primary internal rotator of the hip joint. It is also a key stabilizer of the hip and pelvis during weight-bearing activities such as walking and running.

Clinical significance

Weakness or dysfunction of the gluteus medius muscle can lead to a variety of problems, including hip pain, lower back pain, and gait abnormalities. It is often a target for physical therapy and rehabilitation exercises.

See also

• Gluteus maximus muscle
• Gluteus minimus muscle
• Hip muscles
• Pelvis

References

Gluteus medius muscle Resources
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