Lumbar Spine Muscles Gluteus Medius physical therapy multimedia.
DESCRIPTION
Gluteus medius is a broad, thick, fan-shaped muscle, most of which lies beneath gluteus maximus.
ORIGIN
Gluteus medius originates from the outer surface of the ilium between the iliac crest and posterior gluteal line above and the anterior gluteal line below, and from the fascia superficial to its upper part.
INSERTION
Gluteus medius inserts onto a ridge that slants downwards and forwards on the lateral surface of the greater trochanter.
VARIATIONS
Gluteus medius sometimes has a deep slip attached to the upper border of the trochanter. The posterior border of gluteus medius sometimes fuses with piriformis.
FUNCTION
Gluteus medius works with gluteus minimus to prevent the pelvis sagging to the unsupported side during one leg support in walking and running.
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