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gluteus mediusThe buttock muscle lying between the GLUTEUS MAXIMUS and GLUTEUS MINIMUS.
gluteus mediuspowerful muscle of gluteal (buttock) region
origin ileum, between anterior and posterior gluteal lines and iliac crest
insertion posterior superior angle of greater trochanter and lateral oblique ridge
nerve supply superior gluteal nerve
action (with gluteus minimus) tilts pelvis on hip joint of weight-bearing limb; centre of gravity moves towards support limb, allowing the foot of non-weight-bearing limb to clear the ground surface, and swing phase of gait to proceed