Location: A small, deep muscle in the buttock (gluteal region), lying beneath the gluteus maximus. Origin: Anterior (front) surface of the sacrum. Insertion: Greater trochanter of the femur. Action: Lateral (external) rotation of the hip Abduction of the thigh when the hip is flexed Helps stabilize the hip joint Nerve supply: Nerve to piriformis (L5, S1, S2). Clinical relevance: The sciatic nerve usually passes below it; spasm or tightness can compress the nerve, causing piriformis syndrome (but
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Location: A small, deep muscle in the buttock (gluteal region), lying beneath the gluteus maximus. Origin: Anterior (front) surface of the sacrum. Insertion: Greater trochanter of the femur. Action: Lateral (external) rotation of the hip Abduction of the thigh when the hip is flexed Helps stabilize the hip joint Nerve supply: Nerve to piriformis (L5, S1, S2). Clinical relevance: The sciatic nerve usually passes below it; spasm or tightness can compress the nerve, causing piriformis syndrome (but
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