Ischium – ischial tuberosity

Ischium - ischial tuberosity

Anatomy

Large swelling of posterior part of superior ramus of ischium, forming lowermost part of pelvis, giving attachment to biceps femoris, semimembranosus and semitendinosus (hamstrings) and adductor muscles and sacrotuberous ligaments.

Clinical

Sitting bone; one sits on and with one’s ischial tuberosity. Common site of pain in athletes, due to avulsion injuries cause by pull of attached muscles and ligaments.

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