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The ischial tuberosity (or tuberosity of the ischium, tuber ischiadicum), also known colloquially as the sit bones or sitz bones, [1] or as a pair the sitting bones, [2] is a large posterior bony protuberance on the superior ramus of the ischium. It marks the lateral boundary of the pelvic outlet.
A small part of bone with a piece of a tendon or ligament attached is avulsed (torn away). [3] Ischial bursitis (also known as weaver's bottom) is inflammation of the synovial bursa located between the gluteus maximus muscle and the ischial tuberosity, [4] and is usually caused by prolonged sitting on a hard surface.
Its oblique fibres descend laterally, converging to form a thick, narrow band that widens again below and is attached to the medial margin of the ischial tuberosity. It then spreads along the ischial ramus as the falciform process, whose concave edge blends with the fascial sheath of the internal pudendal vessels and pudendal nerve.
The ischial spine is part of the posterior border of the body of the ischium bone of the pelvis. It is a thin and pointed triangular eminence, more or less elongated in different subjects. It is a thin and pointed triangular eminence, more or less elongated in different subjects.
ischial tuberosity: medial surface of tibia: tibial part of sciatic: semimembranosus: ischial tuberosity: medial tibial condyle: tibial part of sciatic: biceps femoris - long head: ischial tuberosity: lateral side of the head of the fibula: tibial part of sciatic: biceps femoris - short head: linea aspera and lateral supracondylar line of femur
There is a relationship between the common stalk of the inferior gluteal nerve and external anatomic landmarks. The targeted region should be aimed inferior to the most prominent aspect of the greater trochanter, and medial to the landmark of the ischial tuberosity, at the depth of the posterior border of the proximal femur. Triangulating using ...
The greater sciatic notch is a notch in the ilium, one of the bones that make up the human pelvis. It lies between the posterior inferior iliac spine (above), and the ischial spine (below). The sacrospinous ligament changes this notch into an opening, the greater sciatic foramen .
Ischial tuberosity: Insertion: Medial condyle of tibia: Artery: Profunda femoris and gluteal arteries: Nerve: Tibial part of sciatic nerve (L5, S1 and S2) Actions: Extension of hip and flexion of knee: Antagonist: Quadriceps muscle and tensor fasciae latae: Identifiers; Latin: musculus semimembranosus: TA98: A04.7.02.036: TA2: 2642: FMA: 22438 ...