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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.
Normally the greater trochanter of the femur lies below this line, but in cases of iliac joint dislocation [1] of the hip or fracture of the neck of the femur the trochanter is felt above or in the line. [2] Though the line can be of help for diagnosis of fractures, its practical value is disputed. [3]
Greater trochanteric pain syndrome (GTPS), a form of bursitis, is inflammation of the trochanteric bursa, a part of the hip. This bursa is at the top, outer side of the femur, between the insertion of the gluteus medius and gluteus minimus muscles into the greater trochanter of the femur and the femoral shaft. It has the function, in common ...
The greater trochanter of the femur is a large, irregular, quadrilateral eminence and a part of the skeletal system. It is directed lateral and medially and slightly posterior. In the adult it is about 2–4 cm lower than the femoral head. [1] Because the pelvic outlet in the female is larger than in the male, there is a greater distance ...
pudendal nerve entrapment, ischiofemoral impingement, greater trochanter ischial impingement, and ischial tunnel syndrome. [1] Treatment: Conservative treatments include physical therapy, analgesics, and injections. [2] [4] Surgical treatment is a sciatic nerve decompression and/or muscle resection. [5]
It runs from the sacrum (the lower transverse sacral tubercles, the inferior margins sacrum and the upper coccyx [1]) to the tuberosity of the ischium. It is a remnant of part of biceps femoris muscle. The sacrotuberous ligament is attached by its broad base to the posterior superior iliac spine, the posterior sacroiliac ligaments (with which ...
The ischial bursa is a synovial bursa located between gluteus maximus muscle and ischial tuberosity. [4] When in a seated position, the ischial bursa is put under the highest amount of pressure, which is most significant against a hard surface. [3] Friction from exercise can lead to inflammation of the ischial bursa, known as bursitis. [1]
In a standing posture it is a lateral rotator, but it also assists extending the thigh. The gluteus maximus has its origin between (and around) the iliac crest and the coccyx, from where one part radiates into the iliotibial tract and the other stretches down to the gluteal tuberosity under the greater trochanter. The gluteus maximus is ...