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The quadratus femoris is a flat, quadrilateral skeletal muscle. Located on the posterior side of the hip joint, it is a strong external rotator and adductor of the thigh, [2] but also acts to stabilize the femoral head in the acetabulum. The quadratus femoris is used in Meyer's muscle pedicle grafting to prevent avascular necrosis of femur head.
The lateral rotator group is a group of six small muscles of the hip which all externally (laterally) rotate the femur in the hip joint.It consists of the following muscles: piriformis, gemellus superior, obturator internus, gemellus inferior, quadratus femoris and the obturator externus.
The hip has five external rotators: The piriformis, superior gemellus, obturator internus, inferior gemellus, and quadratus femoris. (External rotation is an anatomical term of motion to describe rotation away from the center of the body.)
It arises from the margin of bone immediately around the medial side of the obturator membrane and surrounding bone, viz., from the inferior pubic ramus, and the ramus of the ischium; it also arises from the medial two-thirds of the outer surface of the obturator membrane, and from the tendinous arch which completes the canal for the passage of the obturator vessels and nerves.
Femoroacetabular impingement (FAI) is a condition involving one or more anatomical abnormalities of the hip joint, which is a ball and socket joint. [1] It is a common cause of hip pain and discomfort in young and middle-aged adults. [ 2 ]
The medial point of the sourcil is defined as being at the same height as the most superior point of caput femoris. −6 to 12° [12] >12° is a risk factor for instability <-6° is a risk factor for pincer impingement; Sharp angle Acetabular slope <45° Greater indicates acetabular dysplasia; Cervical diaphyseal angle
Articularis genus pulls the suprapatellar bursa superiorly during extension of the knee, [3] and prevents impingement of the synovial membrane between the patella and the femur. [ 2 ] References
The sciatic nerve, also called the ischiadic nerve, is a large nerve in humans and other vertebrate animals. It is the largest branch of the sacral plexus and runs alongside the hip joint and down the right lower limb.