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The perforate acetabulum is a cup-shaped opening on each side of the pelvic girdle formed where the ischium, ilium, and pubis all meet, and into which the head of the femur inserts. [ 8 ] [ 9 ] The orientation and position of the acetabulum is one of the main morphological traits that caused dinosaurs to walk in an upright posture with their ...
The observer must orientate the hip such that they are directly facing the ischio-pubic ramus. A female hip will have a pronounced ridge on this face while a male hip will have a broad flat surface. This criterion is the least distinct of those that Phenice describes, with the highest similarity in male and female examples.
In accordance with the overall sex dimorphism of the pelvis, [citation needed] the obturator foramina are oval in the male, and wider and rather triangular in the female. [1] Unilateral pelvic hypoplasia can cause differences in size between the obturator foramina. Rarely, the obturator foramen may be doubled on one side.
In vertebrate anatomy, the hip, or coxa [1] (pl.: coxae) in medical terminology, refers to either an anatomical region or a joint on the outer (lateral) side of the pelvis.. The hip region is located lateral and anterior to the gluteal region, inferior to the iliac crest, and lateral to the obturator foramen, with muscle tendons and soft tissues overlying the greater trochanter of the femur. [2]
The male pelvis, formed by left and right hip bones, sacrum, and coccyx. The female pelvis is wider than the male pelvis to accommodate childbirth. At about the age of puberty, ossification takes place in each of the remaining portions, and they join with the rest of the bone between the twentieth and twenty-fifth years.
The orientation and position of the acetabulum is one of the main morphological traits that caused dinosaurs to walk in an upright posture with their legs directly underneath their bodies. [10] The prepubic process is a bony extension of the pubis that extends forward from the hip socket and toward the front of the animal. This adaptation is ...
In the female the pelvis can be of a much larger size than normal, known as a giant pelvis or pelvis justo major, or it can be much smaller, known as a reduced pelvis or pelvis justo minor. [43] Other variations include an android pelvis, a pelvis of the normal male shape in a female, which can prove problematic in childbirth.
The lunate surface of acetabulum is the articular surface of the acetabulum which makes contact with the femoral head as part of the hip joint. It forms an incomplete ring that is deficient inferiorly - opposite the acetabular notch .