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The ischium (/ ˈ ɪ s k i. ə m /; [1] pl.: ischia) forms the lower and back region of the hip bone (os coxae). Situated below the ilium and behind the pubis , it is one of three regions whose fusion creates the coxal bone .
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.
The ischium forms the lower and back part of the hip bone and is located below the ilium and behind the pubis. The ischium is the strongest of the three regions that form the hip bone. It is divisible into three portions: the body, the superior ramus, and the inferior ramus. The body forms approximately one-third of the acetabulum.
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 obturator foramen is situated inferior and somewhat anterior to the acetabulum.It is bounded by the pubis bone and the ischium: superiorly by the (grooved obturator surface) of the superior ramus of pubis, inferiorly by the ramus of ischium, and laterally by (the anterior edge of) the body of ischium (including by the margin of the acetabulum).
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.
World Book Club is a radio programme on the BBC World Service. Each edition of the programme, which is broadcast on the first Saturday of the month with repeats into the following Monday, [ 1 ] features a famous author discussing one of his or her books, often the most well-known one, with the public.
from the ischium, the inferior ramus of the ischium; It forms the inferior border of the obturator foramen and serves as part of the origin for the obturator internus and externus muscles. Also, most adductors originate at the ischiopubic ramus. The fascia of Colles is on attached to its margin.