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The innominate bones join in the front of the pelvis to form the pubic symphysis, and at back of the sacrum to form the sacroiliac (SI) joints. Each innominate bone (ilium) joins the femur (thigh bone) to form the hip joint; thus the sacroiliac joint moves with walking and movement of the torso .
The posterior sacroiliac (SI) ligaments can be further divided into short (intrinsic) and long (extrinsic). [9] The dorsal interosseous ligaments are very strong ligaments. They are often stronger than bone, such that the pelvis may actually fracture before the ligament tears. The dorsal sacroiliac ligaments include both long and short ligaments.
While the pelvis has long been recognised as an important piece of skeletal morphology in determining sex, the Phenice method was proposed in 1969 by T.W. Phenice. Before Phenice's ideas the study of the pubis focussed on aspects such as the width of the pubis, the pre-auricular suculus and the greater sciatic notch among others.
The posterior longitudinal ligament is situated within the vertebral canal.It extends across the posterior surfaces of the bodies of the vertebrae. [1] It extends superoinferiorly between the body of the axis superiorly, [1] and (sources differ) the sacrum and possibly the coccyx [1] or upper sacral canal [2] inferiorly.
The right brachiocephalic vein is about 2.5cm long. [3] The right vein is formed by the confluence of the right subclavian vein and the right internal jugular vein. It receives the following tributaries: The right vertebral vein, the internal thoracic vein, and the thyroid veins, and occasionally from the first right posterior intercostal veins ...
The innominate artery should be debrided to healthy tissue and closed with a monofilament suture. [5] Next, the damaged segments of the trachea and the artery should be excised followed by reconstruction with a primary end to end anastomosis of the trachea. Innominate artery ligation leaves the carotid and subclavian circulations intact. [4]
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.
The posterior interosseous nerve (or dorsal interosseous nerve/deep radial nerve) is a nerve in the forearm. It is the continuation of the deep branch of the radial nerve, after this has crossed the supinator muscle. It is considerably diminished in size compared to the deep branch of the radial nerve.