Ischium
Ischium
Ischium (/ˈɪskiəm/; from Greek: ἰσχίον, iskhíon or "hip joint") is one of the three major bones that constitute the pelvis in the human body. It is situated in the lower and back part of the pelvis.
Anatomy
The ischium forms the lower and back part of the hip bone. It is located below the ilium and behind the pubis. The ischium is the strongest of the three bones that make up 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, which is the cup-shaped socket of the hip joint.
Function
The ischium provides support in the sitting position and serves as a connection for various muscles. The most prominent feature of the ischium is the ischial tuberosity, which receives the weight of the body when sitting.
Related Terms
- Ischial tuberosity: The roughened area on the human ischium. It is the part of the pelvis that one sits on.
- Ischial spine: A thin pointed triangular eminence, which projects backward and medially into the pelvic cavity from the ischium.
- Ischial bursitis: A condition that results from prolonged pressure on the ischial tuberosity.
See Also
External links
- Medical encyclopedia article on Ischium
- Wikipedia's article - Ischium
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