Tuberosity of the ischium
|Bone: Tuberosity of the ischium|
|Capsule of hip-joint (distended). Posterior aspect. (Tuberosity of ischium visible at bottom left.)|
|The superficial branches of the internal pudendal artery. (Tuber. ischial. visible at center left.)|
|Gray's||subject #57 235|
It marks the lateral boundary of the pelvic outlet.
The tuberosity is divided into two portions: a lower, rough, somewhat triangular part, and an upper, smooth, quadrilateral portion.
- The lower portion is subdivided by a prominent longitudinal ridge, passing from base to apex, into two parts;
- The upper portion is subdivided into two areas by an oblique ridge, which runs downward and outward;
The Obturator externus.
- Goossens R, Teeuw R, Snijders C (2005). "Sensitivity for pressure difference on the ischial tuberosity.". Ergonomics. 48 (7): 895–902. PMID 16076744.
- SUNY Labs 41:st-0204 - "The Female Perineum: Bones"
- SUNY Labs 17:os-0114 - "Major Joints of the Lower Extremity: Hip bone (lateral view)"
- Norman/Georgetown pelvis (pelvisposterior, pelvislateral, pelvisinside)
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.