Ischial tuberosity

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 outer gives attachment to the adductor magnus • The inner to the sacrotuberous ligament • The upper portion is subdivided into two areas by an oblique ridge, which runs downward and outward: • From the upper and outer area the semimembranosus arises • From the lower and inner, the long head of the biceps femoris and the semitendinosus ==Additional images==

File:Tuberosity of the ischium.PNG|Muscles of the gluteal and posterior femoral regions, with ischial tuberosity highlighted in red File:Gray235.png|Right hip bone. External surface. File:Gray236.png|Right hip bone. Internal surface. File:Gray237.png|Plan of ossification of the hip bone File:Gray239.png|Diameters of inferior aperture of lesser pelvis (female) File:Gray339.png|Right hip-joint from the front File:Gray436.png|The obturator externus File:Slide3ADA.JPG|Anterior view of the pelvis with the ischial tuberosity labelled in the lower part of the image ==See also==