| Ischial tuberosity | |
|---|---|
 Capsule of hip-joint (distended). Posterior aspect. (Ischial tuberosity visible at bottom left.) | |
| Details | |
| Identifiers | |
| Latin | tuber ischiadicum, tuberositas ischiadica |
| TA98 | A02.5.01.204 |
| TA2 | 1342 |
| FMA | 17010 |
| Anatomical terms of bone | |
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.
When sitting, the weight is frequently placed upon the ischial tuberosity.[3] The gluteus maximus provides cover in the upright posture, but leaves it free in the seated position.[4] The distance between a cyclist's ischial tuberosities is one of the factors in the choice of a bicycle saddle.
- ^ M.D, John R. Schultz (October 28, 2019). "Sit Bones Pain (aka Sitz Bone)". Centeno-Schultz Clinic. Retrieved April 12, 2020.
- ^ Sills, Franklyn (2004). Craniosacral Biodynamics: The Primal Midline and the Organization of the Body (revised, illustrated ed.). Berkeley, CA: North Atlantic Books. p. 99. ISBN 1-55643-390-5.
- ^ Goossens (2005), pp 895–982
- ^ Platzer (2004), p 236