sciatic foramen n.
Either of two foramina, designated greater and lesser, formed by the sacrospinous and sacrotuberous ligaments crossing the sciatic notches of the hipbone.
- Sciatic hernia
sciatic hernia n. Protrusion of intestine through the great sacrosciatic foramen. Also called ischiocele.
noun, Anatomy. 1. either of a pair of nerves, the largest in the body, that originate in the sacral plexus of the lower back and extend down the buttocks to the back of the knees, where they divide into other nerves: the sciatic nerve and its branches innervate large areas of the pelvis, leg, and […]
- Sciatic spine
sciatic spine n. A pointed process from the posterior border of the ischium on a level with the lower border of the acetabulum. Also called ischiadic spine.
Pathology. 1. severe combined immune deficiency. abbreviation 1. severe combined immune deficiency; a serious condition in which babies are born with reduced numbers of T- and B-lymphocytes, which impairs their immune systems and makes them susceptible to severe infections and cancer SCID abbr. severe combined immunodeficiency SCID 1. severe combined immunodeficiency 2. spacecraft identification