| ischial ramus | The branch of the ischial bone, formerly called inferior branch of the ischium; the portion of the bone that passes forward from the ischial tuberosity to join the inferior ramus of the pubic bone, thus forming the ischiopubic ramus. Synonym: ramus ossis ischii. (05 Mar 2000) |
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| ischial spine | A pointed process from the posterior border of the ischium on a level with the lower border of the acetabulum; gives attachment to the sacrospinous ligament; the pudendal nerve passes dorsal to the ischial spine, which is palpable per vagina or rectum, and thus is used as a target for the needle-tip in administering a pudendal nerve block. Synonym: spina ischiadica, ischiadic spine, sciatic spine. (05 Mar 2000) |
| ischial tuberosity | The rough bony projection at the junction of the lower end of the body of the ischium and its ramus; this is a weight-bearing point in the sitting position; provides attachment for the sacrotuberous ligament and is the site of origin of the hamstring muscles. Synonym: tuber ischiadicum, tuber of ischium. (05 Mar 2000) |
| ischialgia | 1. Pain in the hip; specifically, the ischium. Synonym: ischiodynia. 2. Rarely used term for sciatica. Synonym: ischioneuralgia. Origin: G. Ischion, hip, + algos, pain (05 Mar 2000) |
| ischias | <anatomy> See Ischial. Source: Websters Dictionary (01 Mar 1998) |
| ischiatic | <anatomy> Same as Ishial. Source: Websters Dictionary (01 Mar 1998) |
| ischiatic hernia | <surgery> A hernia through the sacrosciatic foramen. (05 Mar 2000) |
| ischiatic notch | See: greater sciatic notch, lesser sciatic notch. (05 Mar 2000) |
| ischidrosis | An obsolete term for anhidrosis. Origin: G. Ischo, to hold back, + hidrosis, perspiration (05 Mar 2000) |
| ischio- | The ischium. Origin: G. Ischion, hip joint, haunch (ischium) (05 Mar 2000) |
| ischioanal | Relating to the ischium and the anus. (05 Mar 2000) |
| ischioanal fossa | A wedge-shaped space with its base toward the perineum and lying between the tuberosity of the ischium and the obturator internus muscle laterally and the external anal sphincter and the levator ani muscle medially. Synonym: fossa ischiorectalis, ischioanal fossa, Velpeau's fossa. (05 Mar 2000) |
| ischiobulbar | <anatomy> Relating to the ischium and the bulb of the penis. (05 Mar 2000) |
| ischiocapsular | <anatomy> Of or pertaining to the ischium and the capsule of the hip joint; as, the ischiocapsular ligament. Origin: Ischium + capsular. Source: Websters Dictionary (01 Mar 1998) |
| ischiocapsular ligament | <anatomy> The thickened part of the capsule of the hip joint that passes from the ischium upward and laterally over the femoral neck; some of its fibres continue into the zona orbicularis. Synonym: ligamentum ischiofemorale, ischiocapsular ligament, ligamentum ischiocapsulare. (05 Mar 2000) |