Ischiococcygeus is another name for the coccygeus muscle, used when emphasising its ischial spine to coccyx trajectory. Some anatomists list it as a distinct component emphasising the posterior pelvic floor role.
| Origin | Ischial spine |
|---|---|
| Insertion | Lateral coccyx |
| Nerve Supply | Branches of S4-S5 |
| Blood Supply | Internal pudendal artery |
| Actions | Posteriorly supports the pelvic floor; Moves the coccyx anteriorly |
|---|
The ischiococcygeus and sacrospinous ligament are inseparable structures — the sacrospinous ligament is embedded within the ischiococcygeus. This anatomy is fundamental to sacrospinous fixation surgery for vaginal vault prolapse.
Accessed via anorectal or transvaginal examination.
The inseparability of ischiococcygeus and sacrospinous ligament making this structure the anchor point for vault suspension surgery.
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