Sciatic Foramen

Fig. 7.52. Recurrent tumor of the pelvic sidewall after hysterectomy. T2w TSE image in sagittal orientation. A solid, heterogeneous mass with irregular margins (arrows) and infiltration of muscle is seen anterior to the sciatic foramen...

The transgluteal approach through the greater sciatic foramen... 

For the transgluteal approach, the patient is placed in prone position. The needle is introduced from the buttock through the greater sciatic foramen into the deep pelvis as close to the coccygeal bone as possible in order to avoid puncture of the sciatic nerve. 

Piriformis. The piriformis muscle originates on the pelvic surface of the sacrum, at the margin of the greater sciatic foramen, and at the sacrotuberous ligament. It inserts on to... 

Post femoral cutan n. Greater sciatic foramen Ischial tuberosity Pudendal n. 

Hiift-loch, n. obturator foramen, -nerv, m. sciatic nerve. 

---