Sciatic nerve
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The sciatic nerve, also called the ischiadic nerve, is a large nerve in humans and other vertebrate animals. It is the largest branch of the sacral plexus and runs alongside the hip joint and down the
Right gluteal region, showing the formation of the sciatic nerve
3D still showing Sciatica.
Tibial and common fibular nerve (aka common peroneal nerve)
Sciatic nerve.
Piriformis muscle
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The piriformis muscle is a flat, pyramidally-shaped muscle in the gluteal region of the lower limbs. It is one of the six muscles in the lateral rotator group.
Sciatic nerve
…promontory and ala, and the S1 to S3 roots emerge from the ventral sacral foramina. These nerve roots unite to form a single nerve in front of the piriformis muscle. The nerve passes beneath the piriformis and through the greater sciatic foramen, exiting the pelvis. From here, it travels down the posterior thigh…
Buttocks seen from behind (the piriformis and the rest of the lateral rotator group are visible)