Piriformis muscle
Videos
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.
Buttocks seen from behind (the piriformis and the rest of the lateral rotator group are visible)
Sciatic nerve
Videos
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
Piriformis muscle
…It exits the pelvis through the greater sciatic foramen superior to the sacrospinous ligament. In around 80% of the population, the sciatic nerve travels below the piriformis muscle. In 17% of people, the piriformis muscle is pierced by parts or all of the sciatic nerve. Several variations occur…
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.