Abstract
Sciatic nerve is a broad, thickest and the largest nerve of body, arising from sacral plexus. In our case, sciatic nerve already divided in pelvis, and common peroneal nerve came out above an undivided piriformis, tibial nerve below Piriformis. According to different study, it shows that there are many variations in sciatic nerve division especially in higher divisions. This knowledge is also very important for nurses and junior doctor to prevent deep intramuscular injection hazards in gluteal region.