DOI: 10.36347/sjmcr.2017.v5i08.002

Pages: 454-459

This is a very rare case of bilateral high division of sciatic nerve of a 49 years old male Sudanese cadaver, with bilateral divided piriformis muscle(superior larger and inferior smaller). In this case the Sciatic nerve is divided into Ttibial and Common fibular nerves within the pelvis, and comes out into gluteal region, on both sides common fibular nerve pass between two heads of divided piriformis and tibial nerve bellow the inferior piriformis. But what is very rare not bilateral high division of sciatic nerve but two nerves tibial nerve and common fibular nerve united again at the middle of quadratus femoris muscle bilaterally and continue as a common sciatic nerve and then divided a gain at the middle of popleteal fossa. Another very rare variation which is perforating Bramches of profunda femoris vessel crossing on the posterior surface of middle part of common sciatic nerve. To our knowledge there's no literature describing this kind of variation