- sciatic nerve is palpated by rolling it under surgeon's finger as it crosses ischial projection from posteroinferior aspect of the acetabulum;
- palpate sciatic nerve as it passes superficial to obturator internus & gemelli;
- sciatic nerve emerges below piriformis & passes downwards superficial to obturator internus & gemelli & quadratus femoris;
- if possible, sciatic nerve should be reidentified every time hip is moved;
- it is not always necessary to identify sciatic nerve, unless hip joint is grossly distorted;
- in fact, dissection to see nerve may cause unnecessary bleeding from the vessels lying in the fat around it;
- sciatic nerve sometimes divides into a tibial and peroneal brach within pelvis, and on occassion one may identify the sciatic nerve but think that it looks to small, then search for the other branch
Exposure of the sciatic nerve in the gluteal region without sectioning the gluteus maximus: Analysis of a series of 18 cases.
Sciatic nerve palsy after primary total hip arthroplasty: a new perspective.