The Role of the Piriformis Muscle in Orthopedic Surgery

The most common anatomical pattern is a single sciatic nerve which passes anterior to the piriformis muscle. PCORNI et al. in a study of 91 cadavers found atypical anatomy of the sciatic nerve in almost 21% of cases. The normal anatomy seen in 79% is a single Sciatic nerve exiting underneath or passing anterior to thePiriformis. That's all for this review about Piriformis muscle syndrome. We hope that was helpful.