Late superior gluteal nerve palsy following posterior fracture-dislocation of the hip.

An unusual case of late superior gluteal nerve palsy complicating posterior fracture-dislocation of the hip is reported. Posterior fracture-dislocation of the hip was Grade V according to the classification of Thompson and Epstein, and Type IV according to the subclassification of Pipkin. The palsy resulted from traction by scar tissue formation. Excision of the scar tissue and decompression of the superior gluteal nerve led to complete recovery.