<prompt> Most common obstetrics nerve palsy?Foot dropFacial nerveMedian nerveRadial nerve  <response>: Ref. DC Duttas Textbook of Obstetrics. Pg 511The commonest form of obstetric palsy encountered in puerperal period is foot drop. It is usually unilateral and appears shortly after delivery or during first day postpartum or so. It is thought to be due to stretching of the lumbosacral trunk by the prolapsed intervertebral disc between L5 and S1. 