<prompt> Root value for nerve to Quadratus femoris -L1L2 L3L2 L3 L4L4 L5 S1S1 S2 S3  <response>: Ans. is c i.e., L4 L5 S1o Nerve to quadratus femoris is a branch of sacral plexus with root value L4 L5 S.Sacral plexus has been explained in previous sessions. 