Synovial cysts and the lithotomy position causing cauda equina syndrome.

We describe a case of cauda equina syndrome caused by synovial cysts and the lithotomy position. A transurethral resection of the prostate was performed under spinal anesthesia in the lithotomy position. We believe that this is the first case report of facet joint synovial cysts and the lithotomy position causing ischemic neurologic injury to the cauda equina.