Original ContributionsImprovement of Preoperative Foot Drop After Lumbar SurgeryGirardi, Federico P.*; Cammisa, Frank P. Jr.*; Huang, Russel C.*; Parvataneni, Hari K.†; Tsairis, Peter*Author Information *Hospital for Special Surgery and †Lenox Hill Hospital, New York, New York, U.S.A. Received April 2, 2002; accepted September 20, 2002. Abstract presented at the North American Spine Society 2000, Eurospine 2000, and the International Society for the Study of the Lumbar Spine 2000. Address correspondence and reprint requests to Dr. Federico P. Girardi, SpineCare Institute, Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021, U.S.A. E-mail: [email protected] Journal of Spinal Disorders & Techniques: December 2002 - Volume 15 - Issue 6 - p 490-494 Buy Abstract Foot drop is a common and debilitating finding in patients with lumbar spinal disorders. Recovery of function after surgical treatment of the underlying disorder is not well documented in the literature. The purpose of this retrospective study was to analyze the prognosis of preoperative foot drop after lumbar surgery in 55 patients with foot drop and herniated nucleus pulposus and/or lumbar spinal stenosis. Preoperative dorsiflexion motor strength improved measurably in 98%, and 71% had full recovery of strength. All patients had associated neurologic findings and 71% experienced complete resolution. No statistically significant relationship was found between the extent of recovery and age, diagnosis (herniated nucleus pulposus vs. lumbar spinal stenosis), duration of symptoms, or severity of preoperative weakness. In our series, the prognosis of preoperative foot drop and associated neurologic deficits treated by lumbar spine surgery was excellent. © 2002 Lippincott Williams & Wilkins, Inc.