Subjects will be between the ages of 18 and 90. Male and female subjects will be recruited into the study. All patients will clinically demonstrate unilateral lower extremity pain in greater proportion to low back pain symptoms if present. Imaging (CT) will document single level lumbar herniated nucleus pulposis. Exclusion criteria will be cauda equina syndrome, progressive neurologic deficit, bilateral lower extremity symptoms, low back pain more than leg pain, the existence of significant co-morbidity (e.g. cardiac condition, disease, etc.) of any form, and any other physical limitations (musculoskeletal injury). Subjects participating will be required to speak and read English.