Patients who qualify for this study will have persistent leg pain attributed to lumbar HNP and be under typical medical / chiropractic care. At the stage of their entry into this project, the question of surgical intervention may be a realistic alternative. The experimental maneuver will contrast the ability of the OPV vs the EZF to improve symptoms and function. Patients assigned to the OPV group will be measured by the PC / PR and fit for the device. They will receive instructions in its use QID for a minimum of 30 minutes. Patients assigned to the EZF orthotic will be fit for the device and instructed to wear it during weight bearing hours.