ABSTRACT Objective: To perform a prospective analysis of the quality of life prognostic factors in patients undergoing lumbar discectomy after two years of the procedure, relating the tools Short Form Health Survey, Roland Morris, Oswestry Disability Index, and VAS. Methods: Seventy-two patients were evaluated through the questionnaires in the preoperative, and one month, six months, one year and two years in the postoperative period, being performed lumbar discectomy after failure of conservative treatment. Results: We observed an improvement in comparative analysis during follow-up regarding baseline values. Conclusion: The domains social aspect, pain, general state, emotional aspect, mental health and vitality presented an improvement from the first month after the surgery; however, the domain functional capacity only showed significant improvement after 6 months and the physical aspects only after one year. Roland-Morris and VAS scales improved after one month after surgery, but Oswestry scale showed that for the measured aspects there was only improvement after six months of surgery.