title: [Lumbar canal stenosis. Retrospective study of 158 operated cases].
abstract: The authors report the results of a retrospective study of 158 lumbar spinal stenosis (LSS), all operated (111 degenerative, 26 congenital, 21 mixed). Eighty seven percent of the patients had a low-back pain and 81.6% a radicular pain. Only 57.6% of them had a polyradicular claudication. A neurological deficit (motor, sensitive, or involving sphincters) was present in 36.6% of cases. A myelographic block was noted in 23.4% of cases, and in 20.3% a spondylolisthesis with an intact neural arch was found. Surgery consisted of a posterior lateral spinal canal calibration, sometimes associated with a ventral canal calibration (via the posterior route) (6.3%), and/or excision of a disc herniation at one (47.5%) or two levels (3.8%). Mean follow-up after surgery was 7.8 months. The global result was good or excellent in 75.2% of cases. Radicular pain was relieved in 89.1% of cases, and polyradicular claudication in 90.1% of cases. Neurological deficit improved in 50.6% of cases. In only 59.8% of cases relief of low-back pain was achieved. Statistically low-back pain (lasting for over 2 years) improved less, but a preoperative spondylolisthesis didn't influence the quality of the result regarding this symptom. Semiology, pathophysiology, and surgery particularly regarding spine stability are discussed.
authors.affiliation: Service de Neurochirurgie, Hôpital Fontmaure, CHU Clermont-Ferrand, Chamalières.
authors.forename: J J
authors.initials: JJ
authors.lastname: Lemaire
authors.forename: J L
authors.initials: JL
authors.lastname: Sautreaux
authors.forename: J
authors.initials: J
authors.lastname: Chabannes
authors.forename: B
authors.initials: B
authors.lastname: Irthum
authors.forename: J
authors.initials: J
authors.lastname: Chazal
authors.forename: O
authors.initials: O
authors.lastname: Reynoso
authors.forename: A
authors.initials: A
authors.lastname: Thierry
mesh_terms: D000328:Adult; D000368:Aged; D006801:Humans; D017116:Low Back Pain / Q000209:etiology / Q000601:surgery; D008875:Middle Aged; D009422:Nervous System Diseases / Q000209:etiology / Q000601:surgery; D011183:Postoperative Complications; D011859:Radiography; D012189:Retrospective Studies; D013126:Spinal Nerve Roots / Q000000981:diagnostic imaging; D013130:Spinal Stenosis / Q000145:classification / Q000503:physiopathology / Q000601:surgery*
vernacular_title: Le canal lombaire sténosé. Etude rétrospective de 158 cas opérés.