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Surgery versus conservative treatment for symptomatic lumbar spinal stenosis: a systematic review of randomized controlled trials

STUDY DESIGN: Systematic review. OBJECTIVE: To compare the effectiveness of surgery versus conservative treatment on pain, disability, and loss of quality of life caused by symptomatic lumbar spinal stenosis (LSS). SUMMARY OF BACKGROUND DATA: LSS is the most common reason for spine surgery in persons older than 65 years in the United States. METHODS: Randomized controlled trials (RCTs) comparing any form of conservative and surgical treatment were searched in CENTRAL, MEDLINE, EMBASE, and TripDatabase databases until July 2009, with no language restrictions. Additional data were requested from the authors of the original studies. The methodological quality of each study was assessed independently by two reviewers, following the criteria recommended by the Cochrane Back Review Group. Only data from randomized cohorts were extracted. RESULTS: A total of 739 citations were reviewed. Eleven publications corresponding to five RCTs were included. All five scored as high quality despite concerns deriving from heterogeneity of treatment, lack of blinding, and potential differences in the size of the placebo effect across groups. They included a total of 918 patients in whom conservative treatments had failed for 3 to 6 months, and included orthosis, rehabilitation, physical therapy, exercise, heat and cold, transcutaneous electrical nerve stimulation, ultrasounds, analgesics, nonsteroidal anti-inflammatory drugs, and epidural steroids. Surgical treatments included the implantation of a specific type of interspinous device and decompressive surgery (with and without fusion, instrumented or not). In all the studies, surgery showed better results for pain, disability, and quality of life, although not for walking ability. Results of surgery were similar among patients with and without spondylolisthesis, and slightly better among those with neurogenic claudication than among those without it. The advantage of surgery was noticeable at 3 to 6 months and remained for up to 2 to 4 years, although at the end of that period differences tended to be smaller. CONCLUSION: In patients with symptomatic LSS, the implantation of a specific type of device or decompressive surgery, with or without fusion, is more effective than continued conservative treatment when the latter has failed for 3 to 6 months

Keywords : adverse effects,Analgesics,Back,Decompression,Surgical,diagnostic imaging,Exercise,Humans,Lumbar Vertebrae,methods,Orthopedic Procedures,Pain,pathology,Patients,Physical Therapy Modalities,Quality of Life,Radiography,Randomized Controlled Trials as Topic,rehabilitation,Spain,Spinal Stenosis,Spine,Spondylolisthesis,Spondylosis,Steroids,surgery,therapy,United States,Walking,, Versus,Conservative,Treatment,Symptomatic, treating groin strain

Date of Publication : 2011 Sep 15

Authors : Kovacs FM;Urrutia G;Alarcon JD;

Organisation : Departamento Cientifico, Fundacion Kovacs, Palma de Mallorca, Spain. kovacs@kovacs.org

Journal of Publication : Spine (Phila Pa 1976 )

Pubmed Link : https://www.ncbi.nlm.nih.gov/pubmed/21311394

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