Surgical Versus Nonoperative Treatment for Lumbar Spinal Stenosis Four-Year Results of the Spine Patient Outcomes Research Trial.
Weinstein JN, Tosteson TD, Lurie JD, et al.
Spine. 2010; 35: 1329-1338.
PMID: 20453723
The prospective, multicenter SPORT study included both randomized and observational cohorts treated surgically and nonoperatively for stenosis. The clinically significant benefits of surgery persisted for four years with greater initial pain relief than nonoperative treatment. This is the best clinical trial describing mid-term benefits of surgery for stenosis.