Julie M Fritz1, Jon D Lurie2, Wenyan Zhao3, Julie M Whitman4, Anthony Delitto5, Gerard P Brennan6, James N Weinstein7. 1. Department of Physical Therapy, University of Utah, 520 Wakara Way, Salt Lake City, UT 84108, USA; Physical Therapy Division, Intermountain Healthcare, 5848 South 300 East Murray, Salt Lake City, UT 84107, USA. Electronic address: julie.fritz@hsc.utah.edu. 2. Department of Medicine, Dartmouth Medical School, 1 Rope Ferry Rd, Hanover, NH 03755, USA; The Dartmouth Institute for Health Policy and Clinical Practice, Dartmouth College, 35 Centerra Pkwy, Lebanon, NH 03766, USA. 3. Department of Orthopaedics, Dartmouth Medical School, One Medical Center Dr, Lebanon, NH 03756, USA. 4. Fellowship Program, Evidence in Motion, 3000 Equity Place, Suite 105, Louisville, KY 40223, USA. 5. Department of Physical Therapy, University of Pittsburgh, 6036 Forbes Tower, Pittsburgh, PA 15241, USA. 6. Physical Therapy Division, Intermountain Healthcare, 5848 South 300 East Murray, Salt Lake City, UT 84107, USA. 7. Department of Medicine, Dartmouth Medical School, 1 Rope Ferry Rd, Hanover, NH 03755, USA; The Dartmouth Institute for Health Policy and Clinical Practice, Dartmouth College, 35 Centerra Pkwy, Lebanon, NH 03766, USA; Department of Orthopaedics, Dartmouth Medical School, One Medical Center Dr, Lebanon, NH 03756, USA.
Abstract
BACKGROUND CONTEXT: A period of nonsurgical management is advocated before surgical treatment for most patients with lumbar spinal stenosis. Currently, little evidence is available to define optimal nonsurgical management. Physical therapy is often used, however its use and effectiveness relative to other nonsurgical strategies has not been adequately explored. PURPOSE: Describe the use of physical therapy and other nonsurgical interventions by patients with lumbar spinal stenosis and examine the relationship between physical therapy and long-term prognosis. STUDY DESIGN: Secondary analysis of the Spine Patient Outcomes Research Trial (SPORT) combining data from randomized and observational studies. SETTING:Thirteen spine clinics in 11 states in the United States. PATIENT SAMPLE: Patients with lumbar spinal stenosis receiving nonsurgical management including those who did or did not receive physical therapy within 6 weeks of enrollment. OUTCOME MEASURES: Primary outcome measures included crossover to surgery, the bodily pain and physical function scales changes from the Survey Short Form 36 (SF-36), and the modified Oswestry Disability Index. Secondary outcome measures were patient satisfaction and the Sciatica Bothersomeness Index. METHODS: Baseline characteristics and rates of crossover to surgery were compared between patients who did or did not receive physical therapy. Baseline factors predictive of receiving physical therapy were examined with logistic regression. Mixed effects models were used to compare outcomes between groups at 3 and 6 months and 1 year after enrollment adjusted for baseline severity and patient characteristics. RESULTS:Physical therapy was used in the first 6 weeks by 90 of 244 patients (37%) and was predicted by the absence of radiating pain and being single instead of married. Physical therapy was associated with a reduced likelihood of crossover to surgery after 1 year (21% vs. 33%, p=.045), and greater reductions on the Short Form 36 physical functioning scale after 6 months (mean difference=6.0, 95% confidence interval: 0.2-11.7) and 1 year (mean difference=6.5, 95% confidence interval: 0.6-12.4). There were no differences in bodily pain or Oswestry scores across time. CONCLUSIONS: Many patients with lumbar spinal stenosis pursuingconservative management receive physical therapy. Using physical therapy was associated with reduced likelihood of patients receiving surgery within 1 year. Results for other outcomes were mixed with no differences in several measures. Further research is needed to examine the effectiveness of physical therapy relative to other nonsurgical management strategies for patients with lumbar spinal stenosis.
RCT Entities:
BACKGROUND CONTEXT: A period of nonsurgical management is advocated before surgical treatment for most patients with lumbar spinal stenosis. Currently, little evidence is available to define optimal nonsurgical management. Physical therapy is often used, however its use and effectiveness relative to other nonsurgical strategies has not been adequately explored. PURPOSE: Describe the use of physical therapy and other nonsurgical interventions by patients with lumbar spinal stenosis and examine the relationship between physical therapy and long-term prognosis. STUDY DESIGN: Secondary analysis of the Spine Patient Outcomes Research Trial (SPORT) combining data from randomized and observational studies. SETTING: Thirteen spine clinics in 11 states in the United States. PATIENT SAMPLE: Patients with lumbar spinal stenosis receiving nonsurgical management including those who did or did not receive physical therapy within 6 weeks of enrollment. OUTCOME MEASURES: Primary outcome measures included crossover to surgery, the bodily pain and physical function scales changes from the Survey Short Form 36 (SF-36), and the modified Oswestry Disability Index. Secondary outcome measures were patient satisfaction and the Sciatica Bothersomeness Index. METHODS: Baseline characteristics and rates of crossover to surgery were compared between patients who did or did not receive physical therapy. Baseline factors predictive of receiving physical therapy were examined with logistic regression. Mixed effects models were used to compare outcomes between groups at 3 and 6 months and 1 year after enrollment adjusted for baseline severity and patient characteristics. RESULTS: Physical therapy was used in the first 6 weeks by 90 of 244 patients (37%) and was predicted by the absence of radiating pain and being single instead of married. Physical therapy was associated with a reduced likelihood of crossover to surgery after 1 year (21% vs. 33%, p=.045), and greater reductions on the Short Form 36 physical functioning scale after 6 months (mean difference=6.0, 95% confidence interval: 0.2-11.7) and 1 year (mean difference=6.5, 95% confidence interval: 0.6-12.4). There were no differences in bodily pain or Oswestry scores across time. CONCLUSIONS: Many patients with lumbar spinal stenosis pursuing conservative management receive physical therapy. Using physical therapy was associated with reduced likelihood of patients receiving surgery within 1 year. Results for other outcomes were mixed with no differences in several measures. Further research is needed to examine the effectiveness of physical therapy relative to other nonsurgical management strategies for patients with lumbar spinal stenosis.
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