title: Outcomes after a prone lumbar traction protocol for patients with activity-limiting low back pain: a prospective case series study.
abstract: OBJECTIVE
  To determine outcomes after administration of a prone lumbar traction protocol.
  
  
  METHODS
  Prospective, longitudinal, case series.
  
  
  METHODS
  Suburban, chiropractic practice.
  
  
  METHODS
  A total of 296 subjects with low back pain (LBP) and evidence of a degenerative and/or herniated intervertebral disk at 1 or more levels of the lumbar spine. We excluded patients involved in litigation and those receiving workers' compensation.
  
  
  METHODS
  An 8-week course of prone lumbar traction, using the vertebral axial decompression (VAX-D) system, consisting of five 30-minute sessions a week for 4 weeks, followed by one 30-minute session a week for 4 additional weeks.
  
  
  METHODS
  The numeric pain rating scale and the Roland-Morris Disability Questionnaire (RMDQ) were completed at preintervention, discharge (within 2 weeks of the last visit), and at 30 days and 180 days after discharge. Intention-to-treat strategies were used to account for those subjects lost to follow-up.
  
  
  RESULTS
  A total of 250 (84.4%) subjects completed the treatment protocol. On the 30-day follow-up, 247 (83.4%) subjects were available; on the 180-day follow-up, data were available for 241 (81.4%) subjects. We noted significant improvements for all postintervention outcome scores when compared with preintervention scores (P<.01).
  
  
  CONCLUSIONS
  Traction applied in the prone position using the VAX-D for 8 weeks was associated with improvements in pain intensity and RMDQ scores at discharge, and at 30 and 180 days after discharge in a sample of patients with activity-limiting LBP. Causal relationships between these outcomes and the intervention should not be made until further study is performed using randomized comparison groups.
authors.affiliation: Program in Physical Therapy, Department of Exercise Science, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA. pbeattie@gwm.sc.edu
authors.forename: Paul F
authors.initials: PF
authors.lastname: Beattie
authors.forename: Roger M
authors.initials: RM
authors.lastname: Nelson
authors.forename: Lori A
authors.initials: LA
authors.lastname: Michener
authors.forename: Joseph
authors.initials: J
authors.lastname: Cammarata
authors.forename: Jonathan
authors.initials: J
authors.lastname: Donley
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D017116:Low Back Pain / Q000503:physiopathology / Q000534:rehabilitation*; D008159:Lumbar Vertebrae; D008297:Male; D020393:Manipulation, Spinal; D010147:Pain Measurement; D016684:Prone Position; D011446:Prospective Studies; D014143:Traction / Q000379:methods*; D016896:Treatment Outcome