title: Spine kinematics predict symptom and lost time recurrence: how much recovery is enough?
abstract: OBJECTIVE
  The purpose of the study was to determine thresholds for low back kinematic measures for the amount of functional recovery necessary to reduce the risk of recurrent pain symptoms or lost time.
  
  
  METHODS
  Low back kinematic ability measures were collected at baseline when the workers returned to work for full duty. The range of motion, velocity, and acceleration were collected using the lumbar motion monitor.
  
  
  RESULTS
  Follow-up data was collected on 196 of the 206 workers. Workers with sagittal extension velocity of <40 deg./s at baseline were twice as likely to report recurrent low back pain symptoms. Workers with sagittal flexion velocity <34 deg./s were 3 times more likely to report lost time.
  
  
  CONCLUSIONS
  Kinematic functional performance measures may be used as recovery criteria in low back pain patients to minimize recurrence risk.
authors.affiliation: Biodynamic Laboratory, Department of Integrated Systems Engineering, The Ohio State University, 210 Baker Systems, 1971 Neil Avenue, Columbus, OH 43210, USA. ferguson.4@osu.edu
authors.forename: Sue A
authors.initials: SA
authors.lastname: Ferguson
authors.forename: William S
authors.initials: WS
authors.lastname: Marras
mesh_terms: D000328:Adult; D001696:Biomechanical Phenomena; D005260:Female; D006801:Humans; D016015:Logistic Models; D017116:Low Back Pain / Q000503:physiopathology / Q000534:rehabilitation*; D008159:Lumbar Vertebrae / Q000503:physiopathology*; D008297:Male; D016017:Odds Ratio; D011446:Prospective Studies; D020127:Recovery of Function; D062707:Return to Work; D055502:Secondary Prevention; D014481:United States; D014938:Work Capacity Evaluation