title: Criterion validity study of the cervical range of motion (CROM) device for rotational range of motion on healthy adults.
abstract: METHODS
  This study compared range of motion (ROM) measurements using a cervical range of motion device (CROM) and an optoelectronic system (OPTOTRAK).
  
  
  OBJECTIVE
  To examine the criterion validity of the CROM for the measurement of cervical ROM on healthy adults.
  
  
  BACKGROUND
  Whereas measurements of cervical ROM are recognized as part of the assessment of patients with neck pain, few devices are available in clinical settings. Two papers published previously showed excellent criterion validity for measurements of cervical flexion/extension and lateral flexion using the CROM.
  
  
  METHODS
  Subjects performed neck rotation, flexion/extension, and lateral flexion while sitting on a wooden chair. The ROM values were measured by the CROM as well as the OPTOTRAK.
  
  
  RESULTS
  The cervical rotational ROM values using the CROM demonstrated a good to excellent linear relationship with those using the OPTOTRAK: right rotation, r = 0.89 (95% confidence interval, 0.81-0.94), and left rotation, r = 0.94 (95% confidence interval, 0.90-0.97). Similar results were also obtained for flexion/extension and lateral flexion ROM values.
  
  
  CONCLUSIONS
  The CROM showed excellent criterion validity for measurements of cervical rotation. We propose using ROM values measured by the CROM as outcome measures for patients with neck pain.
authors: Research Center on Aging, Sherbrooke Geriatric University Institute, Faculty of Medicine, Québec, Canada. michel.tousignant@usherbooke.ca
authors: Michel
authors: M
authors: Tousignant
authors: Cécil
authors: C
authors: Smeesters
authors: Anne-Marie
authors: AM
authors: Breton
authors: Emilie
authors: E
authors: Breton
authors: Hélène
authors: H
authors: Corriveau