Related Experiment Video
Updated: Jul 31, 2026
A Novel Vertebral Stabilization Method for Producing Contusive Spinal Cord Injury
Published on: January 5, 2015
Comparison of two new immobilization collars
P B Rosen1, N E McSwain, M Arata
1Tulane University Medical Center, Emergency Department, New Orleans, LA.
Study Objective:
To evaluate the limitation of movement of four cervical collars, with emphasis on two new extrication collars.
Design:
Ranges of motion permitted by four extrication collars, measured by two goniometric techniques, were compared. Times required to apply each collar were noted and compared.
Setting:
In a laboratory setting, volunteers were asked to flex, extend, laterally bend, and rotate their necks, first without restriction and then with each of the collars applied.
Type Of Participants:
Participants were healthy volunteers who worked either in the Department of Physical Therapy or in the Emergency Department of Tulane Medical Center Hospital.
Interventions:
The collars used were the Nec-Loc Extrication Collar, Philadelphia Collar, Philadelphia Red EM Collar with Immobilizer, and Vacuum Splint Cervical Collar.
Measurements:
Measurements were performed first using the head goniometer and then the hand-held goniometer. Time required for application was measured in seconds. Statistical evaluation was performed using repeated measure analysis of variance and then Newman-Keuls multiple comparison procedure.
Main Results:
The Vacuum Splint Cervical Collar restricted range of motion of the cervical spine most effectively.
Conclusion:
A cervical collar with design characteristics similar to the Vacuum Splint Cervical Collar (ie, a rigid collar that incorporates part of the thorax) will restrict movement of the neck more effectively than shorter, less rigid collars.
