In Vivo Quantification of Cervical Collar Efficacy

This is a prospective interventional trial with healthy volunteers at Methodist Dallas Medical Center. We anticipate data collection to be completed by December 2023. All study participants will be consented regardless of their role as healthy C-spine volunteer or provider volunteer (Appendix C). No compensation will be provided. Provider volunteers will be classified as:

• Attending
• Resident
• Physician assistant, nurse practitioner, or nurse
• EMS/Paramedic
• Other, as determined by job functions in pre-assessment Prior to placing C-collars, provider volunteers who will be placing C-collars will answer a questionnaire about their medical experience, their current position, their confidence in effective C-collar placement, and if they had formal C-collar training (Appendix D).

Healthy C-spine volunteers will lie supine. Cameras will be placed directly superior, anterior, and lateral to the volunteer's head. C-spine volunteers will be asked to actively move their head to the maximal flexion, extension, bilateral rotation, and bilateral side bending to assess baseline ROM.

Provider volunteers will individually place a C-collar on the C-spine volunteer's neck. They will have a range of sizes to choose from or adjustable units as applicable. The provider volunteer will be able to independently select and adjust a collar to best fit the C-spine volunteer.

The C-spine volunteer will then actively move their head to the maximal flexion, extension, bilateral rotation, and bilateral side bending with the C-collar on. ROM will be analyzed from video taken. This process will be repeated for each C-spine volunteer and each provider volunteer (Minimum 3 volunteers per 1 provider volunteer).