Foam collars
The neck and head were frequently kept still after a whiplash injury using soft foam cervical collars. On the other hand, keeping the neck still for long periods has been shown in studies to reduce muscle strength and interfere with recovery.
Therefore, your physiotherapist can advise you on how to use the collar correctly and for how long. However, recommendations for using a collar differ. Some experts recommend limiting use to 72 hours, while others say it’s worn for up to three hours per day for a few weeks. Still, using a collar to limit movement may help reduce pain and help you sleep the night after your injury.