In a whiplash injury, various neck muscles can sustain damage. The specific muscles that are affected can differ depending on the individual and the circumstances of the accident.    Whiplash commonly involves injury to muscles such as the sternocleidomastoid, which is located on the sides of the neck and assists with head rotation and flexion.    Additionally, the trapezius muscle, extending from the neck to the upper back and shoulders, is often affected due to its involvement in neck and shoulder movement. The deep splenius muscles at the back of the neck, the levator scapulae connecting the neck to the shoulder blades, and the scalene muscles on the sides of the neck may also experience strain or injury during whiplash incidents.    It's important to recognize that whiplash injuries can vary in their severity, and multiple neck muscles may be impacted. Furthermore, other structures such as ligaments, tendons, and discs in the neck may also be affected.