Abstract
1. Evidence is presented that certain types of cervical spine injury are due mainly to lateral flexion forces.
2. These injuries are often complicated by a brachial plexus lesion as well as a lesion of the spinal cord.
3. It is not always easy to detect the brachial plexus injury when the patient is first seen.
4. In the cases reviewed there has been little or no recovery of cord function, and the existence of a brachial plexus injury has, of course, made rehabilitation much more difficult.
5. The practical importance of recognising the mechanism of this type of injury is that treatment which will cause further separation of the vertebrae is inadvisable.