Hyperextension soft tissue injuries of the cervical spine--a review.

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Abstract
While a full understanding of continuing symptoms following a soft tissue hyperextension injury of the cervical spine remains elusive, recent research has shown that the explanation may lie with occult lesions beyond the musculoskeletal structures of the neck. The balance of the roles of injury, psychological factors, and the effects of litigation has shifted towards the former. However this injury would be unique if the latter two played only a minor role in determining recovery. It seems likely that among the large numbers of patients presenting with symptoms after hyperextension soft tissue injuries, a proportion will have occult bone, joint, or intervertebral disc lesions. Improvements in medical imaging techniques may allow better definition of these specific injuries and the development of more appropriate treatment. The search for a central nervous system lesion in humans continues and until this is demonstrated, many will dispute the existence of an organic brain syndrome. Evidence for significant injury to the temporomandibular joints, ear, and ophthalmic system has been found and this may be amenable to specialist intervention. While there is little evidence for effective treatments of the established injury, reduction in related disability appears most likely to be achieved by prevention. Improvements in automobile design, with particular reference to head restraints, could limit the cost to society of this common and disabling injury.