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Background: Assessment of the stability of the cervical spine following an injury is an important part of the diagnostic work-up. It is not always easy as the mechanism of injury does not always determine the degree of spinal stability. An actual instability is often confused with increased compensatory instability that is still within physiological limits, i. e. excessive mobility of the segment positioned above the part that has been immobilised as a result of trauma or vertebral block. Spinal injuries with instability are usually an indication for surgery. On the basis of 30 years' experience, the author presents indications for anterior approach surgery, based on the mechanism of injury and the patient's neurological status following an injury to the cervical spine.
Material And Methods: A total of 1,225 patients have been operated on. Indications are defined for surgery using rod or plate implants and compression plates. Radiographic and neurological outcome data are presented for 1138 who had been followed up for at least 6 months.
Results: A good radiographic outcome was obtained in a total of 78% patients, including 84% of the recipients of rod implants and 65% of the recipients of plate implants. Neurological improvement was seen in 68% of patients with neurological symptoms, including substantial improvements in 26% of the patients.
Conclusions: 1. Assessment of spinal stability is an important element of diagnostic work-up. 2. It is essential to distinguish actual instability requiring surgery from a compensatory increase in mobility of the segment lying above the immobilised segment of the spine. 3. An anterior approach procedure, apart from stabilising the spine, serves to decompress the spinal cord and offers a chance of neurological and functional improvement.
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