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Cervical spine injury from gunshot wounds.

OBJECT: Gunshot wounds (GSWs) to the cervical spine have been examined in a limited number of case series, and operative management of this traumatic disease has been sparsely discussed. The current literature supports and the authors hypothesize that patients without neurological deficit need neither surgical fusion nor decompression. Patients with GSWs and neurological deficits, however, pose a greater management challenge. The authors have compiled the experience of the R Adams Cowley Shock Trauma Center in Baltimore, Maryland, over the past 12 years, creating the largest series of such injuries, with a total number of 40 civilian patients needing neurosurgical evaluation. The current analysis examines presenting bone injury, surgical indication, presenting neurological examination, and neurological outcome. In this study, the authors characterize the incidence, severity, and recovery potential of cervical GSWs. The rate of unstable fractures requiring surgical intervention is documented. A detailed discussion of surgical indications with a treatment algorithm for cervical instability is offered.

METHODS: A total of 144 cervical GSWs were retrospectively reviewed. Of these injuries, 40 had documented neurological deficits. No neurosurgical consultation was requested for patients without deficit. Epidemiological and clinical information was collected on patients with neurological deficit, including age, sex, timing, indication, type of surgery, initial examination after resuscitation, follow-up examination, and imaging data.

RESULTS: Twenty-eight patients (70%) presented with complete neurological deficits and 12 patients (30%) presented with incomplete injuries. Fourteen (35%) of the 40 patients underwent neurosurgical intervention. Twelve patients (30%) required intervention for cervical instability. Seven patients required internal fixation involving 4 anterior fusions, 2 posterior fusions, and 1 combined approach. Five patients were managed with halo immobilization. Two patients underwent decompression alone for neurological deterioration and persistent compressive injury, both of whom experienced marked neurological recovery. Follow-up was obtained in 92% of cases. Three patients undergoing stabilization converted at least 1 American Spinal Injury Association (ASIA) Impairment Scale (AIS) grade and the remaining operative cases experienced small ASIA motor score improvement. Eighteen patients underwent inpatient MRI. No patient suffered complications or neurological deterioration related to retained metal. Three of 28 patients presenting with AIS Grade A improved to Grade B. For those 12 patients with incomplete injury, 1 improved from AIS Grade C to D, and 3 improved from Grade D to E.

CONCLUSIONS: Spinal cord injury from GSWs often results in severe neurological deficits. In this series, 30% of these patients with deficits required intervention for instability. This is the first series that thoroughly documents AIS improvement in this patient population. Adherence to the proposed treatment algorithm may optimize neurological outcome and spine stability.

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