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  • Title: Cervical spine fracture-dislocation in patients with ankylosing spondylitis and severe thoracic kyphosis: Application of halo vest before and during surgical management.
    Author: Yang H, Wang H, Zhang B, Sun Y, Wang L, Lu X.
    Journal: Clin Neurol Neurosurg; 2021 Aug; 207():106744. PubMed ID: 34119897.
    Abstract:
    Cervical spine fracture-dislocation in patients with ankylosing spondylitis (AS) and severe thoracic kyphosis is extremely unstable. This study was performed to investigate the efficacy and safety of halo vest application before and during surgery for these patients. We retrospectively analyzed the case histories, operations, neurologic outcomes, follow-up data, and imaging records of 25 patients with AS and severe thoracic kyphosis who underwent surgical treatment of cervical fracture-dislocation in our department from 2008 to 2019. A halo vest was used to reduce and immobilize the fractured spinal column ends before and during surgery. The neurologic injury was evaluated using the American Spinal Injury Association (ASIA) impairment scale score, visual analog scale (VAS) score, and Japanese Orthopaedic Association (JOA) score before and after the operation. Twenty-two patients achieved closed anatomical reduction; two achieved successful reduction and one underwent failed reduction after halo vest application. No fracture site displacement occurred after movement into the prone position. No patients developed secondary neurological deterioration. The mean Cobb angle of thoracic kyphosis was 69.0° ± 12.3°. All patients underwent posterior or combined anterior-posterior surgery. The ASIA grade improved significantly (P < 0.01). The mean VAS and JOA scores also increased significantly after the operation (14.6 ± 3.0 vs. 10.4 ± 4.3 and 0.5 ± 0.6 vs. 4.6 ± 1.9, respectively; P < 0.01). One patient died 3 weeks after the operation. No other severe complications occurred. All patients had reached solid bony fusion by the 12-month follow-up. Use of a halo vest before and during the operation is safe and effective in patients with AS and severe thoracic kyphosis who develop cervical fracture-dislocation. This technique makes positioning, awake nasoendotracheal intubation, nursing, and the operation more convenient. It can also provide satisfactory reduction and rigid immobilization and prevent secondary neurologic deterioration.
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