Posterior surgical treatment of ankylosing spondylitis with spinal tuberculosis: A case series and long-term follow-up

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Abstract

This retrospective cohort study aimed to evaluate the clinical outcomes of posterior surgical treatment of ankylosing spondylitis (AS) with spinal tuberculosis (STB). This was a retrospective study including 12 patients treated between January 2004 and April 2014 for AS with STB at our department. All patients underwent 1-stage posterior internal fixation, debridement, and bone fusion. The patients were evaluated based on the American Spinal Injury Association (ASIA), kyphotic Cobb angle, and the visual analog score (VAS). All patients were followed up for an average of 42.7 ± 13.2 months after surgery and bone fusion was achieved 6.8 ± 1.3 months. According to ASIA, 2 cases were rated as Grade D, 10 cases were Grade E at last follow-up. The average preoperative Cobb angle was 26.7 ± 7.6° (range 15–36) and the average postoperative Cobb angle was 7.8 ± 1.2° (range 6–9). The mean latest follow-up Cobb angle was 9.1 ± 1.0° (range 6–10). Compared with the average preoperative Cobb angle, there were significant differences regarding the kyphotic Cobb angle measured postoperatively and at final follow-up (P < .05). The VAS significantly was considerably improved between the preoperative and the last clinical visits. These positive results demonstrate that 1-stage surgical treatment for AS with STB by posterior debridement, fusion, and instrumentation can be an effective and feasible treatment method for this specific condition. It should be noted that it is necessary to carry out antiosteoporosis treatment and perform long-segmental instrumentation in order to obtain spinal stabilization.

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