Purpose To compare the clinical and radiological outcomes between skipped-level and all-level plating for cervical laminoplasty. Methods Patients with cervical spondylotic myelopathy (CSM) treated by open-door laminoplasty with minimum 2-year postoperative follow-up were included. All patients had opening from C3–6 or C3–7 and were divided into skipped-level or all-level plating groups. Japanese Orthopaedic Association (JOA) scores and canal measurements were obtained preopera- tively, immediate (within 1 week) postoperatively, and at 2, 6 weeks, 3, 6 and 12 months postoperatively. Paired t test was used for comparative analysis. Receiver operating characteristic analysis was used to determine the canal expansion cutoff for spring-back closure. Results A total of 74 subjects were included with mean age of 66.1 ± 11.3 years at surgery. Of these, 32 underwent skipped- level plating and 42 underwent all-level plating. No significant differences were noted between the two groups at baseline and follow-up. Spring-back closure was observed in up to 50% of the non-plated levels within 3 months postoperatively. The cutoff for developing spring-back closure was 7 mm canal expansion for C3–6. No differences were observed in JOA scores and recovery rates between the two groups. None of the patients with spring-back required reoperation. Conclusions There were no significant differences between skipped-level and all-level plating
European Spine Journal – Springer Journals
Published: Feb 28, 2018
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