Abstract

INTRODUCTION: With advancements in technology, the safety and efficacy of cervical laminoplasty have increased, leading to a reduction in complications frequently associated with posterior cervical surgical approaches, including C5 nerve palsy, axial neck pain, loss of lordosis, and loss of motion. However, the impact of these advancements on cervical radiographic parameters remains poorly documented, and the prevalence of complications in North American populations has not been adequately studied. METHODS: We evaluated patients undergoing cervical laminoplasty between 2011 to 2022 at an academic medical center. Patient demographics, intraoperative and postoperative complications, preoperative and post-operative radiographic parameters were recorded. RESULTS: 150 patients undergoing cervical laminoplasty during this study period were identified. 105 patients met the inclusion criteria. We identified a total of 22 (21.0%) adverse events in 20 patients. There were 4 intra-operative (3.8%), 10 peri-operative (9.5%), and 8 delayed post-operative (7.6%) adverse events. Amongst them, 13 (12.4%) were judged to be minor and 9 (8.6%) were judged to be major complications. Six (5.7%) patients required revision surgery. Forty-seven (44.8%) of the 105 patients had both pre-and post-operative cervical spine radiographic imaging. The average pre-and post-op C2-7 cobb angles were 14.7 degrees and 12.3 degrees (p-value of 0.04). The pre-and post-op SVA was 29.2 mm and 33.3 mm (p-value of 0.07). The pre-op and post-op T1 slopes were 32.3 and 30.2 deg (p-value of 0.07). CONCLUSIONS: Cervical laminoplasty carries a significant risk of adverse events, the majority of which are minor and has a low rate of re-operation (5.7%). The procedure does not result in significant changes in SVA or T1 slope. Cervical laminoplasty remains a valuable surgical option for selected patients with cervical myelopathy.

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