Abstract
Both posterior decompression and fusion (PDF) and laminoplasty (LAMP) have been used to treat cervical myelopathy due to multilevel ossification of posterior longitudinal ligament (OPLL). However, considerable controversy exists over the choice of the two surgical strategies. Thus, the aim of this study is to compare clinical outcomes of PDF and LAMP for treatment of cervical myelopathy due to multilevel OPLL. We searched PubMed, EMBASE and Cochrane Central Register of Controlled Trials database to identify relevant clinical studies compared with clinical outcomes of PDF and LAMP for cervical OPLL. The primary outcomes including Japanese Orthopaedic Association (JOA) score and recovery rate of JOA were evaluated, and the secondary outcomes involving visual analogue scale (VAS), cervical curvature, OPLL progression rate, complication rate, reoperation rate and surgical trauma were also evaluated using Stata software. A total of nine studies were included in the current study, involving 324 patients. The current study suggests that compared with LAMP, PDF achieves a lower OPLL progression rate, better postoperative cervical curvature and similar neurological improvement in the treatment of multilevel cervical OPLL. However, PDF has a higher complication rate, more surgical trauma and higher postoperative VAS than LAMP.
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Funding
This study was supported by grants from the National Natural Science Foundation of China (Nos. 81874027, 31970862) and Guangzhou Municipal Science and Technology project (Nos. 201803010001).
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Investigation performed at the Department of Spinal Surgery, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, People’s Republic of China.
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Appendix 1
The forest plot shows the sensitive analysis of preoperative C2-C7 Cobb angle. The size of the squares reflects the weight of the trial in pooled analysis. The horizontal bars represent the 95% CI. SMD = standardized mean difference. PDF = posterior decompression and fusion. LAMP = laminoplasty. (PNG 303 kb)
Appendix 2
The forest plot shows the sensitive analysis of postoperative JOA score. The size of the squares reflects the weight of the trial in pooled analysis. The horizontal bars represent the 95% CI. SMD= standardized mean difference. PDF = posterior decompression and fusion. LAMP = laminoplasty. JOA= Japanese Orthopaedic Association. (PNG 369 kb)
Appendix 3
The forest plot shows the sensitive analysis of postoperative C2-C7 Cobb angle. The size of the squares reflects the weight of the trial in pooled analysis. The horizontal bars represent the 95% CI. SMD = standardized mean difference. PDF = posterior decompression and fusion. LAMP = laminoplasty. (PNG 240 kb)
Appendix 4
The forest plot shows the sensitive analysis of recovery rate. The size of the squares reflects the weight of the trial in pooled analysis. The horizontal bars represent the 95% CI. SMD = standardized mean difference. PDF = posterior decompression and fusion. LAMP = laminoplasty. (PNG 244 kb)
Appendix 5
The forest plot shows the sensitive analysis of operation time. The size of the squares reflects the weight of the trial in pooled analysis. The horizontal bars represent the 95% CI. SMD = standardized mean difference. PDF = posterior decompression and fusion. LAMP = laminoplasty. (PNG 267 kb)
Appendix 6
The forest plot shows the sensitive analysis of blood loss. The size of the squares reflects the weight of the trial in pooled analysis. The horizontal bars represent the 95% CI. SMD = standardized mean difference. PDF = posterior decompression and fusion. LAMP = laminoplasty. (PNG 315 kb)
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Xu, P., Sun, GD., Xun, L. et al. Posterior decompression and fusion versus laminoplasty for cervical ossification of posterior longitudinal ligament: a systematic review and meta-analysis. Neurosurg Rev 44, 1457–1469 (2021). https://doi.org/10.1007/s10143-020-01317-z
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DOI: https://doi.org/10.1007/s10143-020-01317-z