NDLI: Impact of cervical and global spine sagittal alignment on cervical curvature changes after posterior cervical laminoplasty

Content Provider	Springer Nature : BioMed Central
Author	Li, Xiang-Yu Wang, Yu Zhu, Wei-Guo Kong, Chao Lu, Shi-Bao
Abstract	Objective To analyze the correlation between the changes in cervical curvature and the sagittal parameters of spino-pelvic and clinical efficacy after posterior laminoplasty (LP). Methods The patients with cervical spondylosis treated with LP from June 2018 to December 2020 were reviewed. The preoperative and follow-up spine full-length films were measured. The measured data included C2–C7 Cobb angle, C2–7 sagittal vertical axis (SVA), T1 slope (T1S), pelvic incidence, sacral slope (SS), pelvic tilt (PT), lumbar lordosis (LL), thoracic kyphosis (TK), and C7-SVA. Japanese Orthopaedic Association (JOA) score and neck disability index (NDI) score were recorded before surgery and follow-up. Results There were 56 patients in this study. There were no significant differences in spino-pelvic sagittal parameters before and after surgery; however, the JOA score significantly improved. The changes in postoperative cervical lordosis correlated with SS, PT, LL, T1S, and C7-SVA (P < 0.05). Regression analysis showed that T1S and C7-SVA were associated with reducing cervical lordosis (P = 0.021 and P = 0.001, respectively). Patients with larger T1S combined with larger C7-SVA had more cervical lordosis loss, poor JOA improvement, and high postoperative NDI scores (P < 0.001, P = 0.018, and P < 0.001, respectively). Conclusion Patients should be examined with full-length spine film before surgery to evaluate the cervical and spino-pelvic sagittal balance. T1S and C7-SVA correlated with changes in cervical sagittal alignment after LP. Level of evidence III.
Related Links	https://josr-online.biomedcentral.com/counter/pdf/10.1186/s13018-022-03421-w.pdf
Ending Page	9
Page Count	9
Starting Page	1
File Format	HTM / HTML
DOI	10.1186/s13018-022-03421-w
Journal	Journal of Orthopaedic Surgery and Research
Issue Number	1
Volume Number	17
Language	English
Publisher	BioMed Central
Publisher Date	2022-12-02
Access Restriction	Open
Subject Keyword	Orthopedics Surgical Orthopedics Spino-pelvic sagittal balance Cervical sagittal alignment Laminoplasty
Content Type	Text
Resource Type	Article
Subject	Surgery Orthopedics and Sports Medicine
Journal Impact Factor	2.8/2023
5-Year Journal Impact Factor	3/2023

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