Posterior cervical open-door expansive laminoplasty with mini-titanium plate: correlation between cervical sagittal alignment and repair effect

doi:10.3969/j.issn.2095-4344.2016.44.005

Abstract

Abstract:

BACKGROUND: Posterior cervical open-door expansive laminoplasty is one of the simple and effective methods to treat cervical spinal diseases, has satisfactory results but low complications. However, the imbalance of sagittal plan, loss of lordosis or axial pain is often reported recently.

OBJECTVE: To analyze the correlation between cervical sagittal alignment and clinical outcomes after laminoplasty.

METHODS: Between January 2011 and June 2015, 122 cases of cervical spinal disease, who were treated with open-door expansive laminoplasty with mini-titanium plate, were retrospectively analyzed. Clinical outcomes were evaluated by Japanese Orthopaedic Association, Neck Disability Index and Visual Analogue Scale. Radiographic results were assessed by C_2-7 Cobb angle, C_2-7 sagittal vertical axis and C₇ slope. The correlation between sagittal alignment and clinical outcomes were analyzed.

RESULTS AND CONCLUSION: (1) All patients were followed up for 7-32 months. (2) Japanese Orthopaedic Association, Neck Disability Index and Visual Analogue Scale scores were improved in the final follow-up (all P < 0.001). No significant difference in upper limb Visual Analogue Scale scores was determined (P=0.142). In the final follow-up, C_2-7 sagittal vertical axis increased (P=0.036), but neither the C_2-7 Cobb angle nor the C₇ slope significantly changed (P=0.092, P=0.184). (3) There were no correlations between sagittal alignment parameters (C_2-7 Cobb angle, C_2-7 sagittal vertical axis and C₇ slope) and clinical outcomes (Japanese Orthopaedic Association, Neck Disability Index and Visual Analogue Scale) (all P > 0.05). (4) These findings indicated that posterior cervical open-door expansive laminoplasty with mini-titanium plate can significantly improve the neurological function of patients. However, there is no correlation between cervical sagittal alignment and clinical outcomes.

中国组织工程研究杂志出版内容重点：人工关节；骨植入物；脊柱；骨折；内固定；数字化骨科；组织工程

Key words: Cervical Vertebrae, Vertebroplasty, Postoperative Complications, Tissue Engineering

CLC Number:

R318

Gu Yong, Wang Qiang, Xin Tian-wen, Yang Hui-lin, Chen Liang . Posterior cervical open-door expansive laminoplasty with mini-titanium plate: correlation between cervical sagittal alignment and repair effect[J]. Chinese Journal of Tissue Engineering Research, 2016, 20(44): 6570-6576.

Figures/Tables 3

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