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Journal of Orthopaedic Surgery and Research
Published in: Journal of Orthopaedic Surgery and Research 1/2018

Open Access 01-12-2018 | Research article

Analysis of C5 palsy in cervical myelopathy with massive anterior compression following laminoplasty

Authors: Guangdong Chen, Yifan Wang, Zhidong Wang, Ruofu Zhu, Huilin Yang, Zongping Luo

Published in: Journal of Orthopaedic Surgery and Research | Issue 1/2018

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Abstract

Background

Little data is available about comparison of the incidence and clinical characteristics of the C5 palsy between patients of cervical myelopathy with occupying ratio greater than 50% and those with occupying ratio less than 50% following laminoplasty.

Methods

One-hundred eighteen patients with cervical myelopathy who underwent open door laminoplasty were reviewed in this study. The patients were divided into two groups: group A comprising 55 patients with an anterior occupying ratio greater than 50% and group B comprising 63 patients with an anterior occupying less than 50%. Clinical and radiological outcomes were assessed between two groups.

Results

No statistically difference was found in preoperative Japanese Orthopedic Association (JOA) score of both groups (10.7 ± 1.7 in group A vs 10.9 ± 1.1 in group B, P > 0.05). Improvements in postoperative JOA score were achieved, and there was a statistical difference (14.0 ± 1.4 in group A vs 14.8 ± 0.9 in group B, P < 0.05). Group A had a lower rate of recovery than group B (P < 0.05). Totally, 12 of 118 (10.2%) patients developed the C5 palsy postoperatively. C5 palsy occurred in 3 of 63 patients in the group B compared with 9 of 55 in the group A. Statistically significant difference was found in the incidence of C5 palsy between the two groups (P < 0.05). Furthermore, patients in group A required significantly longer recovery periods than group B. Both preoperative and postoperative MRI presented more levels of T2 high-signal lesion in group A than group B. The degree of posterior shift of the cord after posterior decompression in group A was less than group B (P < 0.05).

Conclusions

Patients with a high degree of anterior compression have higher risk of C5 palsy than those with a relative low degree of anterior compression.
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Metadata
Title
Analysis of C5 palsy in cervical myelopathy with massive anterior compression following laminoplasty
Authors
Guangdong Chen
Yifan Wang
Zhidong Wang
Ruofu Zhu
Huilin Yang
Zongping Luo
Publication date
01-12-2018
Publisher
BioMed Central
Published in
Journal of Orthopaedic Surgery and Research / Issue 1/2018
Electronic ISSN: 1749-799X
DOI
https://doi.org/10.1186/s13018-018-0715-3

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