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BMC Musculoskeletal Disorders
Published in: BMC Musculoskeletal Disorders 1/2020

01-12-2020 | General Anesthesia | Research article

Surgical treatment of atlantoaxial subluxation by intraoperative skull traction and C1-C2 fixation

Authors: Jianwei Guo, Wencan Lu, Xiangli Ji, Xianfeng Ren, Xiaojie Tang, Zheng Zhao, Huiqiang Hu, Tao Song, Yukun Du, Jianyi Li, Cheng Shao, Tongshuai Xu, Yongming Xi

Published in: BMC Musculoskeletal Disorders | Issue 1/2020

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Abstract

Background

Atlantoaxial subluxation (AAS) is a not rare abnormality between the atlas (C1) and axis (C2). For AAS patients with persistent neck pain and neurologic symptoms, surgical intervention is a good choice. Nevertheless, there were still few reports about the use of intraoperative skull traction and different fixation methods in treatment of AAS.

Methods

From January 2012 to December 2018, a total of 86 cases were admitted to our hospital and diagnosed as AAS. All the patients received atlantoaxial reduction with the help of intraoperative skull traction and C1-C2 fixation. Clinical and radiological parameters were collected through chart review.

Results

There were 86 cases included in this study. The mean operative time was 153.9 ± 73.9 min, and the mean amount of intraoperative blood loss was 219.1 ± 195.6 ml. 81 patients underwent posterior reduction, internal fixation and fusion. 5 patients underwent anterior release, followed by posterior internal fixation and fusion. 82 patients got satisfactory postoperative outcomes while complications occurred in 4 patients. Significant neurologic improvement was observed in these patients. Bone fusion was achieved on the midline sagittal reconstructed CT images at the latest follow-up in all these patients except 1 case. All the patients were followed up for 34.84 ± 15.86 months at average (range 12–60 months). The mean ADI value was 7.55 ± 1.67 mm at average preoperatively, and improved to 4.03 ± 1.21 mm postoperatively, and to 4.21 ± 0.99 mm at the latest follow-up. The mean A-A angle was 15.48 ± 9.82 degrees at average preoperatively, and improved to 21.61 ± 10.43 degrees postoperatively, and to 19.73 ± 8.13 degrees at the latest follow-up. The mean A-A height was 35.61 ± 7.66 mm at average preoperatively, and improved to 40.08 ± 8.5 mm postoperatively, and to 38.83 ± 6.97 mm at the latest follow-up. There were complications in 4 patients, including pedicle misplacement, pedicle screw fracture, infection and one death.

Conclusion

Intraoperative skull traction can effectively facilitate the surgical procedures for ASS caused by different etiologies. Further research will be needed to investigate the safety and effectiveness of this method in the future.
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Metadata
Title
Surgical treatment of atlantoaxial subluxation by intraoperative skull traction and C1-C2 fixation
Authors
Jianwei Guo
Wencan Lu
Xiangli Ji
Xianfeng Ren
Xiaojie Tang
Zheng Zhao
Huiqiang Hu
Tao Song
Yukun Du
Jianyi Li
Cheng Shao
Tongshuai Xu
Yongming Xi
Publication date
01-12-2020
Publisher
BioMed Central
Published in
BMC Musculoskeletal Disorders / Issue 1/2020
Electronic ISSN: 1471-2474
DOI
https://doi.org/10.1186/s12891-020-03273-7

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