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Erschienen in: International Orthopaedics 9/2018

16.03.2018 | Original Paper

Improved accuracy of screw implantation could decrease the incidence of post-operative hydrothorax? O-arm navigation vs. free-hand in thoracic spinal deformity correction surgery

verfasst von: Zhihui Zhao, Zhen Liu, Zongshan Hu, Changchun Tseng, Jie Li, Wei Pan, Yong Qiu, Zezhang Zhu

Erschienen in: International Orthopaedics | Ausgabe 9/2018

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Abstract

Purpose

The purpose of this study was to analyze the occurrence of PE after intra-operative O-arm navigation-assisted surgery and determine whether the post-operative PE incidence could be decreased by using O-arm navigation as compared to conventional free-hand technique.

Methods

A cohort of 27 patients with spinal deformity who were operated upon with an O-arm navigated system (group A) between 2013 and 2016 were enrolled in the study. A total of 27 curve-matched patients treated by conventional free-hand technique were included as the control group (group B). Whole spine posterior-anterior and lateral radiographs, and CT scans were taken pre and post-operation. Radiologic parameters and volume of PE were measured and compared between the two groups.

Results

There were no significant differences in age, Cobb angle, and sagittal contour between the two groups pre-operatively. The mean total volume of post-operative PE was significantly larger in the free-hand group (p < 0.001). In the O-arm group, 59 malpositioned screws were identified in 22 patients. In the free-hand group, 88 malpositioned screws were found among 26 patients. The screw perforation rate was higher in the free-hand group than in the O-arm group (p = 0.007). In the O-arm group, the mean volume of PE was significantly larger among patients with malpositioned screws than those without malpositioned screws (p < 0.001), as well as in the free-hand group.

Conclusion

The volume of PE after correction surgery can be significantly decreased by application of O-arm navigation system as compared to conventional free-hand technique. We ascribed the improvement to the accuracy of screw implantation navigated by O-arm.
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Metadaten
Titel
Improved accuracy of screw implantation could decrease the incidence of post-operative hydrothorax? O-arm navigation vs. free-hand in thoracic spinal deformity correction surgery
verfasst von
Zhihui Zhao
Zhen Liu
Zongshan Hu
Changchun Tseng
Jie Li
Wei Pan
Yong Qiu
Zezhang Zhu
Publikationsdatum
16.03.2018
Verlag
Springer Berlin Heidelberg
Erschienen in
International Orthopaedics / Ausgabe 9/2018
Print ISSN: 0341-2695
Elektronische ISSN: 1432-5195
DOI
https://doi.org/10.1007/s00264-018-3889-8

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