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Journal of Orthopaedic Surgery and Research

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Open Access 01-12-2019 | Hip Dysplasia | Research article

Development of a novel customized cutting and rotating template for Bernese periacetabular osteotomy

Authors: Xuyi Wang, Shixian Liu, Jianping Peng, Zhonglian Zhu, Linlin Zhang, Jianzhong Guan, Xiaodong Chen

Published in: Journal of Orthopaedic Surgery and Research | Issue 1/2019

Abstract

Background

Bernese periacetabular osteotomy (PAO) has been shown to be applicable as a hip-preserving technique for the treatment of developmental dysplasia of the hip (DDH). The approach could be designed preoperatively using various types of reverse-engineering software and finite element analysis, but how to implement it in the actual PAO remains a challenge. This study examines and evaluates a solution to achieve higher accuracy when performing a PAO.

Methods

A patient-specific cutting and rotating template was predesigned through computer-aided design (CAD) with three-dimensional (3D) modeling programs. The templates were then reproduced with rapid prototyping (RP) technology and used in the actual PAO. Finally, the clinical and radiographic effects were assessed and compared between the newly developed PAO and conventional PAO groups.

Results

The customized cutting template fit well with the bone surface and served as a guide for surgeons as they slid the osteotome to the precise location that had been determined prior to surgery. A very similar acetabular fragment was reproduced, and no major complications occurred when performing the osteotomy along the edge of the cutting template. The acetabular fragment was then corrected to the predetermined position through one-off manipulation with the customized rotating template. The final position of the acetabular fragment in the new developed PAO group was highly consistent with the planned position, and the postoperative morphological parameters were consistent with the preoperative planned data compared to the conventional PAO group. The duration of the operation and the number of irradiation decreased significantly. The Harris hip score (HHS) and visual analogue scale (VAS) score improved significantly with the use of the new developed PAO.

Conclusions

We demonstrate that our system, which was based on CAD-RP technology, is feasible and could realize the predicted results accurately during the actual PAO.

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Title: Development of a novel customized cutting and rotating template for Bernese periacetabular osteotomy
Authors: Xuyi Wang
Shixian Liu
Jianping Peng
Zhonglian Zhu
Linlin Zhang
Jianzhong Guan
Xiaodong Chen
Publication date: 01-12-2019
Publisher: BioMed Central
Keywords: Hip Dysplasia
Computer Aided Design
Published in: Journal of Orthopaedic Surgery and Research / Issue 1/2019
Electronic ISSN: 1749-799X
DOI: https://doi.org/10.1186/s13018-019-1267-x

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Development of a novel customized cutting and rotating template for Bernese periacetabular osteotomy

Abstract

Background

Methods

Results

Conclusions

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Abstract

Background

Methods

Results

Conclusions

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