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Journal of Orthopaedic Surgery and Research

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Open Access 01-12-2022 | Periprosthetic Fracture | Research article

Femoral periprosthetic fracture treatment using the Ortho-Bridge System: a biomechanical study

Authors: Yuntao Long, Yubin Qi, Guilai Zuo, Qingjie Zhang, Zhenlin Liu, Wen Wang

Published in: Journal of Orthopaedic Surgery and Research | Issue 1/2022

Abstract

Background

We undertook a comparative biomechanical study of type B1 fractures around femoral prostheses following cemented hip arthroplasty using the Ortho-Bridge System (OBS) and a locking compression plate/locking attachment plate structure (LCP + LAP). We aimed to investigate the biomechanical characteristics and advantages of the OBS compared with LCP + LAP when treating this fracture type.

Methods

An OBS fixation model was designed based on OBS and LCP + LAP fixation characteristics. The LCP + LAP combination (Group A) and three different OBS combinations (Groups B, C, and D) were used to fix a B1 fracture model with a femoral periprosthetic fracture. Axial compression and torsion experiments were then performed using simple and comminuted fracture models. The axial compression failure experiment was carried out, and the model stiffness during axial compression, torsion angle in torsion test, and vertical load in the final failure test were collected.

Results

When simulating simple oblique fractures, no significant difference was found among the four groups in terms of stiffness in the axial compression experiment (P = 0.257). The torsion angle of the LCP + LAP system was significantly higher compared with the OBS system (P < 0.05). When simulating a comminuted fracture, the experimental data for axial compression showed that the rigidity measurements of the three combinations of the OBS system were higher compared with the LCP + LAP system (P = 0.000) and that the torsion angles of three combinations of the OBS system were smaller compared with the LCP + LAP system (P < 0.05). In the axial compression failure test, the fixed failure mode of the LCP + LAP system was the destruction of the contact cortex at the fracture site, whereas the failure modes in the three OBS combinations involved fracture around the screws above the osteotomy and destruction of the contact cortex at the fracture site.

Conclusions

The findings revealed that the OBS produced superior biomechanical outcomes compared with LCP + LAP, especially for the bridging two-rod dual cortex. According to the performance observed after model axial compression destruction, the OBS was fixed and provided greater stress dispersion, which might make it more suitable for facilitating early functional movement and avoiding the failure of internal fixation.

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Title: Femoral periprosthetic fracture treatment using the Ortho-Bridge System: a biomechanical study
Authors: Yuntao Long
Yubin Qi
Guilai Zuo
Qingjie Zhang
Zhenlin Liu
Wen Wang
Publication date: 01-12-2022
Publisher: BioMed Central
Keyword: Periprosthetic Fracture
Published in: Journal of Orthopaedic Surgery and Research / Issue 1/2022
Electronic ISSN: 1749-799X
DOI: https://doi.org/10.1186/s13018-022-03154-w

2024 ASCO Annual Meeting

Springer Medicine

Femoral periprosthetic fracture treatment using the Ortho-Bridge System: a biomechanical study

Abstract

Background

Methods

Results

Conclusions

2024 ASCO Annual Meeting

Springer Medicine

Abstract

Background

Methods

Results

Conclusions

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