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Published in: BMC Surgery 1/2022

Open Access 01-12-2022 | Bone Defect | Research

Efficacy comparison of trifocal bone transport using unilateral external fixator for femoral and tibial bone defects caused by infection

Authors: Kai Liu, Yanshi Liu, Feiyu Cai, Chenchen Fan, Peng Ren, Aihemaitijiang Yusufu

Published in: BMC Surgery | Issue 1/2022

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Abstract

Background

This study aimed to evaluate the clinical and functional outcomes of patients with femoral and tibial critical-sized bone defect (CSBD) treated by trifocal bone transport using the Ilizarov method.

Methods

From March 2011 and January 2017, clinical and radiographic data of patients with CSBD (> 6 cm) caused by infection were documented and analyzed. Patients were divided into the femur group (n = 18) and tibia groups (n = 21) according to the location of bone transport. The bone and functional outcomes were evaluated according to the Association for the Study and Application of the Method of the Ilizarov (ASAMI) criterion, and postoperative complications were evaluated by Paley classification.

Results

A total of 39 patients were managed by the trifocal bone transport for the femur (n = 18) or tibia (n = 21) bone defects with a mean follow-up time of 26.1 months (range 17–34 months). Eighteen femurs and 21 tibias with a mean distraction regenerate length (DRL) of 8.3 cm (range 6–13 cm) and 7.5 cm (range 6–11 cm) respectively. Infection was eradicated in all patients, and the total bone union was received in all cases (100%). Statistical difference of bone grade (excellent/good/fair/poor, 3/11/3/1 vs 2/13/4/2, P < 0.05), and function grade (excellent/good/fair/poor, 3/14/1/0 vs 4/13/3/1, P < 0.05) were respectively observed between the femur group and tibia group. The excellent and good rate of bone (femur vs tibia, 77.8% vs 71.4%), and function grade (femur vs tibia, 94.4% vs 80.9%) was higher in the femur group than the tibia. The rate of complication in the femur group was lower than in the tibia (femur vs tibia, 94.4% vs 76.2%). One femur and five tibias were performed additional surgery for delayed union and axial deviation.

Conclusions

The trifocal bone transport using the unilateral external fixator was a practical method in the management of CSBD in the lower extremity. The BUT and EFI of the femur group were shorter than the tibia. Although the complications noted were more frequent on the femur, these were mostly minor.
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Metadata
Title
Efficacy comparison of trifocal bone transport using unilateral external fixator for femoral and tibial bone defects caused by infection
Authors
Kai Liu
Yanshi Liu
Feiyu Cai
Chenchen Fan
Peng Ren
Aihemaitijiang Yusufu
Publication date
01-12-2022
Publisher
BioMed Central
Published in
BMC Surgery / Issue 1/2022
Electronic ISSN: 1471-2482
DOI
https://doi.org/10.1186/s12893-022-01586-z

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