The effect of early weight-bearing on bone fusion after triple arthrodesis

Qingwei Yang, Chunlong Shan, Bo Zhao, Wei Liu and Jizhe Hai

Computer Methods in Biomechanics and Biomedical Engineering, 2025, vol. 28, issue 4, 419-429

Abstract: Triple arthrodesis is an effective method for treating stiff horseshoe feet and severe osteoarthritis. However, it is still a challenge to improve postoperative bone fusion by changing early weight-bearing. This study improved the classical bone remodeling algorithm, established a mathematical relationship between density change rate and mechanical stimulation, and combined it with finite element theory. The proposed algorithm can not only predict the effect of early weight-bearing on triple arthrodesis but also visually demonstrate the change of bone mineral density with time. The analysis results indicated that 2.5% of the initial load was a potential factor leading to bone nonunion, and 50% of the initial load would result in bone resorption. Meanwhile, it was found that 25% of the external load was more conducive to postoperative rehabilitation. The study results have theoretical significance for enhancing the effect of postoperative bone fusion and formulating a more scientific rehabilitation program, thereby supporting patients’ postoperative rehabilitation exercise.

Date: 2025
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DOI: 10.1080/10255842.2023.2293646

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