Abstract
External fixation is a commonly used method in stabilizing fracture sites. The performance of the fixator depends on how it affects the mechanical properties of the fracture site and is governed by parameters like the fixator type and fixator configuration. Identifying ideal configurations prior to surgery will help surgeons in planning the procedure, limiting the possibility of complications such as non-union. In this study, a framework has been proposed as a surgical pre-planning tool, to assist surgeons compare mechanical properties of a fracture site under different fixator configurations, and thereby identify the optimum solution. A computational tool was identified as the best method for this purpose. Cost and time of computation were given special consideration to reduce complexity in clinical settings. A pilot study was conducted on a section of the proposed framework, where the aim was to understand the feasibility of implementation. In the pilot study, a unilateral uni-planar fixator on a simple diaphyseal transverse fracture was analyzed. During the pilot study the selected fixator was tested and a few models were developed to assess system stability. The models were then compared to identify the optimum model that could be used with the proposed framework. The proposed framework provided a suitable solution for the use case and out of the models developed the simplified finite element model was identified as the best option for the use case.
Highlights
Long bone fractures are commonly seen throughout the world accounting to almost half of all orthopedic fractures [1]; many due to falls and accidents, out of which road traffic accidents account to a significant segment [2]
The results showed significant improvement of stability when tightening torque was increased
The study focused on developing a fixator configuration optimization model in a manner that would be subject specific, easy to implement, especially in a developing region, while providing valuable information for surgeons
Summary
Published: 13 September 2021Long bone fractures are commonly seen throughout the world accounting to almost half of all orthopedic fractures [1]; many due to falls and accidents, out of which road traffic accidents account to a significant segment [2]. In addition to the physical discomfort and economic strain caused on the individual, fractures cause a significant socioeconomic burden to the country. This issue is further aggravated in the developing region. According to the World Health Organization the highest portion of road traffic accident victims are in the age group between 15 to 29 years, and sustain some sort of a long-standing disability [6]; motorcycle accidents being a key reason [7,8,9]
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