Acetabular fractures have a high impact on patient’s quality of life, and because acetabular fractures are high energy injuries, they often co-occur with other pathologies such as damage to cartilage that could increase related morbidity; thus, it appears of primary importance developing reliable treatments for this disease. This work aims at the evaluation of the biomechanical performances of non-conservative treatments of acetabular fractures through a finite element approach. Two pelvic plates models (the standard suprapectineal plate—SPP, and a suprapectineal quadrilateral surface buttressing plate—SQBP) were analyzed when implanted on transverse or T-shaped fractures. The plates geometries were adapted to the specific hemipelvis, mimicking the bending action that the surgeon performs on the plate intraoperatively. Implemented models were tested in a single leg stance condition. The obtained results show that using the SQBP plate in transverse and T-shaped acetabular fractures generates lower bone stress if compared to the SPP plate. Interfragmentary movement analysis shows that the SQBP plate guarantees greater stability in transverse fractures. In conclusion, the SQBP plate seems worthy of further clinical analysis, having resulted as a promising option in the treatment of transverse and T-shaped acetabular fractures, able to reduce bone stress values and to get performances comparable, and in some cases superior, to traditional fixation.

中文翻译：

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上环四边形表面支撑板的性能是否优于传统固定？有限元分析

髋臼骨折对患者的生活质量有很大影响，并且由于髋臼骨折是高能量损伤，因此常常与其他病理同时发生，例如软骨损伤，可能会增加相关的发病率。因此，开发出对该疾病可靠的治疗方法似乎至关重要。这项工作旨在通过有限元方法评估非保守治疗髋臼骨折的生物力学性能。当植入横向或T形骨折时，分析了两种骨盆板模型（标准的超镜上板SPP和超镜下四边形表面支撑板SQBP）。板的几何形状适应于特定的半骨盆，模仿外科医生在术中对板进行的弯曲动作。在单腿姿势条件下对实现的模型进行了测试。获得的结果表明，与SPP板相比，在横向和T形髋臼骨折中使用SQBP板产生的骨应力更低。碎片间运动分析表明，SQBP板保证了横向裂缝的更大稳定性。总之，SQBP钢板似乎值得进一步的临床分析，已成为治疗横断和T形髋臼骨折的有前途的选择，能够降低骨应力值并获得可比的性能，在某些情况下优于传统注视。碎片间运动分析表明，SQBP板保证了横向裂缝的更大稳定性。总之，SQBP钢板似乎值得进一步的临床分析，已成为治疗横断和T形髋臼骨折的有前途的选择，能够降低骨应力值并获得可比的性能，在某些情况下优于传统注视。碎片间运动分析表明，SQBP板保证了横向裂缝的更大稳定性。总之，SQBP钢板似乎值得进一步的临床分析，已成为治疗横断和T形髋臼骨折的有前途的选择，能够降低骨应力值并获得可比的性能，在某些情况下优于传统注视。