Chronic Diseases Prevention Review 2025, 9 (33), 1-12;
https://doi.org/10.54762/cdpr2025-33.1-12 (registering DOI)
- 25 Jun. 2025
Abstract
: This study aims to evaluate the mechanical strength and fixation performance of clover-shaped intramedullary nails combined with bone cement in porcine models of femoral metastatic tumors located at the subtrochanteric, midshaft, and supracondylar regions. [...] Read more.
: This study aims to evaluate the mechanical strength and fixation performance of clover-shaped intramedullary nails combined with bone cement in porcine models of femoral metastatic tumors located at the subtrochanteric, midshaft, and supracondylar regions. Thirty-six pairs of fresh porcine femurs were used, with nine pairs assigned to a control group and the remaining divided into three metastatic tumor model groups according to anatomical location. In each model group, the right femurs were unfixed, while the left femurs were fixed. Each pair was further subdivided for testing compressive strength, torsional strength, and bending strength. The fixed femurs showed significantly greater mechanical strength than the unfixed models in all anatomical locations. In fixed models, compressive strength reached 71.0%, 80.6%, and 30.7% of control values in the subtrochanteric, midshaft, and supracondylar groups, respectively. Torsional strength reached 41.2%, 50.7%, and 52.0%, while bending strength reached 98.0%, 64.4%, and 40.0% of the control values for the same locations. These findings indicate that the fixation method provides effective biomechanical support in the subtrochanteric and midshaft regions but offers only moderate reinforcement in the supracondylar region. Moreover, our fixation approach may be suitable for stabilizing femoral metastatic lesions in specific anatomical sites.
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(This article belongs to the Section Chronic Diseases Prevention Review)