AI Article Synopsis
- * FEA was conducted on FNFs with Pauwels angles of 40°, 50°, 60°, and 70° to assess key biomechanical parameters like stress and displacement in both the fracture fragment and implants.
- * Results indicate that a smaller angle between the fracture line and CCS improves the model's stability by increasing its resistance to tension, making it a more effective treatment approach for FNFs.
Article Abstract
Purpose: Currently, treating femoral neck fractures (FNFs) with the inverted triangle configuration requires alignment between the femoral neck's long axis and the axis of cannulated compression screws (CCS). To address whether the 'parallel' alignment is the most effective approach for fractures with varying Pauwels angles, we employed finite element analysis (FEA) to investigate how different angles between fracture line and CCS affect stability, based on various Pauwels angles. This study aims to offer improved guidance for treating FNFs with the inverted triangle configuration.
Methods: FNF models with Pauwels angles of 40°, 50°, 60°, and 70° were developed. The CCS were positioned in an inverted triangle configuration based on the angle between the fracture line and CCS. Using FEA, we compared the biomechanical properties of each model to evaluate the stability by evaluating five key parameters: maximal stress in the proximal femoral fracture fragment (MPFS) and implants (MIS), maximal displacement of the bone (MBD) and implants (MID), and maximal relative displacement of the fragments (MRD).
Results: For Pauwels angles of 40°, 50°, 60°, and 70° across different FNF models, various parameters exhibited similar results. The MPFS showed an upward trend with a decrease in the angle, whereas the MIS, MBD, MID, and MRD all exhibited downward trends.
Conclusion: The FEA results suggest that decreasing the angle between the fracture line and the CCS for the treatment of FNF can increase the tension resistance of the model, thus increasing the model's stability.
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| http://dx.doi.org/10.1080/10255842.2024.2392556 | DOI Listing |
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