Finite element analysis of a novel patellar fracture fixation method.

BACKGROUND

Patellar fractures present challenges in treatment, with traditional methods often leading to complications such as loss of reduction and implant failure. This study aimed to compare a novel suture fixation technique with the traditional tension band method using finite element analysis.

METHODS

CT images of a healthy 35-year-old male were used to construct 3D patellar models. Two fixation methods were modeled: the novel suture technique using polyester sutures and traditional tension band fixation with Kirschner wires and cerclage wires. Finite element analysis was conducted to compare stress and pressure distribution under varying force angles.

RESULTS

The novel suture fixation method demonstrated superior stress dispersion and more uniform pressure distribution compared to the traditional tension band technique. Stress concentration was notably reduced, indicating potential for enhanced fracture stability and healing. Tensile testing confirmed the mechanical properties of the sutures, further validating the proposed method.

CONCLUSIONS

Finite element analysis revealed that the novel suture technique for patellar fractures provides better stress and pressure distribution compared to traditional methods. This approach offers promise for improved fracture stability and reduced complications. Clinical validation and long-term follow-up studies are warranted to confirm these findings and assess patient-specific outcomes.