Finite element analysis of four Kirschner wire fixation methods for treating patellar transverse fractures

• 30° crossed Kirschner wire fixation provides superior biomechanical stability for patellar transverse fractures compared to parallel, 45°, and 60° configurations. • The crossed 30° group exhibited the lowest fracture surface displacement and stress at 15° of knee flexion, indicating enhanced fracture stability. • Parallel Kirschner wire fixation resulted in the highest fracture surface stress and wire stress, suggesting a higher risk of fixation failure. • Finite element analysis effectively evaluates different fixation methods, offering a non-invasive approach to optimize surgical strategies.