Kamara A, Ji X, Liu C, et al. - This research was attempted to assess the impact of exit height, trajectory, and the number of pins on the stability of cross and divergent-lateral pins used in the fixation of extension-type, transverse supracondylar humerus fracture in children, based on finite element analysis. Researchers constructed a distal humerus model consisting of the ossific nucleus of the capitellum (ONC) and distal cartilage of a 6-year-old boy via three-dimensional finite modeling. As per the results, 2-cross pins are found to be superior to 2-divergent lateral pins only against torsional forces for typical transverse fractures. The data demonstrated that pins exiting at the upper border of the metaphyseal-diaphyseal junction offer the best mechanical stability with 2-cross pins. For these transverse fractures, two-divergent-lateral pins with a distal pin going through the middle third of the ONC provides the best mechanical stability against translation forces. Three-cross pins nevertheless offer the best mechanical stability against both translation and torsional forces. This research provides important clues in the preoperative evaluation and management of extension-type supracondylar fractures in children.