Roles of the screw types, proximity and anterior band wiring in the surgical fixation of transverse patellar fractures: a finite element investigation

Table 1 Comparison of the stiffness and load with 2 mm deformation in the experiment and FE calculations

Without anterior wire
	Dargel	Present FE model with 10-mm screw placement	Present FE model with 5-mm screw placement
Loading direction parallel
Linear stiffness (N/mm)	240.67 ± 28.44	275	879
Load with 2 mm deformation (N)	549.64 ± 56.18	549	1795^a
Loading direction 45°
Linear stiffness (N/mm)	147 ± 50.96	129	372
Load with 2 mm deformation (N)	351.35 ± 119.88	280	744^a
With anterior wire
	Bryant	Present FE model with 10-mm screw placement	Present FE model with 5-mm screw placement
Loading direction 45°
Linear stiffness (N/mm)	248.2 ± 30.9	365.3	406.1

ISSN: 1471-2474