Biomechanical properties of off-axis screw in the treatment of vertical femoral neck fractures: a finite element analysis

Table 2 The statistics of four assembly elements and the total amount of nodes

Case model	Nodes	Elements	Mesh size
ICCS	317,782	201,575	1 mm
7.3-PTOS	317,142	201,021	1 mm
4.5-FTOS	318,507	202,198	1 mm
7.3-FTOS	339,386	214,009	1 mm

ICCS: the traditional inverted triangular cannulated screw model. 7.3-PTOS: two cancellous screws and a 7.3 mm partially threaded transverse screw inserted into the inferior head model. 4.5-FTOS: two cancellous screws along with a 4.5 mm fully threaded transverse screw placed into the calcar model. 7.3-FTOS: two cancellous screws and a 7.3 mm fully threaded transverse screw placed into the inferior head model

ISSN: 1471-2474