Selection of internal fixation method for femoral intertrochanteric fractures using a finite element method

Table 2 Grouping according to different models

	Normal standing A			Slow walking B			Fast walking C			Stair descent D
	Medial defect a	Lateral defect b	Lateral and medial defect c	Medial defect a	Lateral defect b	Lateral and medial defect c	Medial defect a	Lateral defect b	Lateral and medial defect c	Medial defect a	Lateral defect b	Lateral and medial defect c
PFNA 1	1Aa	1Ab	1Ac	1Ba	1Bb	1Bc	1Ca	1Cb	1Cc	1Da	1Db	1Dc
ITN 2	2Aa	2Ab	2Ac	2Ba	2Bb	2Bc	2Ca	2Cb	2Cc	2Da	2Db	2Dc
PFNA + steel wire 3	3Aa	3Ab	3Ac	3Ba	3Bb	3Bc	3Ca	3Cb	3Cc	3Da	3Db	3Dc
PFNA + plate 4		4Ab	4Ac		4Bb	4Bc		4Cb	4Cc		4Db	4Dc
PFNA + steelwire + plate 5		5Ab	5Ac		5Bb	5Bc		5Cb	5Cc		5Db	5Dc

PFNA: Proximal femoral anti-rotation intramedullary nail; ITN: Integrated dual-screw fixation.