Does proximal femoral nail antirotation achieve better outcome than previous-generation proximal femoral nail?

Table 1 Demographic details and fracture characteristics in the proximal femoral nail and proximal femoral nail antirotation groups

	PFN group	PFNA group	P value
Number of patients	73	85	NA
Male:female	31:42	37:48	0.893
Age, yr	76.6 (65-90)	74.9 (65-92)	0.213
BMI, kg/m2	21.4 (18.5-31.6)	22.8 (20.4-28.3)	0.576
Femoral BMD, T-score	-2.83 (-1.3 to -5.3)	-3.14(-1.1 to -6.1)	0.518
Charlson Comorbidity Index[15]	13.4 (3-18)	11.9 (4-19)	0.536
Cause of injury			0.890
Slip down	56	65
Traffic accident	8	11
Fall down	9	9
AO/OTA classification			0.750
31-A1	14	19
31-A2	42	50
31-A3	17	16
Stay before operation, d	4.02 (1-13)	2.84 (1-17)	0.253

PFN: Proximal femoral nail; PFNA: Proximal femoral nail antirotation; NA: Not available; BMI: Body mass index; BMD: Bone mineral density.