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Table 1 Patient demographics in the groups with different implant types

From: Conversion to total hip arthroplasty after failed proximal femoral nail antirotations or dynamic hip screw fixations for stable intertrochanteric femur fractures: a retrospective study with a minimum follow-up of 3 years

Variable PFNA (n = 72) DHS (n = 70) P value
Age (years) 76.93 ± 9.25 74.96 ± 8.59 0.19
Sex (M:F) 31:41 34:36 0.51
Modes of prior failure fixation 0.94
 Screw cut-out 24 23 0.95
 Nonunion 21 18 0.65
 Avascular necrosis 16 16 0.93
 Insufficient initial fixation 11 13 0.60
ASA score, No. 0.82
 1 10 12 0.59
 2 18 17 0.92
 3 22 24 0.64
 4 22 17 0.40
Femoral fixation (NO.) 0.41
 Cemented 30 (41.7%) 34 (48.6%)  
 Uncemented 42 (58.3%) 36 (51.4%)  
Length of follow-up (months) 47.92 ± 4.31 48.10 ± 4.12 0.80
Body Mass Index (BMI, kg/m2) 29.50 ± 2.70 28.90 ± 1.50 0.10
AO/OTA classification (NO.) 0.88
 3.1A1.1 12 13 0.77
 3.1A1.2 37 33 0.61
 3.1A1.3 23 24 0.77