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Table 2 Patient characteristics at baseline between cohorts

From: Conversion of failed proximal femoral nail antirotation to uncemented or cemented femoral component fixation: a multicentre retrospective study with a median 10-year follow-up

Variable Uncemented THA (n = 116) Hybrid THA (n = 120) P-value
Age (years)
 Median (range) 66.4(65–71) 66.7(65–72) 0.206
Sex, no. %    0.909
 Female 55(47.4) 56(46.7)  
 Male 61(52.6) 64(53.3)  
BMI (kg/m2)
 Median (range) 24.5(16.7–31.3) 24.2(16.1–32.8) 0.325
 BMD -3.61 ± 0.72 -3.64 ± 0.76 0.281
Side, no.%    0.443
 Right 58(50.0) 54(45.0)  
 Left 58(50.0) 66(55.0)  
Hip condition prior to conversion, no.%    0.869
 Symptomatic 66(56.9) 67(55.8)  
 asymptomatic 50(43.1) 53(44.2)  
Femoral head size (mm), no. %    0.945
 28 23(19.8) 26(21.7)  
 32 44(37.9) 41(34.1)  
 36 49(42.2) 53(44.2)  
IHFs, AO/OTA, no. %    0.543
 31A1 48(41.4) 45(37.5)  
 31A2 68(58.6) 75(62.5)  
Charlson comorbidity index at surgery, no. %    0.717
 Low 42(36.2) 45(37.5)  
 Medium 57(49.1) 60(50.0)  
 High 17(14.7) 15(12.5)  
Reasons for conversion, no. %    0.459
 Instability 55(47.4) 63(52.5)  
 Mechanical failure 45(38.8) 42(35.0)  
 Both 16(13.8) 15(12.5)  
Conversion interval (years)    0.644
  < 2 74(63.8) 80(66.7)  
  ≥ 2 42(36.2) 40(33.3)  
Follow-up (months)    
 Median (range) 120.2(102–127) 120.1(101–127) 0.219
  1. THA Total Hip Arthroplasty, BMI Body Mass Index, BMD Bone Mineral Density