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Table 1 Comparison of basic data between the two groups

From: Comparison of cylindrical and tapered stem designs for femoral revision hip arthroplasty

classification cylindrical group tapered group P value
Age (years) 68.3 ± 7.0(49 ~ 81) 67.7 ± 7.9(50 ~ 83) 0.481
Gender (female/male) 28/26 30/36 0.860
BMI(kg/m2) 26.1 ± 3.0 (19.00 ~ 32.00) 26.0 ± 2.5 (20.74 ~ 31.99) 0.860
Initial replacement to repair time (months) 11.5 ± 4.8 (1 ~ 21) 10.9 ± 6.6 (0.08 ~ 25) 0.370
reasons for revision(n)    0.583
Aseptic loosening 49 57  
Periprosthetic fractures 3 3  
Dislocation 2 6  
Paprosky femoral defect (n)    0.347
I 10 12  
II 27 36  
IIIA 16 15  
IIIB 1 3  
ASA classification(n)    0.168
I 5 6  
II 41 48  
III 8 12  
Combined acetabular revision(n) 47 63 0.071
VAS score (score) 7.6 ± 1.3 (6 ~ 10) 7.5 ± 1.1 (6 ~ 10) 0.982
Harris score (score) 41.1 ± 6.1 (29 ~ 52) 40.1 ± 6.6 (27 ~ 52) 0.423