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Table 1 Patient characteristics

From: Do refinements to original designs improve outcome of total knee replacement? A retrospective cohort study

  All TKRs Clinically evaluated TKRs
  Classic (n = 100) Complete (n = 100) p value Classic (n = 72) Complete (n = 71) p value
Age (years (SD)) 71.3 (6.8) 70.8 (8.5) 0.67 70.5 (7.9) 69.9 (7.3) 0.62
Male (%) 34 36 0.77 35 42 0.36
BMI (kg/m2 (SD)) 28.5 (4.9) 28.6 (4.7) 0.94 29.5 (5.0) 29.0 (4.2) 0.51
Right (%) 59 58 0.89 54 58 0.67
Underlying diagnosis (%)    0.12    0.35
  Osteoarthritis 87 95   87.5 94  
  Posttraumatic arthritis 3 2   4.2 1.4  
  Rheumatoid arthritis 10 3   8.3 4.2  
High tibial osteotomy (%)    0.49    0.47
  Varus deformity 6 4   6.9 4.2  
  Valgus deformity 1 0   1.4 0  
ASA (%)    0.98    1.00
  1 21 21   23.6 23.9  
  2 68 67   66.7 66.2  
  3 11 12   9.7 9.9  
Surgeon (%)    0.76    0.44
  1 37 42   33.3 43.6  
  2 41 37   44.4 36.6  
  3 22 21   22.2 19.7  
  1. BMI, body mass index; ASA, American Society of Anaesthesiologists classification.