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Table 2 Preoperative characteristics of each group

From: Is there a difference in joint line restoration in revision Total knee arthroplasty according to prosthesis type?

  Group 1 (n = 17) Group 2 (n = 13) Group 3 (n = 30) p-value
Age (years) 67.9 ± 4.5 66.4 ± 6.9 72.1 ± 7.6 0.07
Sex (M/F) 7/10 3/10 12/18 0.52
Cause of revision     0.6
 PJI 14(82.4%) 9(69.2%) 24(80%)
 Aseptic loosening 2(11.8%) 3(23.1%) 5(16.7%)
 Instability 0 1(7.7%) 1(3.3%)
 PE wear 1(5.9%) 0 0
Bone defect
 Femur
  I 0 2(15.4%) 1(3.3%) 0.14
  IIA 2(11.8%) 1(7.7%) 0
  IIB 15(88.2%) 9(69.2%) 25(83.3%)
  III 0 1(7.7%) 4(13.3%)
 Tibia
  I 11(64.7%) 7(53.8%) 12(40%) 0.42
  IIA 2(11.8%) 4(30.8%) 10(33.3%)
  IIB 4(23.5%) 2(15.4%) 8(26.7%)
  III 0 0 0
Knee scores
 KSKS 46.5 ± 10.7 38.7 ± 8.6 43.2 ± 11.2 0.12
 KSFS 39.4 ± 13.4 33.8 ± 10.8 41.7 ± 13.9 0.21
 WOMAC 84.4 ± 14.4 88.8 ± 7.0 87.8 ± 8.2 0.87
Range of motion(°) 104.7 ± 15.5 105 ± 28.9 95.3 ± 27.7 0.54
Weight (kg) 61.1 ± 12.6 59.5 ± 9.3 59.8 ± 13.7 0.79
Height(m) 1.55 ± 0.09 1.52 ± 0.05 1.54 ± 0.12 0.6
BMI (kg/m2) 25.3 ± 4.6 25.8 ± 3.0 25.2 ± 4.5 0.85
Follow up period (months) 66.1 ± 9.7 63.3 ± 10.3 60.7 ± 8.1 0.03
  1. Data are presented as mean ± standard deviation or number (percentage), unless otherwise stated