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Table 1 Patient characteristics in the Hi-Tech Knee II and FINE Knee groups

From: A comparative study of flat surface design and medial pivot design in posterior cruciate-retaining total knee arthroplasty: a matched pair cohort study of two years

  Hi-Tech Knee II (n = 45) FINE Knee (n = 45) p values
Gender (male:female) 7:38 7:38 1.000a
Age, years 74.1 (8.1) 74.3 (10.3) 0.351b
Diagnosis (OA:RA) 38:7 30:15 0.846a
Height, cm 149.5 (8.6) 147.8(7.2) 0.015b
Weight, kg 60.3 (9.5) 55.7(8.4) 0.035b
BMI 25.8 (3.1) 25.6 (3.7) 0.566b
Surgical approach (Mid-vastus: Medial parapatellar) 29:16 41:4 0.005a
Preoperative knee scorec 64.6 (12.0) 55.1 (14.3) 0.006b
Preoperative functional scorec 45.6 (16.9) 33.3 (21.1) 0.013b
Preoperative total ROM, degrees 104 (23) 104 (23) 0.961b
Preoperative maximum flexion, degrees 114 (17) 116 (19) 0.436b
Preoperative flexion contracture, degrees 11 (10) 13 (10) 0.226b
Preoperative FTA, degrees 183.7 (6.8) 181.3 (5.2) 0.069b
  1. Mean (standard deviation)
  2. aFisher’s exact probability test
  3. bWilcoxon signed rank test, cKnee Society score
  4. OA osteoarthritis, RA rheumatoid arthritis, BMI body mass index, ROM range of motion, FTA femoro-tibial angle