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Table 1 Patient demographic characteristics

From: Does the degree of intraoperatively identified cartilage loss affect the outcomes of primary total knee arthroplasty without patella resurfacing? A prospective comparative cohort study

Patient demographic characteristics

Overall (n = 212)

Group 1 (n = 110)

Group 2 (102)

p valuea

Age (years)

71.6 (60.0–85.0)

71.8 (60.0–85.0)

71.3 (61.0–82.0)

0.692

Sex, n (%)

 Female

191 (90.1)

102 (93.6)

89 (86.4)

0.091

 Male

21 (9.9)

7 (6.4)

14 (13.6)

BMI (kg/m2)

26.7 (19.5–32.3)

26.9 (19.5–30.5)

26.3 (20.1–32.3)

0.725

F/U period (months)

16.2 (12.0–21.0)

16.3 (12.0–21.0)

16.2 (12.0–20.0)

0.641

Side, n (%)

 Right

97 (45.8)

51 (46.8)

46 (44.7)

0.681

 Left

115 (54.2)

58 (53.2)

57 (55.3)

0.626

Preop HKA angle (°)b

− 5.5 (− 25 to 16.5)

− 5.9 (− 25 to 13.5)

− 5.2 (− 20 to 16.5)

0.735

Preop ROM

 FC (°)c

9.5 (− 10.0 to 35.0)

9.5 (− 10.0 to 25.0)

9.5 (− 8.0 to 35.0)

0.607

 MF (°)

115.5 (70.0–150.0)

118.5 (70.0–150.0)

112.5 (80.0–150.0)

0.719

  1. BMI Body mass index, F/U follow-up, Preop preoperative, HKA angle hip-knee-ankle angle, ROM range of motion, FC flexion contracture, MF maximal flexion
  2. Data are presented as the mean with the range in parentheses, unless indicated otherwise
  3. aThe level of statistical significance was set at p < 0.05
  4. bVarus alignment is indicated as HKA angle < 0°
  5. cNegative value of FC indicates hyperextension