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Table 1 Patient demographics

From: Better clinical outcome of total knee arthroplasty for rheumatoid arthritis with perioperative glucocorticoids and disease-modifying anti-rheumatic drugs after an average of 11.4-year follow-up

 

Group A

Group B

Group C

p value

Number of patients (n)

20

15

21

/

Number of knees (n)

29

26

36

/

Number of operated knees (unilateral/bilateral) (n)

11/9

4/11

6/15

/

Age (years)

53.91 ± 11.02

53.51 ± 11.11

48.21 ± 11.94

0.88

BMI (kg/m2)

23.42 ± 2.86

22.52 ± 3.84

22.12 ± 4.24

0.40

Sex (female/male) (n)

14/6

13/2

18/3

0.35

DAS28

2.56 ± 0.63

2.68 ± 0.43

2.36 ± 0.63

0.09

Flexion deformity (%)

15 (51.72)

18 (69.23)

22 (61.11)

0.41

General anesthesia/non general anesthesia(n)

12/8

12/3

13/8

0.31

Duration of medication treatment after surgery(years)

N/A

8.13 ± 2.42

8.33 ± 2.63

0.80

Pre-op HSS

43.61 ± 16.32

42.02 ± 14.32

42.01 ± 17.73

0.91

 Pre-op ROM (°)

78.51 ± 34.79

78.73 ± 30.82

89.81 ± 28.22

0.25

 Pre-op pain

4.96 ± 0.96

4.65 ± 1.02

3.48 ± 0.87

0.06

 Pre-op function

18.28 ± 7.11

18.85 ± 7.79

18.00 ± 9.09

0.92

Pre-op VAS

5.93 ± 0.59

6.37 ± 0.63

6.76 ± 0.53

0.12

Pre-op WBC (*109/L)

6.75 ± 1.81

7 ± 1.92

7.05 ± 2.58

0.88

Pre-op HGB (g/L)

119.12 ± 17.09

111.21 ± 14.22

116.22 ± 18.21

0.34

Pre-op CRP (mg/L) #

4.5 (1.6–15.3)

15.0 (4.0–27.9)

8.5 (1.7–25.9)

0.18

Pre-op ESR (mm/h) #

27.0 (12.0–64.0)

58.0 (38.5–78.0)

32.0 (14.5–65.3)

0.06

Pre-op RF (U/ml) #

39.0 (10.4–106.0)

64.0 (28.0–189.5)

31.2 (10.7–131.3)

0.32

  1. n case number, TKA total knee arthroplasty, BMI body mass index, DAS28 Disease Activity Score 28-joint, Pre-op preoperative, HSS Hospital for Special Surgery score, ROM range of motion, VAS visual analog scale, WBC white blood cell, HGB hemoglobin, CRP C-reaction protein, ESR erythrocyte sedimentation rate, RF rheumatoid factor, N/A not applicable
  2. # Data were described as “median (interquartile range)” with Kruskal-Wallis test