Table 1 Patient demographic parameters

39.56 ± 11.74

38.64±9.21

0.828

  Male, no. (%)

8 (50%)

7(63.63%)

0.696

  Female, no.(%)

8 (50%)

4(36.36%)

 Height^a, cm

163.94 ± 12.15

162.82±8.32

0.793

 Weight^a, kg

62.29 ± 15.61

54.00±8.34

0.121

 BMI^a, kg/m²

22.97 ± 4.15

20.44±3.25

0.102

 Diagnosis

1.000

  Rheumatoid arthritis

9

7

  Ankylosing spondylitis

7

4

  Left knee

13

10

0.548

  Right knee

14

7

 Bilateral TKAs

11

6

 Unilateral TKA

5

5

 Inpatient days^b, days

13.5 (6–29)

12 (7–28)

0.568

 Follow-up^b, months

46.5 (35–69)

58 (34–69)

0.138

  With crutch

7 (43.75%)

2 (18.18%)

0.231

  Without crutch

9 (56.25%)

9 (81.82%)

 Revision knee, no. (%)

2 (2/44, 2.27%)

0

1.000