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Table 3 Distribution of patients relative to the SWAS and comparison of CPM and no-CPM groups

From: Continuous passive motion not affect the knee motion and the surgical wound aspect after total knee arthroplasty

SWAS

CPM group

No-CPM group

P value

Swelling

0.157

 0

27 (26.5%)

17 (15.8%)

 

 1

57 (55.9%)

70 (64.8%)

 

 2

18 (17.6%)

21 (19.4%)

 

Erythema

0.463

 0

95 (93.1%)

97 (89.8%)

 

 1

7 (6.9%)

11 (10.2%)

 

 2

0

0

 

Hematoma

0.028

 0

58 (56.9%)

44 (40.8%)

 

 1

36 (35.3%)

46 (42.6%)

 

 2

8 (7.8%)

18 (16.6%)

 

Drainage

0.558

 0

68 (66.7%)

73 (67.6%)

 

 1

28 (27.5%)

25 (23.2%)

 

 2

6 (5.9%)

10 (9.2%)

 

Blisters

0.175

 0

98 (96.1%)

98 (90.7%)

 

 1

2 (2%)

8 (7.4%)

 

 2

2 (2%)

2 (1.9%)

 

Total

0.289

 0

11 (10.8%)

5 (4.6%)

 

 1

36 (35.3%)

29 (26.9%)

 

 2

25 (24.5%)

34 (31.5%)

 

 3

12 (11.8%)

16 (14.8%)

 

 4

12 (11.8%)

11 (10.2%)

 

 5

3 (2.9%)

7 (6.5%)

 

 6

2 (2%)

4 (3.7%)

 

 7

2 (1.9%)

 

 8

1 (1%)

 

 9

 

 10

 
  1. SWAS, Surgical wound aspect scale
  2. Values shown are number and percentage of patients for each parameter and score level. P value significant at 0.05