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Table 7 Clinical outcomes CPAK type 1 and 2 subgroups

From: Comparative effects of mechanical and functional alignment in bilateral robotic total knee arthroplasty: a randomized controlled trial

CPAK

Clinical outcomes

 

FA

 

MA

p-value

Mean diff

95%CI

n

Mean (SD)

n

Mean (SD)

 

I

VAS pain score (first 3 days)

13

4.5 (1.2)

20

4.2 (1.8)

0.590

0.3

(− 0.84, 1.44)

Flexion range

  

Preoperative

13

120.2 (9.7)

20

120.6 (7.5)

0.896

− 0.4

(− 7.31, 6.51)

Day 3

13

89.0 (8.2)

20

87.0 (11.5)

0.569

2.0

(− 5.48, 9.48)

1 month

13

105.9(11.0)

20

102.8(12.0)

0.451

3.1

(− 5.75, 11.95)

3 months

13

118.0(8.4)

20

116.7(9.7)

0.711

1.3

(− 5.64, 8.24)

6 months

12

125.1 (5.6)

18

124.1 (6.3)

0.669

1.0

(− 3.57, 5.57)

KOOS

  

Preoperative

13

33.8 (11.5)

20

35.6 (16.5)

0.736

− 1.8

(− 12.43, 8.83)

1 month

13

66.0 (11.3)

20

59.0 (13.0)

0.123

7.0

(− 2.31, 16.31)

3 months

13

70.0 (5.9)

20

68.5 (7.8)

0.570

1.5

(− 3.71, 6.71)

6 months

12

73.4 (6.6)

18

70.3 (5.9)

0.190

3.1

(− 1.82, 8.02)

FJS

  

Preoperative

13

25.3 (17.8)

20

24.8 (16.3)

0.931

0.5

(− 12.87, 13.87)

1 month

13

38.0 (9.3)

20

31.0 (8.9)

0.040

7.0

(− 0.1, 14.1)

3 months

13

56.9 (9.0)

20

45.0 (10.8)

0.002

11.9

(4.33, 19.47)

6 months

12

72.9 (7.2)

18

57.3 (8.9)

 < 0.001

15.6

(9.46, 21.74)

Patient satisfaction score

13

85.8 (6.0)

20

78.5 (4.3)

 < 0.001

7.3

(3.11, 11.49)

II

VAS pain score (first 3 days)

13

4.0(1.7)

8

5.5(0.8)

0.029

− 1.5

(− 2.8, − 0.2)

Flexion range

  

Preoperative

13

122.5 (10.8)

8

126.3 (5.8)

0.374

− 3.8

(− 12.38, 4.78)

Day 3

13

92.7(10.8)

8

93.0 (4.6)

0.940

− 0.3

(− 8.36, 7.76)

1 month

13

113.2 (6.4)

8

109.3 (8.7)

0.249

3.9

(− 4.5, 12.3)

3 months

13

120.8 (5.8)

8

122.4 (5.3)

0.535

− 1.6

(− 7.44, 4.24)

6 months

12

127.5 (5.7)

8

129.0 (4.8)

0.546

− 1.5

(− 6.98, 3.98)

KOOS

  

Preoperative

13

39.3 (12.9)

8

34.1 (13.3)

0.392

5.2

(− 8.77, 19.17)

1 month

13

62.0 (12.2)

8

58.5 (12.4)

0.526

3.5

(− 9.6, 16.6)

3 months

13

69.0 (7.9)

8

67.8 (9.0)

0.756

1.2

(− 7.94, 10.34)

6 months

12

70.0 (6.6)

8

71.2 (4.0)

0.659

− 1.2

(− 6.67, 4.27)

FJS

  

Preoperative

13

30.3 (15.9)

8

27.1 (14.6)

0.649

3.2

(− 12.85, 19.25)

1 month

13

32.9 (8.3)

8

32.6 (9.4)

0.940

0.3

(− 9.26, 9.86)

3 months

13

49.2 (9.8)

8

48.2 (12.0)

0.833

1.0

(− 10.91, 12.91)

6 months

12

61.3 (8.5)

8

58.9 (11.1)

0.586

2.4

(− 8.43, 13.23)

Patient satisfaction score

13

82.3 (6.7)

8

80.6 (5.6)

0.559

1.7

(− 4.72, 8.12)