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Table 3 Comparison of patient-reported outcome measures between patients with retained and altered CPAK types

From: Preserving coronal knee alignment of the knee (CPAK) in unicompartmental knee arthroplasty correlates with superior patient-reported outcomes

 

No CPAK change (n = 75)

CPAK change (n = 89)

p-Value

Preoperative HSS score

63.0 ± 12.8

62.2 ± 17.1

0.790

Preoperative KS knee score

53.2 ± 18.1

54.8 ± 15.8

0.669

Preoperative KS function score

38.0 ± 16.5

38.0 ± 16.3

1.000

Preoperative WOMAC pain

10.7 ± 3.8

10.7 ± 4.7

0.939

Preoperative WOMAC stiffness

4.1 ± 1.9

3.9 ± 2.0

0.755

Preoperative WOMAC physical function

34.5 ± 7.4

32.1 ± 8.3

0.152

Preoperative WOMAC total

49.2 ± 10.3

46.8 ± 10.7

0.275

Preoperative FJS

9.8 ± 9.5

12.3 ± 11.6

0.606

1Y HSS score

88.1 ± 9.5

83.3 ± 13.2

0.042*

1Y KS knee score

90.4 ± 7.1

86.1 ± 10.9

0.009*

1Y KS function score

66.1 ± 18.9

63.0 ± 19.9

0.384

1Y WOMAC pain

2.9 ± 3.0

4.1 ± 3.9

0.048*

1Y WOMAC stiffness

1.6 ± 1.6

2.0 ± 1.8

0.208

1Y WOMAC physical function

15.4 ± 8.9

16.8 ± 10.8

0.422

1Y WOMAC total

19.8 ± 11.9

22.9 ± 14.7

0.204

1Y FJS

56.3 ± 25.1

56.9 ± 20.6

0.929

  1. CPAK, Coronal plane alignment of the knee; HSS, the Hospital for Special Surgery; KS, the Knee Society; WOMAC, the Western Ontario and McMaster Universities Arthritis Index; FJS, Forgotten Joint Score
  2. *Statistically significant at p < 0.05