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Table 5 Comparison of clinical and patient-reported outcomes between SV and MV subgroups in more and less osteophytes groups. Varus defined by LDFA

From: Predicting clinical outcomes after total knee arthroplasty from preoperative radiographic factors of the knee osteoarthritis

  

More osteophytes (n = 47)

Less osteophytes (n = 63)

  

SV (n = 18)

MV (n = 29)

p-value

SV (n = 22)

MV  41)

p-value

ROM

preoperative (degree)

99.4 ± 20.9

104.0 ± 22.7

0.49

113.9 ± 20.0

115.9 ± 19.5

0.71

 

postoperative (degree)

123.1 ± 13.6

120.7 ± 13.5

0.56

122.7 ± 12.8

122.2 ± 12.4

0.87

 

angle difference (degree)

23.1 ± 19.3

16.8 ± 17.8

0.27

8.9 ± 16.1

5.7 ± 20.0

0.5

KS

preoperative

39.7 ± 11.9

40.5 ± 15.3

0.85

48.5 ± 13.9

50.3 ± 14.4

0.65

 

postoperative

95.4 ± 6.8

97.5 ± 3.5

0.25

97.6 ± 3.4

96 ± 5.4

0.17

 

improvement rate (%)

92.5 ± 10.8

96.0 ± 5.78

0.23

95.7 ± 5.3

86.3 ± 23.8

0.03*

FS

preoperative

31.8 ± 21.5

45.2 ± 13.2

0.03*

45.1 ± 19.3

41.6 ± 18.4

0.5

 

postoperative

70.8 ± 23.3

80 ± 13.7

0.14

81.4 ± 18.1

74.3 ± 16.4

0.14

 

improvement rate (%)

59.0 ± 26.3

65.5 ± 23.4

0.41

72.3 ± 26.1

49.4 ± 32.7

0.005*

KOOS-

preoperative

45.4 ± 18.7

44.8 ± 21.7

0.92

48.7 ± 21.8

47.7 ± 15.1

0.86

Symptom

postoperative

81.1 ± 15.4

80.9 ± 15.3

0.98

84.5 ± 11.2

77.9 ± 17.6

0.07

 

improvement rate (%)

63.4 ± 28.9

65.3 ± 27.0

0.83

63.1 ± 31.2

53.9 ± 35.1

0.31

KOOS-

preoperative

45.4 ± 15.9

41.3 ± 20.7

0.45

40.5 ± 18.8

39.7 ± 17.5

0.89

Pain

postoperative

86.2 ± 17.4

88.4 ± 11.5

0.64

90.6 ± 8.2

83.3 ± 14.6

0.01*

 

improvement rate (%)

76.9 ± 29.5

80.3 ± 18.7

0.67

81.8 ± 18.0

69.3 ± 26.0

0.03*

KOOS-

preoperative

59.8 ± 18.2

59.7 ± 15.7

0.98

63.9 ± 19.3

57.3 ± 16.9

0.2

ADL

postoperative

83 ± 18.4

87.7 ± 10.1

0.33

90.1 ± 8.3

84.1 ± 12.2

0.02*

 

improvement rate (%)

59.4 ± 36.1

68.1 ± 26.2

0.39

72.2 ± 29.3

55.9 ± 32.4

0.06

KOOS-

preoperative

25.9 ± 19.5

25.9 ± 12.4

0.99

26.8 ± 15.2

26.4 ± 14.5

0.92

QOL

postoperative

66.5 ± 26.7

66 ± 22.6

0.95

74.9 ± 18.5

59.5 ± 19.4

0.004*

 

improvement rate (%)

57.6 ± 29.0

54.6 ± 28.4

0.74

63.5 ± 28.9

44.6 ± 24.8

0.02*

  1. SV Strong varus. LDFA> 82; MV Mild varus. LDFA< 82; LDFA Lateral distal femoral angle, ROM Range of motion, KS Knee score, FS Function score, KOOS Knee injury and osteoarthritis outcome score. *Significantly different, p < 0.05