MME1级(n = 16)

MME2级(n = 24)

MME3级(n = 57)

MME4级(n = 25)

P

年龄(岁)

60.6 ± 8.1

63.3 ± 9.8

64.4 ± 9.1

63.6 ± 9

0.546

性别：女

11 (68.8)

11 (45.8)

39 (68.4)

17 (68)

0.236

BMI (kg/m²)

26.8 ± 3.4

27.1 ± 2.7

27.7 ± 3.8

28.5 ± 3.6

0.359

半月板损伤评分

3 (2, 5)

4 (2, 5)

5 (4, 6)

6 (5, 7)

<0.01

BML

1 (0, 2)

2.5 (1.3, 4.8)

5 (2.5, 8.0)

3 (2, 7)

<0.01

软骨损伤评分

8.5 (6.5, 14.5)

20 (15, 24.8)

23 (15, 25)

23 (20, 25)

<0.01

JSW (mm)

4.6 (3.4, 5.6)

2.9 (1.8, 4.3)

1.9 (1.2, 3.1)

1.9 (1.2, 3.0)

<0.01

术前HKA (˚)

3.5 ± 3.3

6.0 ± 3.7

8.0 ± 4.2

9.1 ± 4.8

<0.01

症状持续时间(年)

2.5 (1, 3)

6.5 (1, 10)

6 (2, 10)

10 (2, 10)

<0.01

K-L分级

<0.01

2

15 (93.7)

9 (37.5)

14 (26.4)

1 (4)

3

1 (6.3)

11 (45.8)

18 (31.6)

10 (40)

4

0

4 (16.7)

25 (43.9)

14 (56)

术后HSS评分

82 (80, 84)

79.5 (74.3, 81)

75 (73, 78)

74 (71, 76)

<0.01