A Retrospective Study of Unicompartmental Knee Arthroplasty Functional Outcome and the Incidence of Medial Meniscus Posterior Root Tear in Spontaneous Osteonecrosis of the Knee
Table 2
Radiographic data.
Case no.
Ficat stage
Condylar ratio (%)
SONK volume (cm3)
Meniscus tear in MRI
1
II
61.4
5.833
MMPRT (+)
2
II
67.4
4.118
MMPRT (+)
3
II
44.0
1.349
MMPRT (+)
4
III
62.7
4.147
MMPRT (+)
5
III
87.9
6.881
MMPRT (+)
6
II
63.1
5.017
MMPRT (+)
7
III
67.2
4.672
MMPRT (+)
8
III
53.2
7.977
(-)
9
I
54.8
2.786
(-)
10
I
65.4
14.114
MMPRT (+)
11
III
68.3
12.41
MMPRT (+)
12
II
48.0
1.854
Medial meniscus anterior horn tear, MMPRT (-)
13
II
61.5
5.707
MMPRT (+)
14
I
56.6
10.731
Medial meniscus tear
15
I
62.4
9.309
MMPRT (+)
16
III
59.5
10.731
MMPRT (+)
17
III
65.6
4.146
MMPRT (+)
18
II
71.2
20.694
MMPRT (+)
19
III
63.9
11.727
Medial meniscus anterior horn tear, MMPRT (-)
20
II
52.5
2.829
Medial meniscus anterior horn tear, MMPRT (-)
21
III
66.7
9.108
MMPRT (+)
22
II
48.8
7.749
(-)
23
II
78.9
18.022
MMPRT (+)
Mean: 62.2%
MMPRT (+): 16/23 cases
SONK: spontaneous osteonecrosis of the knee; MMPRT: medial meniscus posterior root tear.
