Table 3: Result of Magnetic Resonance Imaging.

Factors 6M after op. 1 Y after op
Extrusion - -
Sagittal 1/3~2/3 1 1
Coronal 1/3~2/3 2 2
1/3 > 2 3
Signal - -
Increased in < 1/3 meniscus 2 7
7;1/3 8 6
Diffusely increased 5 2
Repair - -
Healed - 1
Partly healed 8 12
No healing 7 2