Table 5: 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 3 3
1/3 > 1 2
Signal
Increased in < 1/3 meniscus 4
1/3 10 9
Diffusely increased 5 2
Repair
Healed 1
Partly healed 8 12
No healing 7 2