Pfirrmann classification | Grade I | Grade II | Grade III | Grade IV | Grade V |
MK map discs | 4 | 10 | 16 | 15 | 1 |
MK values | 1.994 | 1.413 | 1.19 | 1.848 | 1.743 |
±SD | 0.433 | 0.249 | 0.255 | 0.735 | |
P-value | 0.024 | 0.027 | 0.002 |