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| Classification | Injury |
|---|---|
| KD I | Injury involves only one cruciate ligament and a collateral ligament |
| KD II | Injury involves both cruciate ligaments |
| KD III M | Injury involves both cruciate ligaments and the tibial collateral ligament |
| KD III L | Injury involves both cruciate ligaments and the fibular collateral ligament |
| KD IV | All four ligaments are injured |
| KD V | Knee dislocation associated with fracture |
