| Grade I Injury: | Only fracture or epiphyseal separation with minimal displacement. |
| Grade II Injury: | Bone fragment displaced downward and rotated forward, possibly reaching the joint level. |
| Grade III Injury: | Fracture fragment interposed in the joint, with partial elbow dislocation. |
| Grade IV Injury: | Posterior or posterolateral elbow dislocation, with the bone fragment interposed in the joint. |
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