| Classification | Description | Notes |
| Type 1 | Apex anterior angulation and anterior radial head dislocation | More common in children |
| Type 2 | Apex posterior angulation with posterior radial head dislocation | More common in adults |
| Type 3 | Lateral radial head dislocation | |
| Type 4 | Fractures of both radius and ulna with radial head dislocation |
References:
Sheehan, S. E., et al. (2013). “Traumatic Elbow Injuries: What the Orthopedic Surgeon Wants to Know.” Radiographics 33(3): 869-888.
Bado JL. (1967) “The Monteggia lesion.” Clin Orthop Relat Res 50:71–86.