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Monteggia Fracture: Definition, Types, Causes, Diagnosis & Management Introduction A Monteggia fracture is a severe and complex forearm injury characterized by a fracture of the proximal ulna along with dislocation of the radial head at the elbow. It was first described by Giovanni Battista Monteggia in 1814 and remains one of the most challenging injuries to diagnose and treat because the fracture and joint dislocation must be addressed together. Monteggia fracture-dislocations are particularly common in children but also occur in adults, typically due to high-energy trauma. What is a Monteggia fracture? A Monteggia fracture has two major components: 1. Fracture of the Proximal Ulna Usually in the upper one-third or middle one-third of the ulna Often angulated or displaced 2. Dislocation of the Radial Head Radial head is displaced from its normal articulation with the capitellum Can be anterior, posterior, or lateral depending on injury mechanism This ...