Fig. 1

Trans-olecranon fracture posterior dislocation is different from posterior Monteggia fractures. A Trans-olecranon fracture posterior dislocation: olecranon fractures, posterior dislocation of the elbow, and stable proximal radioulnar joint. B Posterior Monteggia fractures (type Bado IIA): olecranon fractures, posterior dislocation of the radial head, and disruption of the proximal radioulnar joint