Introduction: Tripolar lesions of the thoracic limb are rare. We report a rare a Galéazzi fracture associated with an ipsilateral fracture of ulna and olecranon in a 45-year-old patient. Surgical management has been delayed due to limited resources of the patient. Case presentation: It was a 45-year-old man admitted in our emergency after a fallen on bicycle. He presented a fracture of olecranon, shaft bone fracture of radius and ulnar, and distal radio-ulnar disjunction. The assessment at 18 months has found a consolidation of fractures. The elbow and wrist regained joint range, but we noted a limitation of prono-supination related to radioulnar synostosis. This limitation had no impact on the professional and sporting activities of the patient. Conclusion: Apart the difficulties to describe mechanism responsible of this complex lesion, the functional prognosis of the limb depends on a correct diagnosis and adequate management. At the last follow-up, the patient was satisfied with the result obtained. Longer term follow-up will allow us to determine the issue of this complex lesion in this patient. For the moment patient is not complained so wejust wait and see. Keywords: Galeazzi fracture, distal radioulnar disjunction, fractures, forearm, olecranon.