Implant fixation on myositis mass masquerading as distal humerus: an intraoperative error

Myositis ossificans is a non-neoplastic ossifying mass seen in association with a bony and soft tissue trauma. We present a case of myositis ossificans mass developed after a distal humerus fracture mimicking the shape of lateral humeral condyle which led to inappropriate fixation of implant over the mass. Preoperative planning, extensile surgical approach, complete excision of the mass and use of image intensifier are highlighted which will avoid complications like failure of fixation and recurrence.