Fig. 1

Preoperative plain radiographs and plain magnetic resonance images of the right elbow. a Anteroposterior view and b lateral view of plain radiographs. Osteoarthritic change is visible with ectopic calcifications and ossicles anteriorly, posteriorly, and laterally in the elbow. c Axial view and d sagittal view of the plain magnetic resonance images. A mass lesion is visible around the radial head and neck, anterior to the humerus, and in the olecranon fossa, with heterogeneous intensity on T1-weighted and T2-weighted images