Fig. 1

Mason Type II radial head fracture with traumatic capitellar chondral lesion und loose joint bodies. a-c CT scan showed a dislocation of 3 mm in coronal view. Loose bodies and capitellar injury were not identified (d) Arthroscopy revealed a large chondral loose body [LB] entrapped between the capitellum [C] and the radial head [RH]. e grade IV chondral lesion to the capitellum. f After removal of fracture hematoma, (g) chondroplastic and (h) microfracturing was performed at the capitellum humeri. i Fracture reduction was carried out with a sharp hook and (j) anatomic restoration of the radial head was achieved by screw osteosynthesis over the anterolateral portal. k,l Postoperative x-rays demonstrate anatomic reduction and correct screw placement