Fig. 2.

The operative steps to implant the Humerusblock. a The block is fixed to the proximal third of the humeral diaphysis with a cannulated 4-mm screw. b The two 2.5-mm K-wires passing through the block are pulled to the fracture line. c The varus/valgus deviation of the humeral head is corrected using a blunt elevator introduced percutaneously to push the head as much as possible laterally or medially. d The K-wires are pulled to the subchondral bone