After malunited fractures of the distal radius the original anatomy of the wrist joint can be restored only by osteotomy of the radius and interposition of a cortico-cancellous bone block. This procedure has been shown to be much easier using a new bone plate for internal fixation. The plate is applied to the radius volarly through a radio-volar approach. The correcting angles can be adjusted easily. The stable osteosynthesis allows early postoperative motion. In cases of osteoarthritic changes the procedure may be combined with a denervation of the wrist joint (A. WILHELM).