Patent ID: 8192472

Claim:
A bone plate for the internal fixation of the coronoid of the proximal ulna, consisting essentially of: a) a central ring element including a threaded screw hole for receiving a locking fastener; b) a first arm radially coupled to the central ring, the first arm having a plurality of first ring elements each defining a threaded screw hole for receiving a locking fastener, the first ring elements each having a lower surface that is concave in a medial-lateral direction oriented transverse to a longitudinal axis extending through the first arm; c) a second arm radially coupled to the central ring, the second arm including one and only one second ring element having one and only one threaded screw hole for receiving a locking fastener, the second arm further including a single paddle-like first buttress element coupled to the second ring element by a narrower bridge element on an opposite ring from the central ring, the first buttress element having no hole for receiving a bone fastener and forming bone supporting structure that can bear against the coronoid surface; d) a third arm radially coupled to the central ring, the third arm having one and only one threaded screw hole for receiving a locking fastener; and e) a fourth arm radially coupled to the central ring, the fourth arm having one and only one paddle-like second buttress element with no hole for receiving a bone fastener, the second buttress element forming bone supporting structure that can bear against the coronoid surface, wherein the concave lower surface of the first arm provides a structure which is adapted to align the plate over and relative to coronoid ridge of the proximal ulna, and when so aligned on the coronoid ridge, the first arm extends distally from the central ring element along a longitudinal axis of the proximal ulna, the first buttress element extends medially relative to the central ring element and supports the bone at the medial side of the coronoid ridge, the second buttress element extends proximally relative to the central ring element, and the third arm extends laterally from the central ring element.