Anatomical proximal humerus osteosynthesis devices and systems and methods of use thereof

A method of promoting healing of a fracture in the humerus of a subject, the method comprising the steps of:

• placing a bone plate device adjacent a surface of the fractured proximal humerus, wherein the bone plate device comprises:
• a shaft region comprising an elongated portion extending along a longitudinal axis, the shaft region having an upper surface, an opposed bone-facing surface, a lower edge, a first side edge, a second side edge, and a width extending between the first and second side edges, and wherein the shaft region has at least one fastener hole extending through the upper surface and bone-facing surface for receiving at least one bone fastener;
• and
• a head region configured to conform to and adapted to be attached to a greater tuberosity of the proximal humerus, the head region extending at a lateral angle relative to the longitudinal axis, the head region having an upper surface, an opposed bone-facing surface, an upper boundary edge with a curvature extending at a lateral angle, a first side edge, and a second side edge, the head region having a curved bone-facing surface with a radius of curvature that approximately conforms to a shape of the greater tuberosity, wherein the head region has a maximum width extending between the first or second side edge and a lower end of the upper boundary edge, and wherein the head region comprises a plurality of fastener holes extending through the upper surface and bone-facing surface for receiving bone fasteners adapted and configured to secure the head region to the greater tuberosity such that the upper edge curvature of the head region is adapted and configured to be disposed substantially adjacent an upper curvature of the greater tuberosity;
• securing the bone plate device to the fractured humeral bone by inserting bone fasteners through at least a portion of the fastener holes in the bone plate device and through the bone plate device into the bone such that the head region of the bone plate device is attached to a greater tuberosity of the proximal humerus and the shaft region of the bone plate device is attached to a shaft of the humerus, and wherein the head region is secured to the greater tuberosity such that the upper edge curvature of the head region is disposed substantially adjacent an upper curvature of the greater tuberosity.