| 主权项 |
1. A fixation device for facilitating reductions and repair of a fractured humerus, the humerus including at least a proximal humerus, a humeral shaft, a humeral head, a biceps groove, a lesser tuberosity, a greater tuberosity, and an articular surface, the fixation device comprising:
a bone plate configured to overlie and contact portions of the proximal humerus and the humeral shaft, said bone plate including a body portion and a first neck portion, said body portion having a proximal end configured to be placed proximate the humeral head, and a distal end opposite said proximal end, said body portion defining a first mid-longitudinal axis extending through said proximal end and said distal end thereof, and said body portion having a maximum width perpendicular to the first mid-longitudinal axis thereof, said first neck portion extending from said proximal end of said body portion, said first neck portion defining a second mid-longitudinal axis generally transverse to the first mid-longitudinal axis, said first neck portion having a first portion connected to said proximal end of said body portion, and said first neck portion having a second portion terminating in a first end portion of said bone plate, the second mid-longitudinal axis extending through said first portion of said first neck portion, and through said first end portion of said bone plate; said body portion including a plurality of bone screw receiving apertures configured to overlie the humeral shaft, and a first contact surface configured to contact the exterior surface of the humeral shaft, the first mid-longitudinal axis of said body portion being configured to be substantially aligned with the humeral shaft when said bone plate is attached to the humerus; said first neck portion being configured to bridge the biceps groove of the proximal humerus when said bone plate is attached to the humerus, said first end portion including a second contact surface configured to contact the exterior surface of the lesser tuberosity of the proximal humerus, and said second portion of said first neck portion including at least two bone screw receiving apertures configured to overlie the lesser tuberosity, said at least two bone screw receiving apertures each including an axis, the axes of said at least two bone screw receiving apertures being oriented away from the articular surface of the proximal humerus when said bone plate is attached to the humerus; at least a first set of bone screws, a first bone screw of said first set of bone screws configured to be received through a first of said plurality of bone screw receiving apertures and into the humeral shaft, and a second bone screw of said first set of bone screws configured to be received through a second of said plurality of bone screw receiving apertures and into the humeral shaft, said first and second bone screws of said first set of bone screws facilitating attachment of said bone portion to the humeral shaft; and at least a second set of bone screws, each bone screw of said at least a second set of bone screws having a longitudinal axis, a first bone screw of said second set of bone screws configured to be received through a first of said at least two bone screw receiving apertures and into the lessor tuberosity, a second bone screw of said second set of bone screws configured to be received through a second of said at least two bone screw receiving apertures and into the lessor tuberosity, the longitudinal axes of said first and second bone screws of said second set of bone screws being aligned with the axes of said first and second bone screw receiving apertures and being oriented away from the articular surface of said proximal humerus when said bone plate is attached to the humerus; wherein said first neck portion has a first side and a second side, said first portion of said first neck portion has a first width between said first and second sides, said first width being adjacent said body portion and perpendicular to the second mid-longitudinal axis, and said second portion of said first neck portion has a second width and a third width between said first and second sides, said second width being adjacent said first end portion and between said first end portion and said at least two bone screw receiving apertures of said second portion of said first neck portion, said second width being perpendicular to the second mid-longitudinal axis, said second width being greater than said first width, said third width, and said maximum width of said body portion, said second portion being continuous across said third width between said first and second sides. |
