Bone plate system and method

A bone fusion method comprising:

• providing at least a first bone screw and a bone plate, the bone plate having at least first and second screw-receiving hole structures defining respectively a first hole and a second hole, at least the first hole structure including:
• an eccentric portion adjacent a first seating area, a head of the first bone screw being shaped to engage the eccentric portion and via camming action to bias bone in an inferior fusion area into dynamic compression as the first bone screw is advanced, the first bone screw being positioned at a first orientation when the first bone screw is seated in the first seating area;
• and
• a cowl portion that at least partially defines a second seating area, the second seating area being positioned with respect to the first seating area such that the first bone screw is positioned at a second orientation when the first bone screw is seated in the second seating area, the second orientation being different from the first orientation and the first bone screw being sized to enable cross-screw compression of an inferior fusion area;
• the first bone screw being seatable in either the first seating area or the second seating area;
• screwing the first bone screw into bone in first the orientation or the second orientation.