Bone plate

A bone plate having a longitudinal axis, comprising:

• a) an oblong base plate including an anchoring portion extending towards a first end of the base plate and a coupling portion extending towards a second end of the base plate;
• b) a first sliding plate connected to the coupling portion so that it is slideable relative to the coupling portion parallel to the longitudinal axis;
• and
• c) at least one first plate hole located in the anchoring portion and at least one second plate hole located in the sliding plate,
• wherein at least one of the base plate and the first sliding plate includes a retaining arrangement limiting motion of the first sliding plate relative to the base plate in a direction perpendicular to a top surface of the bone plate while not impeding the sliding of the sliding plate relative to the base plate parallel to the longitudinal axis,
• wherein the at least one second plate hole includes with a rigid locking arrangement allowing a rigid connection between a screw head of a bone screw insertable therein,
• wherein the retaining arrangement includes an elongated recess penetrating into the base plate from the top surface to a depth T,
• wherein, at the depth T, a supporting surface extends parallel to the top surface such that the first sliding plate is supported at the gliding surface perpendicularly to the top surface, and
• wherein the bone plate includes a bottom surface which, when the bone plate is mounted on a bone in a desired configuration, faces the bone.

A device, comprising:

• a bone plate including a) an oblong base plate including an anchoring portion extending towards a first end of the base plate and a coupling portion extending towards a second end of the base plate;
• b) a sliding plate slidably connected to the coupling portion for sliding movement relative thereto parallel to the longitudinal axis;
• and c) at least one first plate hole located in the anchoring portion and at least one second plate hole located in the sliding plate;
• and
• at least one bone screw for each of the base plate and the sliding plate,
• wherein at least one of the base plate and the sliding plate includes a retaining arrangement limiting motion of the sliding plate relative to the base plate in a direction perpendicular to a top surface of the bone plate without impeding the sliding of the sliding plate relative to the base plate,
• wherein the at least one second plate hole includes a rigid locking arrangement allowing a rigid connection between a screw head of a bone screw insertable therein,
• wherein the retaining arrangement includes an elongated recess penetrating the base plate from the top surface to a depth T,
• wherein, at the depth T, a supporting surface extends parallel to the top surface supporting the sliding plate thereon perpendicularly to the top surface, and
• wherein the bone plate includes a bottom surface which, when the bone plate is mounted on a bone in a desired configuration, faces the bone.

A bone plate having a longitudinal axis, comprising:

• a) an oblong base plate including an anchoring portion extending towards a first end of the base plate and a coupling portion extending towards a second end of the base plate;
• b) a sliding plate slidably connected to the coupling portion for motion parallel to the longitudinal axis;
• and
• c) at least one first plate hole located in the anchoring portion and at least one second plate hole located in the sliding plate, wherein the first plate hole is a combination hole;
• wherein, at least one of the base plate and the sliding plate includes a retaining arrangement formed as an elongated recess extending into the base plate to a predetermined depth smaller than a depth of the base plate to limit movement of the sliding plate relative to the base plate in a direction perpendicular to a top surface of the bone plate while permitting slideable movement of the sliding plate parallel to the longitudinal axis, and
• wherein, when the sliding plate is received in the retaining arrangement, a top surface of the sliding plate is parallel to the top surface of the base plate.