Expanded fixation of bones

• US 8,177,819 B2
• Filed: 08/09/2010
• Issued: 05/15/2012
• Est. Priority Date: 04/22/2004
• Status: Active Grant

• Current Assignee: Acumed Llc (Berkshire Hathaway Incorporated)
• Original Assignee: Acumed Llc (Berkshire Hathaway Incorporated)
• Inventors: Huebner, Randall J., Tarcau, Benone
• Primary Examiner(s): Robert, Eduardo C
• Assistant Examiner(s): CARTER, TARA ROSE E
• Application Number:
  US12/853,144
• Publication Number:
  US 20100324602A1
• Time in Patent Office: 645 Days
• Field of Search: 606280-299, 606/70, 606/71, 606/86.B, 623/21.11, 623/21.12
• US Class Current: 606/281
• CPC Class Codes: A61B 17/80 Cortical plates , i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
• CPC Class Codes: A61B 17/8004 with means for distracting or compressing the bone or bones
• CPC Class Codes: A61B 17/8061 specially adapted for particular bones A61B17/70 and A61B17/74 take precedence

Abstract

System, including methods, apparatus, and kits, for expanded bone fixation with bone plates. A bone plate and an extension plate may be provided. The bone plate may be secured to a proximal portion of a humerus and overlapping the greater tuberosity of the humerus using fasteners received in openings defined by the bone plate. The extension plate may be attached to the bone plate and the humerus using (a) a fastener disposed in an aperture defined by the first end region and in threaded engagement with the bone plate and (b) a fastener received in an aperture defined by the second end region and extending into the humerus. The attached extension plate may extend from a position over the greater tuberosity to a position over the lesser tuberosity of the humerus such that the intermediate region is disposed over a biceps tendon.

Claims

1. A method of bone fixation, comprising:

providing a bone plate and an extension plate, the extension plate including opposing first and second end regions and an intermediate region disposed between the first and second end regions, each of the first and second end regions and the intermediate region having a plate structure;

securing the bone plate to a proximal portion of a humerus and overlapping the greater tuberosity of the humerus using fasteners received in openings defined by the bone plate; and

attaching the extension plate to the bone plate and the humerus using (a) a fastener disposed in an aperture defined by the first end region and in threaded engagement with the bone plate and (b) a fastener received in an aperture defined by the second end region and extending into the humerus,

wherein the attached extension plate extends from a position over the greater tuberosity to a position over the lesser tuberosity of the humerus such that the intermediate region is disposed over a biceps tendon.

2. The method of claim 1, wherein the step of providing a bone plate provides a bone plate including a head portion connected to a body portion, wherein the width of the head portion is greater than the width of the body portion, and wherein the extension plate overlaps the head portion of the bone plate after the step of attaching the extension plate.

3. The method of claim 2, wherein the step of securing a bone plate includes a step of securing the head portion of the bone plate to the humerus and overlapping the greater tuberosity.

4. The method of claim 1, wherein the extension plate includes an inner surface and at least one integral projection extending from the inner surface, further comprising a step of disposing the integral projection in an opening of the bone plate.

5. The method of claim 1, wherein the bone plate includes opposing inner and outer surfaces, wherein the inner surface faces the humerus after the step of securing the bone plate, and wherein the extension plate abuts the outer surface of the bone plate after the step of attaching the extension plate.

6. The method of claim 1, wherein a portion of the bone plate is disposed between the extension plate and the humerus after the step of attaching the extension plate.

7. The method of claim 1, wherein the bone plate defines a long axis, and wherein the extension plate extends transversely to the long axis after the step of attaching the extension plate, at least near a point of contact or closest approach between the bone plate and the extension plate.

8. The method of claim 1, wherein the step of attaching the extension plate is performed after the step of securing the bone plate.

9. The method of claim 1, wherein the extension plate includes an overlapping region that overlaps the bone plate and an extension region that extends away from the bone plate, and wherein the extension region is longer than the overlapping region after the step of attaching the extension plate.

10. The method of claim 1, wherein the aperture defined by the second end region of the extension plate is a locking aperture, and wherein the step of attaching the extension plate includes a step of disposing a fastener in threaded engagement with the locking aperture.

11. The method of claim 1, wherein the step of attaching the extension plate includes a step of placing a fastener through the aperture defined by the second end region and into the lesser tuberosity.