Distal radial fracture set and method for repairing distal radial fractures

• US 5,006,120 A
• Filed: 10/10/1989
• Issued: 04/09/1991
• Est. Priority Date: 10/10/1989
• Status: Expired due to Term

• Current Assignee: Zimmer Technology Incorporated (Zimmer Biomet Holdings, Inc.)
• Original Assignee: Peter R. Carter
• Inventors: Carter, Peter R.
• Primary Examiner(s): Hafer, Robert A.
• Assistant Examiner(s): BROWN, MICHAEL A
• Application Number:
  US07/418,582
• Time in Patent Office: 546 Days
• Field of Search: 606/69-75, 128/92 YV, 128/92 YP
• US Class Current: 606/71
• CPC Class Codes: A61B 17/8061 specially adapted for particular bones A61B17/70 and A61B17/74 take precedence
• CPC Class Codes: A61B 17/809 with bone-penetrating elements, e.g. blades or prongs bone staples A61B17/0642; intramedullary nails with a plate at an end A61B17/7233
• CPC Class Codes: Y10S 606/902 Cortical plate specifically adapted for a particular bone

Abstract

A bone fixation set for the treatment of distal radial fractures is provided. The device includes a plate having countersunk bone screw holes and a blade constructed for placement in the capitate of the radius. A method for implanting the bone fixation set is also provided.

Claims

1. A bone fixation set for the treatment of distal radial fractures comprising:

a fixation plate, said plate having a plurality of bone screw holes formed therethrough, said plate having a proximal end and a distal end, said plate having an upper surface and a lower surface, said lower surface of said plate constructed to substantially conform to the dorsal surface of the radius bone, said upper surface and said lower surface of said plate being depressed proximate said bone screw holes formed through said plate; and

an attachable blade, said blade comprising a blade insertion portion and an attachment portion, said attachment portion of said blade being attachable to said distal end of said plate.

2. The bone fixation set for the treatment of distal radial fractures of claim 1, wherein a wing section extends substantially perpendicularly from said blade insertion portion.

3. The bone fixation set for the treatment of distal radial fractures of claim 1, wherein said bone fixation set comprises a plurality of attachable blades.

4. The bone fixation set for the treatment of distal radial fractures of claim 1, wherein said upper surface and said lower surface of said plate are depressed at the distal end of said plate, whereby said bone fixation set has a low profile along its length.

5. The bone fixation set for the treatment of distal radial fractures of claim 1, wherein said distal end of said plate and said attachment portion of said blade have holes formed therethrough whereby said blade can be attached to said plate by placing a retaining screw through said holes defined through said attachment portion of said blade and said distal end of said plate.

6. The bone fixation set for the treatment of distal radial fractures of claim 1, wherein said plurality of bone screw holes formed through said plate have a decreasing dimension from said upper surface to said lower surface whereby a bone screw can be countersunk through each said bone screw hole.

7. The bone fixation set for the treatment of distal radial fractures of claim 1, wherein said plate decreases in width from said distal end to said proximal end of said plate.

8. The bone fixation set for the treatment of distal radial fractures of claim 1, further comprising a plurality of bone screws, said bone screws being constructed to be countersunk through said bone screw holes formed on said plate.

9. The bone fixation set for the treatment of distal radial fractures of claim 1, wherein said plate has a substantially constant thickness.

10. A method for repairing a distal radial fracture comprising:

extending the hand and forearm such that said hand and said forearm are extended to their full lengths, thereby reducing the fracture;

repositioning radial bone fragments to their proper anatomical positions within said forearm;

drilling screw holes through said radial bone;

forming concave depressions in said radial bone about each of said screw holes;

threadably securing a bone fixation plate to said radial bone by driving bone screws through said bone fixation plate and into said fractured radius.

11. The method for repairing a distal radial fracture of claim 10, wherein said method further comprises removably attaching an external fixator to the index finger and the radial bone whereby the hand and forearm are temporarily fixed in their extended positions.

12. The method for repairing a distal radial fracture of claim 11, wherein said method further comprises removing said external fixator from the index finger and the radial bone subsequent to securing the bone fixation plate to the fractured radius.

13. The method for repairing a distal radial fracture of claim 10, wherein said method further comprises temporarily pinning said radial bone fragments whereby said fragments are retained in their proper anatomical positions prior to drilling screw holes through said radial bone.

14. The method for repairing a distal radial fracture of claim 13, wherein said method further comprises removing the temporary pins used to pin radial bone fragments in their corrected positions subsequent to securing said bone fixation plate to said radial bone.

15. The method for repairing a distal radial fracture of claim 10, wherein said method further comprises:

cutting a groove in the cortex of the capitate of said radial bone, said groove being dimensioned to receive a blade of a bone fixation set;

inserting said blade through the groove formed in the capitate of said radial bone and into said radial bone; and

securing said blade to said bone fixation plate.

16. A method for repairing a distal radial fracture comprising:

extending the hand and forearm such that said hand and said forearm are extended to their full lengths, thereby reducing the fracture;

repositioning radial bone fragments to their proper anatomical positions within said forearm;

drilling bone screw holes through said radial bone;

cutting a groove in the cortex of the capitate of said radial bone, said groove being dimensioned to receive a blade of a bone fixation set;

threadably securing a plate of a bone fixation set to said radial bone by driving bone screws through said plate and into said fractured radius;

inserting said blade through said groove formed in the capitate of said radial bone and into said radial bone; and

securing said blade to said plate of said bone fixation device.

17. A low-profile bone fixation plate for the treatment of fractures comprising:

a bone fixation plate having a plurality of bone screw openings formed therethrough for receiving bone screws, said plate having an upper surface and a lower surface, said upper surface and said lower surface being depressed toward one another proximate said bone screw openings, wherein said bone screw openings taper inwardly from said upper surface to said lower surface whereby bone screws implanted in the bone are recessed within the fixation plate.