System for stabilization of fractures of convex articular bone surfaces including subchondral support structure

• US 20050165395A1
• Filed: 01/21/2005
• Published: 07/28/2005
• Est. Priority Date: 01/23/2004
• Status: Active Grant

• Current Assignee: Biomet Incorporated (Zimmer Biomet Holdings, Inc.)
• Original Assignee: Hand Innovations LLC (Johnson & Johnson)
• Inventors: Castaneda, Javier E., Orbay, Jorge L., Cavallazzi, Cesare
• Granted Patent: US 7,001,388 B2
• Time in Patent Office: Days
• US Class Current: 606/60
• CPC Class Codes: A61B 17/68 Internal fixation devices , including fasteners and spinal fixators, even if a part thereof projects from the skin bone staples A61B17/0642
• CPC Class Codes: A61B 17/72 Intramedullary pins, nails or other devices A61B17/744 takes precedence
• CPC Class Codes: A61B 17/7233 with special means of locking the nail to the bone
• CPC Class Codes: A61B 17/725 with locking pins or screws of special form
• CPC Class Codes: A61B 17/744 the longitudinal elements coupled to an intramedullary nail
• CPC Class Codes: A61B 17/746 the longitudinal elements coupled to a plate opposite the femoral head
• CPC Class Codes: A61B 17/8057 the interlocking form comprising a thread
• CPC Class Codes: A61B 17/8061 specially adapted for particular bones A61B17/70 and A61B17/74 take precedence
• CPC Class Codes: Y10S 606/902 Cortical plate specifically adapted for a particular bone

Abstract

A fracture fixation system is provided for a fracture of a head portion of a long bone which has subchondral bone defining a convex articular surface. The system includes a plate element positionable on the long bone substantially opposite the head portion of the long bone and on a first side of the fracture, and a post coupled to the plate and into the head portion of the bone and across the fracture. A cross peg is coupled to the post to provide support of the subchondral bone.

Claims

1. A proximal humeral fracture fixation system, comprising:

a) a plate including first and second post holes;

b) a first post mechanically coupled in said first post hole in a rotationally fixed manner;

c) a first rigid cross support extending through a distal portion of said first post; and

d) a second post mechanically coupled in said second post hole.

2. A proximal humeral fracture fixation system according to claim 1, further comprising:

a second rigid cross support extending through a distal portion of said second post.

3. A proximal humeral fracture fixation system according to claim 1, wherein:

said first and post elements extend in an anterior-posterior plane.

4. A proximal humeral fracture fixation system according to claim 1, wherein:

said first and post elements extend in a proximal-distal plane.

5. A proximal humeral fracture fixation system, comprising:

a) a plate;

b) a post element extending from said plate portion; and

c) at least one rigid support element extending from a distal portion of said first post element,

wherein said plate, said post element and said support element extend transverse to each other.

6. A proximal humeral fracture fixation system, comprising:

a) a proximal humeral plate including a head portion with a post hole and a shaft portion with at least one bone screw hole;

b) a post insertable into said post hole and including a peg hole;

c) first means for rotationally fixing said post in said a post hole such that said peg hole is in a predetermined orientation; and

d) a rigid cross peg extending through said peg hole.

7. A proximal humeral fracture fixation system according to claim 6, wherein:

wherein said cross peg extends in an anterior-posterior plane.

8. A proximal humeral fracture fixation system according to claim 6, wherein:

said post includes a plurality of peg holes, and said rigid cross peg can extend through any of said peg holes.