Compression hip screw plate

• US 5,658,339 A
• Filed: 01/05/1996
• Issued: 08/19/1997
• Est. Priority Date: 01/05/1996
• Status: Expired due to Fees

• Current Assignee: Orthomatrix, Inc.
• Original Assignee: Wright Medical Technology Incorporated (Stryker Corporation)
• Inventors: Shappley, Ben R., Tronzo, Raymond G., Ferrante, Joseph M.
• Primary Examiner(s): Weiss, John G.
• Assistant Examiner(s): CUDDIHY, FRANCIS KEVIN
• Application Number:
  US08/583,430
• Time in Patent Office: 592 Days
• Field of Search: 606/65, 606/66, 606/67, 606/68, 623/18, 623/22, 623/23
• US Class Current: 606/67
• CPC Class Codes: A61B 17/746 the longitudinal elements coupled to a plate opposite the femoral head

Abstract

A compression hip screw plate for a hip screw system used to compress a proximal femur having a shaft with a lateral aspect and a neck extending from the shaft at an anteverted angle, both of which follow the anatomical contours of the proximal femur. The compression hip screw plate may include a side plate having a face side attachable to the lateral aspect of the shaft of the proximal femur; and a barrel having a first end extendable through the lateral aspect of the shaft of the proximal femur and into the neck of the proximal femur, and having a second end attached to the side plate with the first end extending away from the face side of the barrel at an anteverted angle. The compression hip screw plate may include a side plate with an anterior bow to match the natural femur.

Claims

1. A compression hip screw plate comprising:

(a) a side plate having a first end, a second end remote from said first end of said side plate, a longitudinal axis extending between said first and second ends of said side plate, and a face surface; and

(b) a barrel having a first end, a second end remote from said first end of said barrel, and a longitudinal axis extending between said first and second ends of said barrel;

said barrel being attached to said side plate with said longitudinal axis of said barrel anteverted with respect to a coronal plane extending substantially perpendicular to said face surface of said side plate at the intersection of said longitudinal axis of said barrel and said face surface of said side plate, and with said longitudinal axis of said barrel non-parallel with respect to a sagittal plane extending substantially parallel to said face surface of said side plate at the intersection of said longitudinal axis of said barrel and said face surface of said side plate.

2. The compression hip screw plate of claim 1 in which said longitudinal axis of said side plate is bowed about an axis extending substantially perpendicular to the sagittal plane extending substantially parallel to said face surface of said side plate at the intersection of said longitudinal axis of said barrel and said face surface of said side plate.

3. The compression hip screw plate of claim 1 in which said longitudinal axis of said side plate is bowed anteriorly from said first end thereof to said second end thereof about an axis extending substantially perpendicular to the sagittal plane extending substantially parallel to said face surface of said side plate at the intersection of said longitudinal axis of said barrel and said face surface of said side plate.

4. The compression hip screw plate of claim 1 in which said longitudinal axis of said side plate is bowed first posteriorly from said first end of said side plate and then anteriorly to said second end of said side plate about axes extending substantially perpendicular to the sagittal plane extending substantially parallel to said face surface of said side plate at the intersection of said longitudinal axis of said barrel and said face surface of said side plate.

5. A compression hip screw plate comprising:

(a) a side plate having a first end, a second end remote from said first end of said side plate, a longitudinal axis extending between said first and second ends of said barrel, and a face surface;

said longitudinal axis of said side plate being bowed about an axis extending substantially perpendicular to a sagittal plane extending substantially parallel to said face surface of said side plate; and

(b) a barrel having a first end, a second end remote from said first end, and a longitudinal axis extending between said first and second ends;

said second end of said barrel being attached to said first end of said side plate.

6. An improved hip screw system for fixing a proximal femur having an anteriorly bowed shaft with a lateral aspect and a neck extending from said shaft at an anteverted angle;

wherein said improvement comprises a compression hip screw plate including;

(a) an elongated side plate having a face side attachable to said lateral aspect of said shaft of said proximal femur, a first end, a second end remote from said first end of said side plate, and a longitudinal axis extending between said first and second ends of said side plate with said longitudinal axis of said side plate bowed anteriorly about an axis extending substantially perpendicular to a sagittal plane extending substantially parallel to said face surface of said side plate; and

(b) a barrel having a first end extendable through said lateral aspect of said shaft of said proximal femur and into said neck of said proximal femur, having a second end attached to said side plate, and having a longitudinal axis extending between said first and second ends of said barrel with said barrel attached to said face side of said side plate, with said longitudinal axis of said barrel anteverted with respect to a coronal plane extending substantially perpendicular to said face surface of said side plate at the intersection of said longitudinal axis of said barrel and said face surface of said side plate, and with said longitudinal axis of said barrel non-parallel with respect to the sagittal plane extending substantially parallel to said face surface of said side plate at the intersection of said longitudinal axis of said barrel and said face surface of said side plate.