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Device and method for bicompartmental arthroplasty

a technology of bicompartmental arthroplasty and a device, applied in the field of devices and methods for bicompartmental arthroplasty, can solve the problems of sacrifice and achieve the effect of preserving the integrity of anterior and posterior cruciate ligaments

Inactive Publication Date: 2005-08-04
ROLSTON LINDSEY R
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention provides a device and method for bicompartmental arthroplasty of a patient's knee. The device includes a femoral prosthesis component and a tibial prosthesis component that can be securely attached to the patient's femur and tibia, respectively. The femoral component has a surface that replicates a femoral condyle and a concave surface that articulates with the patella, while the tibial component has a concave surface that matches the femoral component. The device can be used to treat a patient with a diseased patella or a diseased medial or lateral compartment of the knee. The method involves making incisions, preparing the bone ends, and securing the components to the bone. The device and method provide a minimally invasive solution for restoring the natural movement and stability of the knee joint."

Problems solved by technology

Unfortunately total knee replacement results in sacrifice of the anterior and posterior cruciate ligaments.

Method used

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  • Device and method for bicompartmental arthroplasty
  • Device and method for bicompartmental arthroplasty
  • Device and method for bicompartmental arthroplasty

Examples

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Embodiment Construction

[0023]FIGS. 1A and B illustrate a medial femoral prosthesis component 10 for use in connection with a combination device for bicompartmental arthroplasty of the knee. The prosthesis 10 is essentially unshaped with one leg of the “u” forming the anterior (front) portion 20 of the prosthesis and the other leg of the “u” forming the posterior (rear) portion 22 of the prosthesis and a base portion 21 connecting the anterior and posterior portions 20 and 22. The medial femoral prosthesis component 10 has an interior first surface 12 which is configured to be secured to a surgically prepared portion of the distal end of the medial compartment of the femur 26 as shown in FIG. 2 as will be described in more detail below. The exterior surface 14 of component 10 has a concave trochlear groove 16 formed on the anterior surface of the leg 20 of prosthesis component 10. A convex second surface 18 is formed on the medial side of the base portion 21 of prosthesis 10 and is configured to replicate ...

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Abstract

Disclosed is a device and method of bicompartmental arthroplasty of the knee. The device permits arthroplasty of the medial or lateral and patellofemoral compartments of the knee while leaving the opposite compartments and the anterior and posterior cruciate ligaments intact. The device provides a femoral prosthesis component that includes a trochlear surface and a tibial prosthesis component which can be secured to the tibia. The femoral component is essentially “u” shaped having an anterior leg upon which the trochlear surface is positioned and a posterior leg which engages the posterior surface of the distal end of the femur. The femoral component also has a convex articulating surface which engages a concave articulating surface of the tibial prosthesis component to approximate the articulation of a healthy knee. The patellar prosthesis is applied to the posterior surface of the patella and articulates with the trochlear exterior surface of the femur.

Description

PRIORITY INFORMATION [0001] This application is a divisional application of application Ser. No. 10 / 370,002, titled DEVICE AND METHOD FOR BICOMPARTMENTAL ARTHROPLASTY, the entirety of which is incorporated herein by reference.FIELD OF THE INVENTION [0002] This invention relates to a device and method for bicompartmental arthroplasty for resurfacing of either the medial joint and the patellofemoral joint of the knee or the lateral and patellofemoral joint of the knee in order to treat the pain associated with arthritis. The present device and method resurfaces either the medial or lateral joints depending on which compartment is diseased, but does not resurface both the lateral (outside) and medial (inside) compartment of the knee at the same time. BACKGROUND OF THE INVENTION [0003] Total knee joint replacement (arthroplasty) is a common and very successful surgery for people with degenerative arthritis (osteoarthritis) of the knee. Over 450,000 patients a year in the United States u...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61F2/00A61F2/30A61F2/38A61F2/46
CPCA61F2/30767A61F2310/00353A61F2/38A61F2/3877A61F2002/30364A61F2002/30574A61F2002/30878A61F2002/3895A61F2002/4631A61F2220/0033A61F2310/00017A61F2310/00023A61F2310/00029A61F2310/00131A61F2310/00179A61F2310/00239A61F2/30771
Inventor ROLSTON, LINDSEY R.
Owner ROLSTON LINDSEY R
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