Fixation of bone implants

Abstract

The present invention provides an orthopaedic implant including an articulating tray, a support tray connected to the articulating tray and a bone ingrowth layer connected to the support tray. The articulating tray has an articulating surface and an interface surface opposed to the articulating surface. The support tray has a first connecting surface that is connected to the interface surface and a second connecting surface that is opposed to the first connecting surface and connected to the bone ingrowth layer. Also provided is an orthopaedic implant with an articulating component and a body component connected to the articulating component. The articulating component has an articulating surface and an interface surface opposed to the articulating surface. The body component has a first surface connected to the interface surface, a second surface opposed to the first surface and at least one protrusion that extends away from the second surface.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This is a non-provisional application based upon U.S. provisional patent application Ser. No. 61 / 789,158, entitled “FIXATION OF BONE IMPLANTS”, filed Mar. 15, 2013, which is incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to orthopaedic implants, and, more particularly, to knee implants.[0004]2. Description of the Related Art[0005]The knee is a common site of orthopaedic problems in patients that require surgery. The cartilage in the knee is especially vulnerable to injury throughout a patient's lifetime and generally does not repair itself like other tissues in the body. When the cartilage in a knee is damaged or destroyed, the femur and tibia, which are normally separated and lubricated by the cartilage, can rub together, which causes various problems.[0006]If surgical intervention to repair the cartilage of the knee is insufficient, a knee implant is usually...

AI Technical Summary

Benefits of technology

The patent text describes a new invention that reduces the need for bone cement during surgery. Bone cement is a type of material used to hold bones together, and it can be time-consuming and increase the risk of revision surgery in the future. This new invention aims to save time and minimize the need for revision surgeries.

Problems solved by technology

The knee is a common site of orthopaedic problems in patients that require surgery.

The cartilage in the knee is especially vulnerable to injury throughout a patient's lifetime and generally does not repair itself like other tissues in the body.

When the cartilage in a knee is damaged or destroyed, the femur and tibia, which are normally separated and lubricated by the cartilage, can rub together, which causes various problems.

Bone cement has a putty-like consistency and is prone to spreading during surgery.

When the surgeon presses the knee implant on to the bone cement on the prepared bone surface, there is a risk of bone cement squeezing out from between the knee implant and the prepared bone surface if an excessive amount of bone cement or pressing force is applied.

This loose bone cement is usually removed during surgery, which prolongs the surgery.

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