Porous metal implants with bone cement

Abstract

An orthopaedic implant for filling a bone void and a method of using the same. The orthopaedic implant comprises an open porous metal portion and a bone cement portion. At a first surface region, the open porous metal portion facilitates bone and / or soft tissue ingrowth into the pores of the first surface region of the open porous metal. At a second surface region, the open porous metal facilitates reception of the bone cement into the pores of the second surface region of the open porous metal. The open porous metal portion of the orthopaedic implant may also be formed of a plurality of porous metal fragments aggregated together with the cement portion of the orthopaedic implant. Additionally, the orthopaedic implant may be pliable and thereby capable of being molded to the shape of a void in a bone.

Description

CLAIM OF PRIORITY[0001]This application claims the benefit of priority under 35 U.S.C. §119(e) of Monaghan et al., U.S. Provisional Patent Application Ser. No. 61 / 584,463, entitled “POROUS METAL IMPLANTS WITH BONE CEMENT”, filed on Jan. 9, 2012, which is herein incorporated by reference in its entirety.BACKGROUND[0002]1. Field of the Disclosure[0003]The present invention relates to filling voids in bones. More particularly, the present invention relates to orthopaedic implants having a porous metal portion and bone cement portion for filling voids in bones, and methods for using the same.[0004]2. Description of the Related Art[0005]Bone voids may result for a number of reasons. For example, joint injuries or disease may result in the formation of defects and voids in a bone. Additionally, many orthopaedic surgical procedures require drilling into bone, thereby creating bone voids. Further, the locations at which bone voids occur, and the size of bone voids, are patient specific. Thu...

AI Technical Summary

Benefits of technology

The present patent provides a porous metal implant with bone cement for filling voids in bones. The implant has a first layer with a lot of small pores and a second layer with a smaller number of larger pores. There is also a curable fixative portion that fills in some of the space between the layers and partially fills in the larger pores. The layers are designed to promote bone growth and provide a scaffold for bone regeneration. The thickness of the layers and the spacing between the pores can be tailored to enhance the healing process.

Problems solved by technology

Bone voids may result for a number of reasons.

For example, joint injuries or disease may result in the formation of defects and voids in a bone.

Additionally, many orthopaedic surgical procedures require drilling into bone, thereby creating bone voids.

Thus, the use of standard implants for filling bone voids may not be possible.

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