Total elbow arthroplasty system
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United States of America Patent
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-
Dec 19, 2000
Grant Date -
N/A
app pub date -
Dec 9, 1998
filing date -
Dec 31, 1997
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention is directed to novel two piece total elbow arthroplasty systems. In particular, the present invention is directed to total elbow implants, bone cutting guides for the installation of the implants, and methods for total elbow replacement. The apparatus and methods of the present invention are useful in the treatment of elbow osteoarthritis in canines, as well as in other species, including other quadrupeds and humans. The two piece implant of the present invention has an isometric humeral component and a radioulnar component that has an isometric articular surface. The components have stems for mounting in the medullary canals of the respective bones, which are angled so as to approximate the configuration of the original humerus, radius and ulna. In addition, novel cutting guides are provided to facilitate the removal of arthritic cartilage and a minimal amount of adjacent bone, thereby allowing the implantation of the two components (humeral and radioulnar), which are held in place by cement, such as polymethylmethylacrylate (PMMA). The result is a pain-free joint that has a near normal range of motion. Finally, the invention is directed to methods for implanting the novel endoprosthesis of the present invention in a canine elbow joint.
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Family
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