Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1996-03-28
1997-12-30
Isabella, David
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
623 66, A61F 230
Patent
active
057024561
ABSTRACT:
A method is provided for reducing the amount of wear particulates generated by a total joint orthopaedic implant. The implant consists of two matched articulating components. The method includes the steps of placing the total joint orthopaedic implant in a fluid bath and articulating the implant in the fluid bath for at least 1,000 cycles. The articulation may be performed in three stages. In the first, the implant is articulated under a load of substantially 0.1-500 Newtons with sliding speeds of substantially 0.01-0.5 meters per second. During a second stage the articulation takes place under a load of substantially 200-2,500 Newtons with sliding speeds of substantially 0.01-0.5 meters per second. In the third stage the articulation takes place under a load of substantially 2,500-10,000 Newtons at sliding speeds of 0.5-2.0 meters per second.
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Murall Jasty; "Clinical Reviews: Particulate Debris and Failure of Total Hip Replacements"; Journal of Applied Biomaterials; 4, 273-276; (1993).
Dowson, et al.; "Wear Particles: From the Cradle to the Grave"; The Institute of Tribology, Leeds University; Tribology Series, 21; Symposium Sep. 1991.
Isabella David
The University of Kentucky Research Foundation
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