Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1995-11-15
1997-12-30
Brittingham, Debra S.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
623 18, A61F 236, A61F 232, A61F 230
Patent
active
057024839
ABSTRACT:
A prosthetic hip assembly comprising an acetabular component having a bearing surface which forms a first articulating surface and a femoral component including a spherically shaped head defining a second articulating surface. The acetabular component includes a first surface treatment for promoting the attachment of fibrous tissue to the acetabular component. The femoral component includes a second surface treatment for promoting the attachment of fibrous tissue to the femoral component. The first and second surface treatments cause fibrous tissue to attach to the femoral component and the acetabular component to form a capsule between the components when the components are implanted in a patient. Any wear debris created by the first and second articulating surfaces rubbing against one another is confined within the capsule to substantially prevent the migration of the wear debris into interfaces between the components and their associated bones. The capsule further operates to substantially prevent metal and cement debris, remaining at the interfaces between the components and their associated bones, from migrating into the fibrous tissue enclosure and toward the articulating surfaces of the components.
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