Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1988-09-09
1990-02-27
Apley, Richard J.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
A61F 234
Patent
active
049042653
ABSTRACT:
A cementless acetabular implant intended for use in instances of a bony defect in the pelvis at the acetabular cavity requiring substantial rebuilding of the acetabulum by use of bone graft material. It includes a substantially rigid metallic hemispherically shaped support cup for contiguous reception with the bone within the acetabular cavity. A flange extends outwardly from a peripheral rim of the support cup for supportive engagement on bone stock located beyond the acetabular cavity. The flange also serves to contain the bone graft material. The outer convex surface of the support cup is porous, as is a medial surface of the flange, to accept bone ingrowth. A bearing insert of low friction material for receiving the ball of a femoral prosthetic component is mounted in contiguous engagement with an inner surface of the support cup. Screws may be used to initially fix the support cup to the bone and a central apical hole provides visual confirmation during implantation that the support cup is completely seated into the acetabulum.
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Evarts C. McCollister
MacCollum Maureen A.
Tarr Richard R.
Apley Richard J.
Boehringer Mannheim Corporation
Isabella David J.
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