Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1991-05-15
1993-06-08
Isabella, David
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
606 89, 606 86, 623 18, A61F 230, A61F 234, A61F 104
Patent
active
052174999
ABSTRACT:
An acetabular implant for a hip joint prosthesis comprising a metal cup shell (2) adapted to be secured in the acetabulum of a patient. The metal cup shell (2) has a hemispherical cavity (6) into which a liner may be inserted to provide a spherical bearing surface for the ball portion of the hip joint. Screws (26, 28) may be inserted through three apertures (20, 22 and 24) in the metal cup shell (2) into the ilium, ischium and pubic ramus of the patient. A continuous circumferential flange (8) is provided around the opening of the cavity (6). The flange (8) has an outside diameter which is at least 10% greater than the outside diameter of the remainder of the metal cup shell (2) at its widest point. The circumferential flange (8) provides a bearing surface (10) for contacting the rim (12) of the acetabulum of the patient when the metal cup shell (2) is fitted.
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Socket Fixation using a Metal-backed Acetabular Component for Total Hip Replacement; The Journal of Bone and Joint Surgery, vol. 64-A; pp. 745-748.
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Advances in Total hip Replacement by W. Harris.
Griswold Gary L.
Hohenshell Jeffrey J.
Isabella David
Kirn Walter N.
Minnesota Mining and Manufacturing Company
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