| 摘要 |
The invention relates to a non-cemented acetabulum for a total hip prosthesis, comprising an outer metal cup (1) fixed to the bone, and an insert (2) made of plastic and having an outer surface (6, 7) complementing the inner surface (4, 5) of the cup (1) in order to be able to be engaged by force in the said cup. The insert (2) comprises a spherical inner surface (9) intended to receive the head of the femoral prosthesis and, around its opening, an outer and transverse annular rim (8) which bears against the annular rim (1a) of the cup (1) surrounding the opening thereof. The outer surface of the insert (2) comprises a circular cylindrical portion (7) extending from its rim (8), coaxial therewith, and engaging in a complementary cylindrical portion (5), of the same radius, situated on the inner surface of the cup (1) and starting from the opening thereof, characterised in that the cylindrical portion (5) on the inner surface of the cup (1) is undulated in the circumferential direction. <IMAGE>
|
