| 摘要 |
A hip cup for use as an acetabular component in a hip prosthesis, comprising a shell part (1) having an at least partially convex outer surface (11), which shell part (1) is insertable in a cavity (16) having an inner surface (17) that is substantially defined by the outer surface of a segment of a sphere, the outer surface (11) of the shell part (1) substantially corresponding to the outer surface of a part of an ellipsoid, the arrangement being such that during positioning, the shell part (1) contacts the longitudinal edge of the cavity (16) at least by a circumferential edge, while a space (24) is formed between the inner surface (17) of the cavity (16) and the apex of the shell part (1).
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