| 摘要 |
PCT No. PCT/SE94/01233 Sec. 371 Date Apr. 19, 1995 Sec. 102(e) Date Apr. 19, 1995 PCT Filed Dec. 21, 1994 PCT Pub. No. WO95/17140 PCT Pub. Date Jun. 29, 1995The invention relates to a cup-shaped member for a hip joint prosthesis, for implantation into a cavity in the bone tissue in the acetabulum, comprising an acetabular cup (1) made of metal a ceramic material or any other suitable material, preferably of titanium, the outside of said cup being rotationally symmetrical around a central axis of symmetry. The outer side of the cup (1), that is the side which is to face the bone tissue, is provided with at least one circumferential bead (5) close to the edge of the cup (1), said bead (5) having a barb-like shape in section and consequently allowing the cup (1) to be pushed into said cavity but counter-acting the removal of said cup (1) from said cavity, said outer side including said bead(s) (5) being provided with a rough structure serving as a file when said cup (1) is moved or rotated in said cavity. |
