| 摘要 |
The invention relates to a coupling means (3) for a femur prosthesis (1) comprising an adaptor element (6) and a ball element (4), which elements (6, 4) are each provided with a blind central bore (7, 5), wherein the bore (7) of the adaptor elememt (6) is suitable in shape and dimension to enable placing over a fixed stem end (2) of a femur prosthesis (1) and wherein the bore (5) of the ball element (4) is suitable in shape and dimension to enable placing over the adaptor element (6), and wherein, when arranged over each other, the ball element (4) is mounted for free rotation relative to the fixed stem end (2), wherein the ball element (4) consists of a spherical ball head (9) which transposes into a substantially cylindrical ball collar (10), which ball element (4) is provided with a blind central bore (5) which extends through the whole ball collar (10) into a considerable part of the ball head (9).
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