| 摘要 |
A femoral head shaft prothesis is disclosed with an oblong shaft portion (2, 3) which can be implanted into a marrow cavity (not shown) of an upper thigh bone and can be attached therein by means of a cement layer. According to the invention raised areas in the form of nub rows (17, 18, 19, 21) with small surfaces by comparison to the size of the circumference of the shaft portion (2, 3) are formed at a small number of appropriate locations on said circumference of said shaft portion to serve as spacers in relation to the inner wall of the marrow cavity. The lower shaft portion (2) is formed to be cylindrical and is intended to be inserted into a cylindrically drilled marrow cavity of the femoral neck stump. In this manner a uniform cement layer thickness with only minimal interruptions is achieved, ensuring primary and long-term stability.
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