| 摘要 |
<p>The prosthesis consists of proximal (P) and distal (D) sections with engaging female and male surfaces, both of which are stepped and tapering. The thickness (E1,E2) of the stepped portions (P1-P4) of the proximal section, reduces from one end of the joint to the other. The thickness (e1,e2) of the corresponding portions of the distal section, increases in the same direction. The generating surface of each of the stepped portions forms an angle of under 5 degrees, and preferably 3 degrees, to the axis (X-X') of the prosthesis' impaction. Alternatively, the angle of taper of the steps can be different. The two sections of the prosthesis are fixed together by a threaded rod (F) engaging with a threaded hole in the distal section.</p> |
