Morscher E W
Hip. 1983:190-203.
The differences between prostheses fixed with and without cement consist mainly of the design and the nature of the surface of the implant. The shapes of the sockets to be implanted without cement show a wide variety--cylinder, square, conus, ellipsoid with and without threads. The hemispherical shape, which was chosen for the acetabular component of the isoelastic hip joint, does not disturb the natural form and function of the hip joint since the outer surface is closely adapted to the original subchondral bone layer. Undesired stress concentrations therefore are eliminated. The fixation of the noncemented cup is secured by threads, pegs, screws, etc. and by ingrowth of bony tissue in the grooves of the surfaces. Except for some special forms, most of the stems are based on the self-locking principle. All prosthesis models show preparations that increase the surface area (ribs, wings, corrugations, or rims).
有骨水泥固定和无骨水泥固定的假体之间的差异主要体现在植入物的设计和表面性质上。无骨水泥植入的髋臼杯形状多样——有带螺纹和不带螺纹的圆柱、方形、圆锥、椭球形。等弹性髋关节的髋臼部件选用半球形，因其外表面紧密贴合原始软骨下骨层，不会干扰髋关节的自然形态和功能，从而消除了不必要的应力集中。无骨水泥杯通过螺纹、钉、螺钉等以及骨组织长入表面凹槽来实现固定。除了一些特殊形式外，大多数柄部基于自锁原理。所有假体型号都有增加表面积的设计（肋条、翼片、波纹或边缘）。
