Heimke G, Griss P
Arch Orthop Trauma Surg (1978). 1981;98(3):165-71. doi: 10.1007/BF00632973.
The results of the complete and detailed clinical evaluation are compared with the original design criteria. It is shown that most of them stood the test. Those aspects which did not meet the expectations are discussed in detail: The occurrence of very little and biologically tolerable wear during the initial running-in period will be further reduced by a considerable improvement of the material properties. The few cases of severe wear had been associated with clinically exceptional situations, the analysis of which allows for suggestions to avoid such situations. The material improvements and all other steps taken to increase the safety margin considerably against fractures of the ceramic ball are described in detail. In addition, the attention is paid to some necessary clinical precautions.
将完整且详细的临床评估结果与原始设计标准进行比较。结果表明，其中大多数都经受住了考验。对那些未达预期的方面进行了详细讨论：在初始磨合阶段出现的极少且生物可耐受的磨损，将通过材料性能的大幅改善而进一步降低。少数严重磨损的情况与临床上的特殊情况相关，对其进行分析可为避免此类情况提供建议。详细描述了材料改进以及为大幅提高陶瓷球抗断裂安全系数而采取的所有其他措施。此外，还关注了一些必要的临床预防措施。
