Matsuda Y, Yamamuro T
Department of Orthopaedic Surgery, Faculty of Medicine, Kyoto University, Japan.
Med Prog Technol. 1994;20(3-4):185-9.
We report on six cases of metallosis which developed in bipolar hip prosthesis due to ceramic screws used for fixation of bone grafts. Two patients experienced severe metallosis due to abnormal abrasion of the femoral head. At the revision surgery, proliferated black synovia was found. Analyses of the retrieved prostheses revealed numerous small particles of alumina ceramic on the inner surface of the bearing insert of UHMWPE. These particles came from the broken ceramic screws, and scraped away the metallic femoral head resulting in severe metallosis. In four patients, the outer head came into direct contact with ceramic screws and mild metallosis was observed at revision surgery.
我们报告了6例因用于固定骨移植的陶瓷螺钉导致双极髋关节假体发生金属沉着病的病例。2例患者因股骨头异常磨损而出现严重的金属沉着病。在翻修手术中，发现有增生的黑色滑膜。对取出的假体进行分析发现，超高分子量聚乙烯（UHMWPE）承重内衬的内表面有大量氧化铝陶瓷小颗粒。这些颗粒来自断裂的陶瓷螺钉，刮擦金属股骨头，导致严重的金属沉着病。在4例患者中，外股骨头与陶瓷螺钉直接接触，在翻修手术中观察到轻度金属沉着病。
