Carlsson A S, Gentz C F, Linder L
Acta Orthop Scand. 1983 Jun;54(3):396-402. doi: 10.3109/17453678308996591.
In 70 total hip arthroplasties exchanged because of mechanical loosening of the stem prosthesis, localized bone resorption or scalloping was found in 33 cases. In 19 of the 33 cases the process started at the level of the tip of the stem, which in 15 cases was found to be in direct contact with cortical bone as observed in the radiographs obtained immediately after the primary surgery. In 37 failures without scalloping this metal-to-bone contact was less common. It is concluded that localized bone resorption may occur as a result of mechanical stress and in the absence of deep infection. It is also suggested that the phenomenon might be avoided by proper cementing technique and centering of the tip of the stem, perhaps with the help of a centering device.
在因柄部假体机械性松动而进行翻修的70例全髋关节置换术中，33例发现有局部骨吸收或骨侵蚀。在这33例中的19例，该过程始于柄部尖端水平，其中15例在初次手术后立即获得的X线片上显示与皮质骨直接接触。在37例无骨侵蚀的失败病例中，这种金属与骨的接触较少见。得出结论，局部骨吸收可能是机械应力的结果且不存在深部感染。还表明，或许借助对中装置，通过适当的骨水泥技术和柄部尖端对中可避免该现象。
