Dartmouth Hitchcock Medical Center, Hanover, New Hampshire, USA.
J Arthroplasty. 2012 Feb;27(2):324.e1-4. doi: 10.1016/j.arth.2011.02.025. Epub 2011 Mar 25.
A notable feature of retrieved ceramic-on-ceramic hips is metal transfer on the femoral head, which is an important alteration of the bearing surface. This report documents metal transfer streaks on a ceramic femoral head resulting from discrete subluxations, which occurred intraoperatively during reduction and stability testing. An important implication is that metal transfer can occur whenever a femoral head is reduced into the liner during surgery or from in vivo subluxation/dislocation. If a ceramic liner is recessed below a raised metal rim, care should be taken to prevent head-to-rim contact during intraoperative reductions and stability testing. If metal transfer occurs during final surgical reduction of the hip, its presence may remain undetected, and detrimental effects are present from the time of surgery.
陶瓷对陶瓷髋关节的一个显著特点是股骨头表面的金属转移，这是承载表面的重要变化。本报告记录了术中复位和稳定性测试过程中，离散半脱位导致陶瓷股骨头出现金属转移条纹的情况。这意味着只要在手术过程中股骨头被压入衬垫，或者体内半脱位/脱位，就会发生金属转移。如果陶瓷衬垫低于凸起的金属边缘，那么在术中复位和稳定性测试过程中应小心防止头与边缘接触。如果髋关节最终手术复位过程中发生金属转移，其存在可能未被发现，并且从手术开始就存在有害影响。
