Ceramic implant coated with sheats of tendon replacement arthroplasty for Kienbock's disease. Stress and pressure distribution analysis.

为了确定陶瓷月骨替代腕关节作为治疗Kienb_ck病的可能性，我们用有限元法（FEM）分析了五个腕关节模型的应力分布;一个正常的手腕，一个月骨被移除，一个有螺旋肌腱替换，一个有陶瓷芯的螺旋肌腱替换，另一个是覆盖着肌腱的陶瓷月骨有限元分析的结果进行了比较的压力分布分析的手腕关节上使用的压力敏感膜和测量的压力的桡月骨关节上的触觉传感器。月骨陶瓷种植体模型腕关节应力和压力分布均匀。盘绕的腱模型和陶瓷芯模型都不能抵抗施加的力。这些结果表明，陶瓷月骨植入物可以防止腕部塌陷。

To determine the usefulness of a ceramic lunate replacement for the wrist joint as a possible treatment for Kienb_ck's disease, we analyzed stress distribution by the finite element method (FEM) in five wrist joint models ; a normal wrist, one with the lunate bone removed, one with a coiled tendon replacement, one with a coiled tendon replacement with a ceramic core, and one with a ceramic lunate replacement coated with sheets of tendon. The results of FEM analyses were compared with those of pressure distribution analyses on the wrist joint using pressure-sensitive film and measurement of pressure on the radio- lunate joint with a tactile sensor. Stress and pressure were well-distributed in the Wrist joint of the ceramic lunate implant model. the coiled tendon model nor ceramic core model was able to resist applied force. These results demonstrate that the ceramic lunate implant prevents carpal collapse.