Broken bioceramic used in a computer-assisted reconstruction of the frontal skull bone

We report a complication occurring after the use of a bioceramic material for a three-dimensional reconstructive cranioplasty. A patient who had a satisfactory aesthetic result after frontal skull bone reconstruction with bioceramic injured his head after falling out of bed. The bioceramic material fragmented and the three fragments migrated over each other to form a lump. The bioceramic material had to be surgically removed. Care must be taken when using the fragile bioceramic material for reconstructive purposes, especially when patients are at risk of frequent falls.     

中医正骨手法中的力学机制

中医正骨手法作为一种以力的实施为主的治疗手段,其本质应该与物理学中力的相互作用有关,所以可以试行用经典力学原理进行研究。我们认为,纷繁复杂的中医正骨手法可能存在一些误区和重复,可以通过其力学实质的研究,变得简明扼要、浅显易懂,易于交流传授和仿真模拟,最终实现“人机对话”、“计算机辅助医疗正骨”的梦想。我们将大部分正骨手法归类简化为：“轴向用力”,“侧方用力”,“旋转用力”3类,现分别举例分析如下。