Objective To evaluate the feasibility of curing the nonunion of humerus shaft fracture with One Arm Multifunction External Fixator plus Bone Transplantation. 目的分析单臂多功能外固定器+骨治疗肱骨干骨折不愈合的可行性。
The residual stress arising from the volume shrinkage on curing can be measured by means of measuring nonequilibrium voltage of bridge which consists of a strain gage resistance immersing into surface layer of resin as an arm. 把电阻应变丝埋入树脂界面层并作为一臂接入一直流电桥,测定等温固化时电桥的不平衡电压可以求取因固化反应树脂体积收缩而引起的残余应力。