求救！－翻译问题

医疗方面,全髋关节置换
once the configuration of the trial has been estabished, it is necessary to perform a
trial reduction of the joint to verify that the optimum configuration has been achieved.

里面的trial reduction是什么意思，还有trial译成试配物是否可以？

trial是名词，修饰reduction，

perform a trial reduction of the joint 直译就是“进行joint的试reduction”