Results: Drawertest of 28 cases were positive, which fitted exploration result completely.
结果：28例术中抽屉试验均为阳性，与探查结果完全符合。
2
The posterior drawertest (PDT) posterior instability of the knee improved to 1.10 after operation.
后抽屉试验后方不稳定较术前平均恢复1.1度。
3
There is mechanical interlock for the drawer units, they can be opened only if the switch is at break-off state. The drawers have apparent position indication for close~ test and off.