AF椎弓根螺钉
AF pedicle screw
AF pedicle screws
AF pedicle screw spinal system
AO微型钛金属板及螺钉
AO titanium plate and screw
AO自身攻丝螺钉
AO self-tapped cortical screw
Magerl经关节螺钉
Magerl transarticular screw
凹槽椭圆头螺钉
oval fillister-head screw
半沉头不脱出螺钉
oval slotted countersunk head unloosing screw
半沉头机器螺钉
oval countersunk fillister head machine screw