| http://www.w3.org/ns/prov#value | - To remove an implant, such as a polyaxial screw 400, the instrument first engages a first portion of the implant, for example, the head of a polyaxial screw, by retracting the handle 50 to retract the inner shaft, aligning the tip protrusions with a corresponding opening on the implant and releasing the handle to return the inner shaft to a rest position, causing the tabs to expand and engage corr
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