Visual, dimensional, material and functional analysis could not be performed as the device was not returned.Device and complaint history records review could not be performed as a valid lot code was not provided and could not be obtained.Since the device was not returned, an exact cause of the reported event could not be determined.Inserting the screw with more force than normal, on a bone, can compound torsional forces at the screw/inserter interface, compromising the insertion feature of the screw head.As mentioned in the product ifu, to fully seat the inserter into the screw-head, the inserter has to be completely aligned with the screw.Ensuring that the screw is securely engaged in the inserter tip can assist in distributing forces evenly throughout the screw/inserter interface, reduce torque overloading, and reduce failures as reported.
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