During the procedure when the surgeon was installing the inferior tcs bone screw, the bone screw did not follow the pilot hole created by the bone awl.Instead the screw formed its own trajectory into the bone.The trajectory of the bone screw was poor, leading to a jackknife position of the implant within the disc space.The surgeon decided to explant the implant.Rep believes the wrong size implant was chosen by the surgeon.The returned implant was examined and found to be within specification.Device history records indicate implant meet spec prior to being released to the field.
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