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A provided lateral radiograph and communication with the sales rep confirmed fusion had not yet been achieved and the screw had fractured.It is unknown if the patient followed post-operative physical restrictions.The patient is reported to have a neurological issues with a violent tick to one side.Though the root cause of the screw fracture is undetermined the information provided suggests patient related factors may have been the cause or a contributor.No additional investigation can be completed, no revision planned dates or information could be provided.Labeling review ".Contraindications include, but are not limited to:.Patients who are unwilling to restrict activities or follow medical advice." ".Potential risks identified with the use of this system, which may require additional surgery, include:.Bending, fracture or loosening of implant component(s).Loss of fixation.Nonunion or delayed union.Pain, discomfort or abnormal sensations due to the presence of the device." ".These devices can break when subjected to the increased load associated with delayed union or nonunion.Internal fixation appliances are load-sharing devices that hold bony structures in alignment until healing occurs.If healing is delayed, or does not occur, the implant may eventually loosen, bend, or break.Loads on the device produced by load bearing and by the patients activity level will dictate the longevity of the implant." ".Based on fatigue testing results, when using the coroent small interlock system and coroent small interlock 2 system, the physician should consider the levels of implantation, patient weight, patient activity level, other patient conditions, etc., which may impact on the performance of this system." ".Preoperative instructions to the patient are essential.The patient should be made aware of the limitations of the implant and potential risks of the surgery.The patient should be instructed to limit postoperative activity, as this will reduce the risk of bent, broken or loose implant components.The patient must be made aware that implant components may bend, break or loosen even though restrictions in activity are followed." ".Patient condition and/or predispositions such as those addressed in the aforementioned contraindications should be avoided&".
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