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No device was returned as no device problem was alleged, no radiographs were available so the complaint could not be confirmed.The patient post operative physical activity is unknown.Due to a lack of information available no root cause could be determined however the information provided suggests insufficient correction or progression of pathology as possible cause or contributors.No additional investigation can be completed.Manufacturing review: no lot code information was provided so a complete manufacturing review could not be completed.Although review of ncmr records and similar events notes no non-conformances with respect to material type, treatments or dimensions that may have caused or contributed to this mode of failure.Label review: "contraindications contraindications include, but are not limited to: 3.Patients with known sensitivity to the materials implanted.4.Patients who are unwilling to restrict activities or follow medical advice.5.Patients with inadequate bone stock or quality.6.Patients with physical or medical conditions that would prohibit beneficial surgical outcome." "potential risks identified with the use of this system, which may require additional surgery, include: nonunion or delayed union.Neurological, vascular or visceral injury, metal sensitivity or allergic reaction to a foreign body, tissue reactions including macrophage and foreign body reactions adjacent to implants.Decrease in bone density due to stress shielding, degenerative changes or instability of segments adjacent to fused vertebral levels, malalignment of anatomical structures (i.E., loss of normal spinal contours or change in height), pain, discomfort or abnormal sensations due to the presence of the device, nerve damage due to surgical trauma.Paralysis." "warnings, cautions and precautions the subject device is intended for use only as indicated.The implantation of spinal systems should be performed only by experienced spinal surgeons with specific training in the use of this spinal system because this is a technically demanding procedure presenting a risk of serious injury to the patient.Correct selection of the implant is extremely important.The potential for success is increased by the selection of the proper size of the implant.While proper selection can minimize risks, the size and shape of human bones present limitations on the size and strength of implants.Metallic internal fixation devices cannot withstand the activity levels and/or loads equal to those placed on normal, healthy bone.These devices are not designed to withstand the unsupported stress of full weight or load bearing alone.When implanted at adjacent levels, it is important to select the appropriate length of nuvasive modulus alif system bone screw/anchoring blade and confirm trajectory under intraoperative fluoroscopy in order to avoid potential screw/blade impingement.Caution must be taken due to potential patient sensitivity to materials.Do not implant in patients with known or suspected sensitivity to the aforementioned materials." ".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 patient¿s activity level will dictate the longevity of the implant." ".Based on fatigue testing results, when using the modulus alif system, the physician/surgeon should consider the levels of implantation, patient weight, patient activity level, other patient conditions, etc., which may impact on the performance of this system.Notching, striking, and/or scratching of implants with any instrument should be avoided to reduce the risk of breakage." "patient education: 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." "pre-operative warnings 1.Only patients that meet the criteria described in the indications should be selected.2.Patient condition and/or predispositions such as those addressed in the aforementioned contraindications should be avoided.5.Care should be used during surgical procedures to prevent damage to the device(s) and injury to the patient." "post-operative warnings during the postoperative phase it is of particular importance that the physician keeps the patient well informed of all procedures and treatments.Damage to the weight-bearing structures can give rise to loosening of the components, dislocation and migration, as well as other complications.To help ensure the earliest possible detection of such catalysts of device dysfunction, the devices must be checked periodically postoperatively, using appropriate radiographic techniques." "method of use please refer to the surgical technique for this device." "information to obtain a surgical technique manual or should any information regarding the products or their uses be required, please contact your local representative or nuvasive directly." (b)(4).
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