The complaint device is not being returned, therefore is unavailable for a physical evaluation.Furthermore, no lot numbers were supplied which precludes conducting a batch history review or a lot specific search in the complaints handling system.Therefore, we cannot determine what caused the user to experience the reported event; we cannot discern a root cause for the reported failure mode.One possible root cause as identified in the product ifu states; ¿titanium alloys contain metals which may stimulate allergic hyper-sensitive responses by the immune system.The metals used are titanium, aluminum, vanadium and nickel (ti, al, v and ni).When sensitivity is anticipated, appropriate preoperative testing should be conducted¿.At this point in time, no corrective action is required and no further action is warranted.However, depuy synthes mitek will continue to track any related complaints within this device family as a means of monitoring the extent with which this complaint is observed in the field.
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