Country of complaint: (b)(6).Tantalum pins were not visible in x-ray.Primary surgery; (b)(6) 2015.Revision surgery: none.Involved component: none.Operation was delayed over 15 minutes.Summary: the surgeon used two prospace implants for this surgery.When he checked the x-ray image while inserted the second implant, tantalum pins were not visible in x-ray image.Due to this issue, he was not able to confirm the position of the implant.Therefore, he removed the second implant from the pt.After removal, the surgeon tried to see the implant using x-ray and the tantalum pins were not shown in the image.The first implant, which had no defect was from a different batch number.
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The following components were received for analysis: so420p, lot: 51987639, manufactured: 02/17/2014.The tantalum x-ray markers were not visible on x-ray.The surgeon assumed the markers were not inside the implant.The manufacturing documentation has been checked for all of the above listed lot numbers.There is no indication for a manufacturing error or material defect.The x-ray markers of this device were made from titanium.This batch of prospace was manufactured according to the specification that was valid at the time of manufacture.Since then, the prospace have been modified to comprise tantalum markers.
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