The implant surgery occurred on (b)(6) 2012 at (b)(6).After approximately five years, pseudo-arthrosis was diagnosed as a symptomatic issue.The patient also experienced modic changes, which led to continuous pain and ultimately, a revision surgery on (b)(6) 2016.The revision surgery involved removing the standalone tm-s device and implanting a new tm-s, 7mm in height (part no.06-101-03071, lot no.63138197), with a supplemental fixation system of four screws and a base plate.There was no harm or delay in surgery.The removed tm-s implant was returned and a visual inspection was made.Material within the graft hole was identified, but the material composition could not be confirmed.The x-rays were analyzed and the observations could not be directly linked to any issues.Since the device¿s lot number could not be retrieved, the dhr could not be reviewed.Causation between pseudo-arthrosis and pain-causing modic changes cannot be definitely concluded.No further action is necessary at this time.
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