A comprehensive investigation was immediately initiated on receipt of the complaint.The product was not returned to manufacturer for evaluation, and a thorough investigation could not be completed as the lot number has not been identified/confirmed in this case.Since the screws remains in the patient, no physical, chemical evaluation could be performed, and the root cause of the reported issue could not be ascertained.The extension in the surgical time could be attributed to reopening the patient in order to reposition the misplaced screws.Upon further investigation it was determined that the incident was not product related.
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