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Patient 1
GENERAL INFORMATION: THE SCREW ARRIVED IN DECONTAMINATED CONDITION. CONSEQUENCES FOR THE PATIENT ACCORDING TO THE AVAILABLE INFORMATION, THERE WERE NO NEGATIVE CONSEQUENCES FOR THE PATIENT. INVESTIGATION: THE RECEIVED SCREW EXHIBITS NO DEFECTS, THE LOCKING RING IS IN ITS CORRECT POSITION INVESTIGATION: WE MADE A VISUAL INSPECTION OF THE COMPLAINED SCREW. EXCEPT A SLIGHT WEAR ON THE THREAD, MOST LIKELY CAUSED BY THE SCREWING IN AND OUT OF THE SCREW, WE FOUND NO ABNORMALITIES OR DEFECTS. THE LOCKING RING IS IN ITS CORRECT POSITION BATCH HISTORY REVIEW: THE MANUFACTURING DOCUMENTS HAVE BEEN CHECKED AND FOUND TO BE ACCORDING TO SPECIFICATION VALID DURING THE TIME OF PRODUCTION. THERE ARE NO FURTHER COMPLAINTS WITH THIS LOT AT HAND CONCLUSION AND ROOT CAUSE: THE ROOT CAUSE FOR THE PROBLEM IS MOST PROBABLY USAGE RELATED. RATIONALE: THE POPPING OUT OF LOCKING RINGS IS NORMALLY CAUSED BY DRIVING THE SCREWDRIVER IN THE HEAD OF THE SCREW WITH A WRONG (TOO LOW) ANGLE. THE COMPLAINT SAMPLE HAS ITS LOCKING RING IN THE CORRECT POSITION, WE FOUND NO DEVIATION TO THE SPECIFICATION (MAYBE THE RING WAS PUSHED IN THE HEAD OF THE SCREW AGAIN AFTER SURGERY). ACCORDING TO SOP (B)(4) (CORRECTIVE ACTION & PREVENTIVE ACTION) A CAPA IS NOT NECESSARY.