MAUDE Adverse Event Report: STRYKER SPINE-US XIA 3 TITANIUM ROD DIAM 6MM TI ALLOY L 480MM; THORACOLUMBOSACRAL PEDICLE SCREW SYSTEM

Catalog Number	48233480
Medical Device Problem Code	Fracture (1260)
Health Effect - Clinical Codes	No Consequences Or Impact To Patient (2199); Injury (2348)
Date of Event	06/26/2018
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that a patient underwent revision surgery due to the breaking of two rods initially implanted in 2006 in a scoliosis - long fixation surgery.The physician reported the rods broke without causing trauma to the patient.The rods were revised.The first rod was kept entirely and recomposed by a connector.The second rod was removed and replaced by a stump.
Additional Manufacturer Narrative
The reported event was confirmed via visual inspection of the returned device.Only a portion of the device was returned.As the lot number was not present on the portion of the device that was returned, a manufacturing review could not be completed.As the original surgery was long fixation, there is a section of fixation at the top and bottom of the construct, and a section of non fixation in the middle.The existing curve and the placement of the devices allowed for a large bending moment to exist within the non-fixed region, which can eventually cause a fatigue breakage of the rod, which was shown on x rays.Additionally, the devices were implanted for about 12 years.According to the ifu, "while the expected life of spinal implant components is difficult to estimate, it is finite.These components are made of foreign materials which are placed within the body for the potential fusion of the spine and reduction of pain.However, due to the many biological, mechanical and physicochemical factors which affect these devices but cannot be evaluated in vivo, the components cannot be expected to indefinitely withstand the activity level and loads of normal healthy bone.Fatigue fracture of spinal fixation devices, including screws and rods, has occurred." as the entire device was not returned, a definite root cause cannot be determined.The most likely root cause is a combination of the configuration of the construct creating a large bending moment, which created repeated loads over time on a localized area and lead to the eventual fracture of the rod.The length of implantation also contributed to the event as well.
Event or Problem Description
It was reported that a patient underwent revision surgery due to the breaking of two rods initially implanted in 2006 in a scoliosis - long fixation surgery.The physician reported the rods broke without causing trauma to the patient.The rods were revised.The first rod was kept entirely and recomposed by a connector.The second rod was removed and replaced by a stump.

• Brand Name: XIA 3 TITANIUM ROD DIAM 6MM TI ALLOY L 480MM
• Common Device Name: THORACOLUMBOSACRAL PEDICLE SCREW SYSTEM
• Manufacturer (Section D): STRYKER SPINE-US; 2 pearl court; allendale NJ 07401
• MDR Report Key: 7687573
• Report Number: 0009617544-2018-00173
• Device Sequence Number: 10921207
• Product Code: NKB
• UDI-Device Identifier: 07613154918454
• UDI-Public: 07613154918454
• Combination Product (Y/N): N
• Initial Reporter Country: IT
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2006
• Device Explanted Year: 2018
• Reporter Type: Manufacturer
• Report Source: health professional
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 09/26/2018

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: Yes
• Operator of Device: No Information
• Device Catalogue Number: 48233480
• Device Lot Number: N/A
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 08/06/2018
• Initial Date Received by Manufacturer: 07/02/2018
• Supplement Date Received by Manufacturer: 08/29/2018
• Initial Report FDA Received Date: 07/13/2018
• Supplement Report FDA Received Date: 09/26/2018
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Required Intervention
• Patient Age: 48 YR