MAUDE Adverse Event Report: STRYKER SPINE-US ES2 INTEGRATED BLADE SCREW SIZE L 6.5X45MM; THORACOLUMBOSACRAL PEDICLE SCREW SYSTEM

Model Number 482804645

Device Problems Device Operates Differently Than Expected (2913); Migration (4003)

Patient Problems Neuropathy (1983); Pain (1994); Injury (2348); Numbness (2415)

Event Date 12/15/2014

Event Type  Injury  

Event Description

The patient reported that a cage which was implanted on (b)(6) 2014, had slid out from l4/l5 and he will undergo corrective surgery(b)(6) 2018 due to excruciating pain.Patient reported the same type of pain radiating down right leg, neuropathy, and numbness in right foot, which got worse since (b)(6) 2014, when symptoms started.Device will be removed.In addition, patient reported that x-rays show, cage moved about 3/4 inch toward posterior and right and physician stated, "it is partially fused in a bad place.He has to cut it out." patient additionally reported that, "the ct scans show halo around screws which might indicate loosening according to the physician.".

Manufacturer Narrative

Method: x-ray review, ct scan review, nc/capa history review, labelling review, risk assessment.Result: the migration of the cage was confirmed upon x-ray images review however, screw migration could not be confirmed from the provided images.Device was not returned and lot# not provided therefore,device inspection, device history review, and complaint history review could not be performed.No product related issue or surgical technique related issues were observed in the images provided.The surgical technique notes the following: the surgeon must warn the patient that the device cannot and does not replicate the flexibility, strength, reliability or durability of normal healthy bone, that the implant can break or become damaged as a result of strenuous activity or trauma, and that the device may need to be replaced in the future.If the patient is involved in an occupation or activity which applies inordinate stress upon the implant (e.G., substantial walking, running, lifting, or muscle strain) the surgeon must advice the patient that resultant forces can cause failure of the device.Patients who smoke have been shown to have an increased incidence of non-unions.Surgeons must advise patients of this fact and warn of the potential consequences.Prior to adequate maturation of the fusion mass, implanted spinal instrumentation may need additional help to accommodate full load bearing.External support may be recommended by the physician from two to four months postoperatively or until x-rays or other procedures confirm adequate maturation of the fusion mass; external immobilization by bracing or casting be employed.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.Conclusion: the exact root cause of the reported event could not be determined.However some of the plausible contributing factor includes: patient non-fusion, too much instantaneous load, implant under sizing.

Event Description

The patient reported that a cage which was implanted on (b)(6) 2014, had slid out from l4/l5 and he will undergo corrective surgery (b)(6) 2018 due to excruciating pain.Patient reported the same type of pain radiating down right leg, neuropathy, and numbness in right foot, which got worse since (b)(6) 2014, when symptoms started.Device will be removed.In addition, patient reported that x-rays show, cage moved about 3/4 inch toward posterior and right and physician stated, "it is partially fused in a bad place.He has to cut it out." patient additionally reported that, "the ct scans show halo around screws which might indicate loosening according to the physician.".

• Brand Name: ES2 INTEGRATED BLADE SCREW SIZE L 6.5X45MM
• Type of Device: THORACOLUMBOSACRAL PEDICLE SCREW SYSTEM
• Manufacturer (Section D): STRYKER SPINE-US; 2 pearl court; allendale NJ 07401
• MDR Report Key: 7635183
• MDR Text Key: 112229463
• Report Number: 0009617544-2018-00152
• Device Sequence Number: 1
• Product Code: NKB
• UDI-Device Identifier: 07613327002188
• UDI-Public: (01)07613327002188
• Combination Product (y/n): N
• PMA/PMN Number: K122845
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: consumer
• Type of Report: Initial,Followup
• Report Date: 11/21/2018

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Date FDA Received: 06/25/2018
• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: Yes
• Device Operator: No Information
• Device Model Number: 482804645
• Device Catalogue Number: 482804645
• Device Lot Number: UNKNOWN
• Was Device Available for Evaluation?: No
• Date Manufacturer Received: 10/27/2018
• Is This a Reprocessed and Reused Single-Use Device?: No
• Patient Sequence Number: 1
• Patient Outcome(s): Required Intervention
• Patient Age: 44 YR