MAUDE Adverse Event Report: SMITH & NEPHEW, INC. LAG/COMP SCREW KIT 100/95; NAIL, FIXATION, BONE

Model Number	71677100
Medical Device Problem Code	Migration or Expulsion of Device (1395)
Health Effect - Clinical Code	Failure of Implant (1924)
Date of Event	08/13/2021
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that, after an internal fixation surgery had been performed on (b)(6) 2021, post-op x-rays showed that the screws are backing out of an intertan 11.5mm x 20cm 125d nail, despite being locked in the case.It is unknown how this adverse event was solved.Current health status of patient is also unknown.
Additional Manufacturer Narrative
Internal complaint reference: (b)(4).The device, used in treatment, was not returned for evaluation but the pictures were reviewed, and the backing out was confirmed.The clinical/medical investigation concluded that, the provided images were reviewed and confirm the report but appear for multiple subjects and noted that not particular to the complaint patient so cannot make specific conclusions related to the specific root cause.It could be initial placement of the lag and compression screws within the femoral head, reduction and stability of the fracture or user technique and cannot conclude the root cause.Without patient-specific supporting documentation a thorough medical investigation cannot be performed.The root cause and/or patient outcome beyond that which was documented cannot be confirmed nor concluded.The intertan nail is implantable; however, we cannot rule out the potential risk of micro-motion and/or migration of the screws.In addition to, the possibility of irritation/discomfort/inflammation and/or pain.Should any additional, relevant clinical information become available, the case will be re-evaluated.Therefore, no further clinical/medical assessment is warranted at this time.A review of the manufacturing records did not reveal a manufacturing abnormality that could have caused or contributed to the reported incident.A complaint history review found related failures for the listed batch; this failure mode will be monitored for future complaints for any necessary corrective actions.A review of the risk management file and instructions for use documents revealed this failure mode was previously identified.At this time, we have no reason to suspect that the product failed to meet any product specifications at the time of manufacture.Some potential probable causes for this event could include but not limited to surgical technique, patient anatomy or lack of ingrowth.Based on this investigation, the need for corrective action is not indicated.Should the device or additional information be received, the complaint will be reopened.No further investigation is warranted for this complaint; however, we will continue to monitor for future complaints and investigate as necessary.We consider this investigation closed.

• Brand Name: LAG/COMP SCREW KIT 100/95
• Common Device Name: NAIL, FIXATION, BONE
• Manufacturer (Section D): SMITH & NEPHEW, INC.; 1450 brooks rd.; memphis TN 38116
• MDR Report Key: 12410765
• Report Number: 1020279-2021-06683
• Device Sequence Number: 3350546
• Product Code: JDS
• UDI-Device Identifier: 03596010563323
• UDI-Public: 03596010563323
• Combination Product (Y/N): N
• Initial Reporter Country: NZ
• PMA/510(K) Number: K040212
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2021
• Reporter Type: Manufacturer
• Report Source: company representative,foreig
• Initial Reporter Occupation: Other
• Type of Report: Initial,Followup
• Report Date (Section B): 10/04/2021

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: Health Professional
• Device Model Number: 71677100
• Device Catalogue Number: 71677100
• Device Lot Number: 20DT37358
• Was Device Available for Evaluation?: No
• Initial Date Received by Manufacturer: 08/13/2021
• Supplement Date Received by Manufacturer: 10/01/2021
• Initial Report FDA Received Date: 09/01/2021
• Supplement Report FDA Received Date: 10/04/2021
• 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