MAUDE Adverse Event Report: SMITH & NEPHEW, INC. LGN DISTAL FEM CUTTING BLOCK; PROSTHESIS, KNEE, FEMOROTIBIAL, SEMI-CONSTRAINED.

Model Number	71434403
Medical Device Problem Codes	Naturally Worn (2988); Incomplete or Inadequate Connection (4037)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	04/06/2021
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that during a tka the lgn distal fem cutting block was worn out and did not stay tightened down.The procedure was successfully completed without delay using the same device.This happened when the instruments were out of the patient hence no patient injury or other complications were reported.
Additional Manufacturer Narrative
H3, h6: the associated device, used in treatment, was returned and evaluated.A visual inspection of the returned device confirmed the stated failure mode.The hex screw slot of the device's knob is severely worn preventing the device from functioning as intended.The device also has several nicks and scratches as well as wear.The device shows signs of extensive use.A review of complaint history did not reveal additional complaints for the listed batch.A review of the manufacturing records did not reveal a manufacturing abnormality that could have caused or contributed to the reported incident.At this time, we do not have reason to suspect that the product failed to meet any product specifications at the time of manufacture.This device is a reusable instrument that can be exposed to numerous surgeries.Damage from prolonged use, misuse or rough handling are likely probable causes of the reported event.We recommend that all reusable instruments be routinely inspected for wear and damage and replaced as necessary.Based on this investigation, the need for corrective action is not indicated.Should 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: LGN DISTAL FEM CUTTING BLOCK
• Common Device Name: PROSTHESIS, KNEE, FEMOROTIBIAL, SEMI-CONSTRAINED.
• Manufacturer (Section D): SMITH & NEPHEW, INC.; 1450 brooks rd.; memphis TN 38116
• MDR Report Key: 11735232
• Report Number: 1020279-2021-03546
• Device Sequence Number: 17150446
• Product Code: HRY
• UDI-Device Identifier: 03596010550163
• UDI-Public: 03596010550163
• Combination Product (Y/N): N
• Initial Reporter State: MT
• Initial Reporter Country: US
• PMA/510(K) Number: K121393
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: health professional
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 05/18/2021

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Operator of Device: Health Professional
• Device Model Number: 71434403
• Device Catalogue Number: 71434403
• Device Lot Number: 12CM00399
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 04/19/2021
• Initial Date Received by Manufacturer: 04/06/2021
• Supplement Date Received by Manufacturer: 05/18/2021
• Initial Report FDA Received Date: 04/27/2021
• Supplement Report FDA Received Date: 05/18/2021
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Patient Sequence Number: 1