MAUDE Adverse Event Report: STRYKER ORTHOPAEDICS-MAHWAH TRI TS BASEPLATE SIZE 2; PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, CO

Catalog Number 5521-B-200

Device Problems Device Difficult to Setup or Prepare (1487); Product Quality Problem (1506)

Patient Problem No Clinical Signs, Symptoms or Conditions (4582)

Event Date 11/29/2023

Event Type  malfunction  

Manufacturer Narrative

Review of the device history records indicate devices were manufactured and accepted into final stock with no relevant reported discrepancies.There have been no similar events for the lot referenced.An evaluation of the device cannot be performed as the device was not returned to the manufacturer.Should additional information become available it will be reported in a supplemental report upon completion of the investigation.

Event Description

After implanting the tibial baseplate with cement being set by over 20 minutes, surgeon tried to impact the insert onto the baseplate.While it failed to seat on the baseplate completely as the locking wire was pushed superiorly at two points on the slot.Then another insert was opened but the same situation occurred.Then the surgeon looked at the tibial baseplate and suspected that its the defect of the baseplate causing the failure instead of the insert itself.He opened another baseplate with one size down to compare in order to inspect any defects.He found out that the two barbs of the used baseplate is different from the new one.The barbs is not flushed with an angle so that it cannot allow the wire of insert to be seated onto baseplate.The surgeon then decided to use the bur with power to wear out a little of the bards and succeeded to seat a new insert.

Manufacturer Narrative

An event regarding assembly issue/appearance involving a triathlon baseplate was reported.The event was confirmed via provided photographs of the device.Method & results: product evaluation and results: the reported device was not returned; however, photographs were provided for review.The photographs show the implanted baseplate compared to another baseplate that was opened.The anterior locking tabs appear different between the two baseplates.The insert appears deformed from the assembly attempt.Clinician review: no medical records were received for review with a clinical consultant.Product history review: review of the device history records indicate devices were manufactured and accepted into final stock with no relevant reported discrepancies.Complaint history review: there have been no other similar events for the lot referenced.Conclusions: it was reported that two poly inserts would not assemble into the baseplate during surgery.The surgeon had to modify the baseplate to get an insert to successfully lock into the baseplate.The reported device was not returned; however, photographs were provided for review.The photographs show the implanted baseplate compared to another baseplate that was opened.The anterior locking tabs appear different between the two baseplates.The insert appears deformed from the assembly attempt.An nc has been raised to address this issue.

Event Description

After implanting the tibial baseplate with cement being set by over 20 minutes, surgeon tried to impact the insert onto the baseplate.While it failed to seat on the baseplate completely as the locking wire was pushed superiorly at two points on the slot.Then another insert was opened but the same situation occurred.Then the surgeon looked at the tibial baseplate and suspected that its the defect of the baseplate causing the failure instead of the insert itself.He opened another baseplate with one size down to compare in order to inspect any defects.He found out that the two barbs of the used baseplate is different from the new one.The barbs is not flushed with an angle so that it cannot allow the wire of insert to be seated onto baseplate.The surgeon then decided to use the bur with power to wear out a little of the bards and succeeded to seat a new insert.

• Brand Name: TRI TS BASEPLATE SIZE 2
• Type of Device: PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, CO
• Manufacturer (Section D): STRYKER ORTHOPAEDICS-MAHWAH; 325 corporate drive; mahwah NJ 07430
• Manufacturer (Section G): STRYKER ORTHOPAEDICS-MAHWAH; 325 corporate drive; mahwah NJ 07430
• Manufacturer Contact: brad curtis ; 325 corporate drive; mahwah, NJ 07430 ; 2018315000
• MDR Report Key: 18378172
• MDR Text Key: 331176381
• Report Number: 0002249697-2023-01589
• Device Sequence Number: 1
• Product Code: MBH
• UDI-Device Identifier: 07613327026306
• UDI-Public: 07613327026306
• Combination Product (y/n): N
• Reporter Country Code: HK
• PMA/PMN Number: K141056
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: Health Professional
• Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date: 03/20/2024

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Date FDA Received: 12/21/2023
• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Device Operator: Health Professional
• Device Catalogue Number: 5521-B-200
• Device Lot Number: OLH7VA
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Date Manufacturer Received: 02/22/2024
• Was Device Evaluated by Manufacturer?: Device Not Returned to Manufacturer
• Date Device Manufactured: 10/03/2023
• Is the Device Single Use?: Yes
• Is This a Reprocessed and Reused Single-Use Device?: No
• Type of Device Usage: Initial
• Patient Sequence Number: 1
• Patient Outcome(s): Other