MAUDE Adverse Event Report: STRYKER ORTHOPAEDICS-MAHWAH TRIATHLON PRIM TIB BASEPLATE - CEMENTED; PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, CO

Catalog Number	5520-B-300
Medical Device Problem Code	Unstable (1667)
Health Effect - Clinical Code	Injury (2348)
Date of Event	10/21/2019
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
It was noted that the device is not available for evaluation.If additional information is received, it will be provided in a supplemental report upon completion of the investigation.Review of the device history records indicate devices were manufactured and accepted into final stock with no reported discrepancies.There have been no other events for the lot referenced.
Event or Problem Description
It was reported by the sales rep that patient reported to surgeon that experience ligament laxity and instability.Initial placement of implant was appropriate.Surgeon trialled with a thicker insert (13, 16mm) which was stable in extension but too tight in flexion.Hence, surgeon opted for change to competitor hinge to ensure extension-flexion stability and also to make sure that patient does not go into recurvatum (stryker triathlon does not have a hinge).Old triathlon implant (done on (b)(6) 2017) was returned to patient.

• Brand Name: TRIATHLON PRIM TIB BASEPLATE - CEMENTED
• Common Device Name: PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, CO
• Manufacturer (Section D): STRYKER ORTHOPAEDICS-MAHWAH; 325 corporate drive; mahwah NJ 07430
• MDR Report Key: 9335157
• Report Number: 0002249697-2019-03797
• Device Sequence Number: 11230859
• Product Code: MBH
• UDI-Device Identifier: 07613327050318
• UDI-Public: 07613327050318
• Combination Product (Y/N): N
• Initial Reporter Country: SG
• PMA/510(K) Number: K141056
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2017
• Device Explanted Year: 2019
• Reporter Type: Manufacturer
• Report Source: health professional,other
• Initial Reporter Occupation: Physician
• Type of Report: Initial
• Report Date (Section B): 11/18/2019

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?: No
• Operator of Device: Health Professional
• Device Expiration Date: 03/31/2022
• Device Catalogue Number: 5520-B-300
• Device Lot Number: B9E2Y
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 10/21/2019
• Initial Report FDA Received Date: 11/18/2019
• 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: Hospitalization; Required Intervention
• Patient Age: 72 YR
• Patient Weight: 61