MAUDE Adverse Event Report: STRYKER ORTHOPAEDICS-MAHWAH TRIATHLON STEM EXTENDER 25MM; PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, CO

Catalog Number 5571-S-025

Device Problem Device Dislodged or Dislocated (2923)

Patient Problems Pain (1994); Injury (2348); Inadequate Osseointegration (2646)

Event Date 08/14/2019

Event Type  Injury  

Manufacturer Narrative

Reported event: an event regarding loosening of the stem from the stem extender component (disassociation) and tibial construct loosening involving a triathlon stem extender was reported.The event was not confirmed.Method & results product evaluation and results: material analysis, visual, functional and dimensional inspections could not be performed as the device was not returned.Medical records received and evaluation: a review of the provided medical records by a clinical consultant stated the following comment: need operative reports, office/clinical reports, serial x- rays, etc.Product history review: a review of the device manufacturing records indicate that all devices accepted into final stock were free from discrepancies.Complaint history review: there have been no other similar events for the lot referenced.Conclusions: the exact cause of the event could not be determined because insufficient information was provided.Further information such as return of the device, operative reports, office/clinical reports, serial x-rays are needed to complete the investigation for determining root cause.No further investigation for this event is possible at this time.If devices and / or additional information become available to indicate further evaluation is warranted, this record will be reopened.Device not returned.

Event Description

It was reported that the patient's right knee was revised due to pain and loss of function.Intra- operatively, the following was noted: the size 5 cemented femoral component was loose; there was a fracture at the junction of the femoral stem and 12x100 stem; the cemented tibial component was loose; the junction of the stem extender and 12x50 stem on the tibial side was loose.The patient's entire ts knee construct (including five augments) was revised to a triathlon ts knee construct with a cone.Rep provided one page of the primary operative report, and reported that no further information will be released by the hospital or surgeon.

• Brand Name: TRIATHLON STEM EXTENDER 25MM
• 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: joanne mahony ; ida industrial estate; carrigtwohill NA ; 214532800
• MDR Report Key: 8982223
• MDR Text Key: 161069874
• Report Number: 0002249697-2019-03162
• Device Sequence Number: 1
• Product Code: MBH
• UDI-Device Identifier: 07613327014976
• UDI-Public: 07613327014976
• Combination Product (y/n): N
• Reporter Country Code: US
• PMA/PMN Number: K141056
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: health professional,other
• Reporter Occupation: Physician
• Type of Report: Initial
• Report Date: 09/10/2019

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Date FDA Received: 09/10/2019
• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: No
• Device Operator: Health Professional
• Device Expiration Date: 09/30/2015
• Device Catalogue Number: 5571-S-025
• Device Lot Number: N4A59T
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Date Manufacturer Received: 08/14/2019
• Was Device Evaluated by Manufacturer?: Device Not Returned to Manufacturer
• Date Device Manufactured: 09/24/2010
• 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): Hospitalization; Required Intervention
• Patient Age: 72 YR