MAUDE Adverse Event Report: STRYKER ORTHOPAEDICS-MAHWAH CONSTRAINED ACETABULAR INSERTS; PROSTHESIS, HIP, CONSTRAINED, CEMENTED OR UNCEMENTED, METAL/POLYMER

Catalog Number	2099-2254
Medical Device Problem Code	Device Dislodged or Dislocated (2923)
Health Effect - Clinical Codes	Injury (2348); Joint Dislocation (2374)
Date of Event	10/23/2018
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
Reported event: an event regarding dislocation involving a constrained liner was reported.The event was not confirmed.Method & results: product evaluation and results: not performed as no product was returned for evaluation.Clinician review: no medical records were received for review with a clinical consultant.Product history review: indicated all 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: the event itself could not be confirmed and exact cause of the event could not be determined because insufficient information was provided.Further information such as device return, pre and post operative x-rays, operative reports as well as patient history and follow up notes are required to complete the investigation for determining a root cause.No further investigation is required at this time.If additional information becomes available to indicate further evaluation is warranted, this record will be reopened.
Event or Problem Description
"event: patient's constrained liner dislocated.Constrained liner/ shell were removed and constrained liner implanted".Update 25/october/2018: rep reported the following: the bipolar dislocated out of the liner.Constrained liner was securely locked in shell.New head was implanted increasing length from +0 to +8.Surgeon chose to revise shell to new tritanium revision shell.Old shell came out easily.No possible causes for dislocation.

• Brand Name: CONSTRAINED ACETABULAR INSERTS
• Common Device Name: PROSTHESIS, HIP, CONSTRAINED, CEMENTED OR UNCEMENTED, METAL/POLYMER
• Manufacturer (Section D): STRYKER ORTHOPAEDICS-MAHWAH; 325 corporate drive; mahwah NJ 07430
• MDR Report Key: 8090185
• Report Number: 0002249697-2018-03769
• Device Sequence Number: 16503160
• Product Code: KWZ
• UDI-Device Identifier: 07613327031461
• UDI-Public: 07613327031461
• Combination Product (Y/N): N
• Initial Reporter State: MN
• Initial Reporter Country: US
• PMA/510(K) Number: P960047
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Explanted Year: 2018
• Reporter Type: Manufacturer
• Report Source: health professional,other
• Initial Reporter Occupation: Physician
• Type of Report: Initial
• Report Date (Section B): 11/20/2018

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: 03/31/2014
• Device Catalogue Number: 2099-2254
• Device Lot Number: MHDMTV
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 10/23/2018
• Initial Report FDA Received Date: 11/20/2018
• 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 Weight: 88