MAUDE Adverse Event Report: STRYKER ORTHOPAEDICS-MAHWAH MODULAR DUAL MOBILITY INSERT; PROSTHESIS, HIP, SEMI-CONSTRAINED, METAL/CERAMIC/POLYMER, CEMENTED OR NON-POROUS

Model Number 626-00-42E

Device Problem Degraded (1153)

Patient Problem Insufficient Information (4580)

Event Date 04/20/2023

Event Type  Injury  

Manufacturer Narrative

Reported event: an event regarding wear involving an mdm liner was reported.The event was not confirmed.Method & results: product evaluation and results: the reported device was not returned however photographs were provided for review.The photographs show a recently explanted metal mdm liner that is covered in blood.No observations regarding wear can be made from the photographs.Clinician review: a review of the provided medical information by a clinical consultant indicated: "according to the product summaries for both inquiries, this patient underwent a primary left total hip arthroplasty at some point in the past.In 2020 a revision was carried out and in 2023 yet another revision was carried out.Findings at that time included a healing femoral shaft fracture with loose cables and bone fragments including greater trochanter.A dislocation was also reported.I cannot confirm these procedures with certainty since i only have a report of findings and a timeline in the product inquiry summaries.I do not have any office notes, operation notes or original x-rays, or prerevision x-rays.The one x-ray i have is unmarked so it is unclear at which stage this was taken.I cannot determine the root cause of this event with certainty.What i can say is that the causes of revision for femoral shaft fractures, loose or fractured cables and trochanteric and other fragments are multi-factorial including original surgical technique and patient factors including activity level and bmi." 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 the patient was revised due to impingement of the stem on the mdm liner.The reported device was not returned however photographs were provided for review.The photographs show a recently explanted metal mdm liner that is covered in blood.No observations regarding wear can be made from the photographs.A review of the provided x-ray image by a clinical consultant was unable to confirm the reported event.Further information such as return of the device, pathology reports, additional pre- and post-operative x-rays and the revision operative report as well as patient history and follow-up notes 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.H3 other text : device not returned to the manufacturer.

Event Description

It was reported the patient's left hip was revised.As reported: "patient had a 52mm trident ii cup and 42e mdm liner.Femoral neck of competitor stem notched after impinging on rim of mdm liner.Surgeon revised mdm liner to a 0 degree constrained liner." update 08-may-2023 mf: per medical review, "this x-ray shows a trochanteric cable plate with multiple circlage wires, some of which have broken and are frayed with some metallic debris." the reviewing clinician further stated that "at least five cables are present with at least one of the cables and possibly two that have broken." it was not reported how these fractured cables were addressed during the revision procedure.

Manufacturer Narrative

Reported event: an event regarding wear involving an mdm liner was reported.The event was not confirmed.Method & results: -product evaluation and results: the reported device was not returned however photographs were provided for review.The photographs show a recently explanted metal mdm liner that is covered in blood.No observations regarding wear can be made from the photographs.-clinician review: a review of the provided medical information by a clinical consultant indicated: "according to the product summaries for both inquiries, this patient underwent a primary left total hip arthroplasty at some point in the past.In (b)(6) 2020 a revision was carried out and in (b)(6) 2023 yet another revision was carried out.Findings at that time included a healing femoral shaft fracture with loose cables and bone fragments including greater trochanter.A dislocation was also reported.The one x-ray i have is unmarked so it is unclear at which stage this was taken.I cannot determine the root cause of this event with certainty.What i can say is that the causes of revision for femoral shaft fractures, loose or fractured cables and trochanteric and other fragments are multi-factorial including original surgical technique and patient factors including activity level and bmi." -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 the patient was revised due to impingement of the stem on the mdm liner.The reported device was not returned however photographs were provided for review.The photographs show a recently explanted metal mdm liner that is covered in blood.No observations regarding wear can be made from the photographs.A review of the provided x-ray image by a clinical consultant was unable to confirm the reported event.Further information such as return of the device, pathology reports, additional pre- and post-operative x-rays and the revision operative report as well as patient history and follow-up notes 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.

Event Description

It was reported the patient's left hip was revised.As reported: "patient had a 52mm trident ii cup and 42e mdm liner.Femoral neck of competitor stem notched after impinging on rim of mdm liner.Surgeon revised mdm liner to a 0 degree constrained liner." update 08-may-2023 mf: per medical review, "this x-ray shows a trochanteric cable plate with multiple circlage wires, some of which have broken and are frayed with some metallic debris." the reviewing clinician further stated that "at least five cables are present with at least one of the cables and possibly two that have broken." it was not reported how these fractured cables were addressed during the revision procedure.

• Brand Name: MODULAR DUAL MOBILITY INSERT
• Type of Device: PROSTHESIS, HIP, SEMI-CONSTRAINED, METAL/CERAMIC/POLYMER, CEMENTED OR NON-POROUS
• Manufacturer (Section D): STRYKER ORTHOPAEDICS-MAHWAH; 325 corporate drive; mahwah NJ 07430
• Manufacturer (Section G): STRYKER ORTHOPAEDICS-CORK; ida industrial estate; carrigtwohill NA ; EI NA
• Manufacturer Contact: arokiya raj ; 325 corporate drive; mahwah, NJ 07430 ; 2018315000
• MDR Report Key: 16930190
• MDR Text Key: 315198440
• Report Number: 0002249697-2023-00522
• Device Sequence Number: 1
• Product Code: LZO
• UDI-Device Identifier: 04546540666017
• UDI-Public: 04546540666017
• Combination Product (y/n): N
• Reporter Country Code: US
• PMA/PMN Number: K103233
• 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: 05/30/2023

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
• Device Operator: Health Professional
• Device Model Number: 626-00-42E
• Device Catalogue Number: 626-00-42E
• Device Lot Number: 75653304
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Initial Date Manufacturer Received: 04/20/2023
• Initial Date FDA Received: 05/15/2023
• Supplement Dates Manufacturer Received: 05/10/2023
• Supplement Dates FDA Received: 05/30/2023
• Was Device Evaluated by Manufacturer?: Device Not Returned to Manufacturer
• Date Device Manufactured: 10/31/2019
• 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
• Patient Sex: Female
• Patient Weight: 87 KG