MAUDE Adverse Event Report: STRYKER ORTHOPAEDICS-MAHWAH SIZE 4 ACCOLADE II 127 DEG; PROSTHESIS, HIP, SEMI-CONSTRAINED, METAL/POLYMER, POROUS UNCEMENTED

Model Number	6721-0435
Medical Device Problem Codes	Material Erosion (1214); Fracture (1260)
Health Effect - Clinical Codes	Foreign Body Reaction (1868); Metal Related Pathology (4530)
Date of Event	04/11/2022
Type of Reportable Event	Serious Injury
Event or Problem Description
I was in a deep squat, one i had done many times before, and my implant failed and slipped out of the socket.Update per conversation with patient 05/25/2022: patient had a bilateral stryker hip replacement on (b)(6) 2018 with trident product.In (b)(6) 2022, patient was in a "deep squat" and the left hip "fell out to the back".Patient noted that prior to revision, surgeon indicated potential "stem hitting cup and liner breakage" (patient is unsure if liner was metal or poly).Patient alleges high levels of chromium and cobalt.Patient's left hip was revised on (b)(6) 2022.Patient has not returned to surgeon yet for follow up and is unsure at this time what parts were revised.Patient will supply medical records.Update 13/june/2022: as reported in medwatch mw5109954: i was in a deep squat and my hip replacement failed and slipped out.I had a bilateral hip replacement with stryker trident psl on 2018.My right hip failed about 3-5 months later cause unknown, right revision on 2019.Left hip failure from a deep squat with the left hip revision surgery on 2022.
Additional Manufacturer Narrative
It was noted that the device is not available for evaluation.Should additional information become available, it will be provided in a supplemental report upon completion of the investigation.
Event or Problem Description
I was in a deep squat, one i had done many times before, and my implant failed and slipped out of the socket.(b)(6) 2022 update per conversation with patient (b)(6) 2022: patient had a bilateral stryker hip replacement on (b)(6) 2018 with trident product.In (b)(6) 2022 patient was in a "deep squat" and the left hip "fell out to the back".Patient noted that prior to revision, surgeon indicated potential "stem hitting cup and liner breakage" (patient is unsure if liner was metal or poly).Patient alleges high levels of chromium and cobalt.Patient's left hip was revised on (b)(6) 2022.Patient has not returned to surgeon yet for follow up and is unsure at this time what parts were revised.Patient will supply medical records.Update 13/june/2022: as reported in medwatch mw5109954: i was in a deep squat and my hip replacement failed and slipped out.I had a bilateral hip replacement with stryker trident psl on 2018.My right hip failed about 3-5 months later cause unknown, right revision on 2019.Left hip failure from a deep squat with the left hip revision surgery on 2022.
Additional Manufacturer Narrative
Reported event: an event regarding abnormal ion level involving an accolade stem was reported.The events were confirmed.Method & results: -product evaluation and results: visual inspection, dimensional, functional and material analysis could not be performed as the device remains implanted.-clinician review: a review of medical records with a clinical consultant indicated "this inquiry concerns patient who underwent bilateral total hip arthroplasties and then subsequently developed disassociation/dislocation of both of his components.There was also elevation of his chrome and cobalt levels.In my opinion a contributing factor is impingement, especially on the right where a notch is seen on the femoral neck.This can account for not only the mechanical failure but also the elevated ion levels.I can confirm that these events occurred because i was able to review the x-rays and operation reports.Regarding the root cause of failure, i cannot determine this for certain.Causes are multifactorial.Dislocation/disassociation can be caused by surgical technique factors, patient activity and lifestyle factors and less likely implant factors.Elevated ion levels in this case are most likely caused by impingement demonstrated clearly on the right with a notch in the femoral neck." -product history review: a product history review could not be performed as no lot information was provided.-complaint history review: a complaint history review could not be performed as no lot information was provided.Conclusions: it was reported that the patient was revised due to disassociation of the head from the poly liner and abnormal ion levels.A review of medical records with a clinical consultant indicated "this inquiry concerns patient who underwent bilateral total hip arthroplasties and then subsequently developed disassociation/dislocation of both of his components.There was also elevation of his chrome and cobalt levels.In my opinion a contributing factor is impingement, especially on the right where a notch is seen on the femoral neck.This can account for not only the mechanical failure but also the elevated ion levels.I can confirm that these events occurred because i was able to review the x-rays and operation reports.Regarding the root cause of failure, i cannot determine this for certain.Causes are multifactorial.Dislocation/disassociation can be caused by surgical technique factors, patient activity and lifestyle factors and less likely implant factors.Elevated ion levels in this case are most likely caused by impingement demonstrated clearly on the right with a notch in the femoral neck." 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 or Problem Description
I was in a deep squat, one i had done many times before, and my implant failed and slipped out of the socket.Update per conversation with patient 05/25/2022: patient had a bilateral stryker hip replacement on (b)(6) 2018 with trident product.In (b)(6) 2022, patient was in a "deep squat" and the left hip "fell out to the back".Patient noted that prior to revision, surgeon indicated potential "stem hitting cup and liner breakage" (patient is unsure if liner was metal or poly).Patient alleges high levels of chromium and cobalt.Patient's left hip was revised on (b)(6) 2022.Patient has not returned to surgeon yet for follow up and is unsure at this time what parts were revised.Patient will supply medical records.Update 13/june/2022: as reported in medwatch mw5109954: i was in a deep squat and my hip replacement failed and slipped out.I had a bilateral hip replacement with stryker trident psl on 2018.My right hip failed about 3-5 months later cause unknown, right revision on 2019.Left hip failure from a deep squat with the left hip revision surgery on 2022.
Additional Manufacturer Narrative
Reported event: an event regarding abnormal ion level involving an accolade stem was reported.The events were confirmed.Method & results: -product evaluation and results: visual inspection, dimensional, functional and material analysis could not be performed as the device remains implanted.-clinician review: a review of medical records with a clinical consultant indicated "this inquiry concerns patient who underwent bilateral total hip arthroplasties and then subsequently developed disassociation/dislocation of both of his components.There was also elevation of his chrome and cobalt levels.In my opinion a contributing factor is impingement, especially on the right where a notch is seen on the femoral neck.This can account for not only the mechanical failure but also the elevated ion levels.I can confirm that these events occurred because i was able to review the x-rays and operation reports.Regarding the root cause of failure, i cannot determine this for certain.Causes are multifactorial.Dislocation/disassociation can be caused by surgical technique factors, patient activity and lifestyle factors and less likely implant factors.Elevated ion levels in this case are most likely caused by impingement demonstrated clearly on the right with a notch in the femoral neck.Trunnionosis can also cause elevated ions".-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 disassociation of the head from the poly liner and abnormal ion levels.A review of medical records with a clinical consultant indicated "this inquiry concerns patient who underwent bilateral total hip arthroplasties and then subsequently developed disassociation/dislocation of both of his components.There was also elevation of his chrome and cobalt levels.In my opinion a contributing factor is impingement, especially on the right where a notch is seen on the femoral neck.This can account for not only the mechanical failure but also the elevated ion levels.I can confirm that these events occurred because i was able to review the x-rays and operation reports.Regarding the root cause of failure, i cannot determine this for certain.Causes are multifactorial.Dislocation/disassociation can be caused by surgical technique factors, patient activity and lifestyle factors and less likely implant factors.Elevated ion levels in this case are most likely caused by impingement demonstrated clearly on the right with a notch in the femoral neck." 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 or Problem Description
I was in a deep squat, one i had done many times before, and my implant failed and slipped out of the socket.Update per conversation with patient (b)(6) 2022: patient had a bilateral stryker hip replacement on (b)(6) 2018 with trident product.In (b)(6) 2022, patient was in a "deep squat" and the left hip "fell out to the back".Patient noted that prior to revision, surgeon indicated potential "stem hitting cup and liner breakage" (patient is unsure if liner was metal or poly).Patient alleges high levels of chromium and cobalt.Patient's left hip was revised on (b)(6) 2022.Patient has not returned to surgeon yet for follow up and is unsure at this time what parts were revised.Patient will supply medical records.Update 13/june/2022: as reported in medwatch mw5109954: i was in a deep squat and my hip replacement failed and slipped out.I had a bilateral hip replacement with stryker trident psl on 2018.My right hip failed about 3-5 months later cause unknown, right revision on 2019.Left hip failure from a deep squat with the left hip revision surgery in 2022.
Additional Manufacturer Narrative
Reported event: an event regarding abnormal ion level involving an accolade stem was reported.The events were confirmed.Method & results: product evaluation and results: visual inspection, dimensional, functional and material analysis could not be performed as the device remains implanted.Clinician review: a review of medical records with a clinical consultant indicated "this inquiry concerns patient who underwent bilateral total hip arthroplasties and then subsequently developed disassociation/dislocation of both of his components.There was also elevation of his chrome and cobalt levels.In my opinion a contributing factor is impingement, especially on the right where a notch is seen on the femoral neck.This can account for not only the mechanical failure but also the elevated ion levels.I can confirm that these events occurred because i was able to review the x-rays and operation reports.Regarding the root cause of failure, i cannot determine this for certain.Causes are multifactorial.Dislocation/disassociation can be caused by surgical technique factors, patient activity and lifestyle factors and less likely implant factors.Elevated ion levels in this case are most likely caused by impingement demonstrated clearly on the right with a notch in the femoral neck.Trunnionosis can also cause elevated ions" 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 disassociation of the head from the poly liner and abnormal ion levels.A review of medical records with a clinical consultant indicated "this inquiry concerns patient who underwent bilateral total hip arthroplasties and then subsequently developed disassociation/dislocation of both of his components.There was also elevation of his chrome and cobalt levels.In my opinion a contributing factor is impingement, especially on the right where a notch is seen on the femoral neck.This can account for not only the mechanical failure but also the elevated ion levels.I can confirm that these events occurred because i was able to review the x-rays and operation reports.Regarding the root cause of failure, i cannot determine this for certain.Causes are multifactorial.Dislocation/disassociation can be caused by surgical technique factors, patient activity and lifestyle factors and less likely implant factors.Elevated ion levels in this case are most likely caused by impingement demonstrated clearly on the right with a notch in the femoral neck."the patient inquired on any recalls associated with these devices and a search indicated there are no recalls associated with these parts/lots.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.

• Brand Name: SIZE 4 ACCOLADE II 127 DEG
• Common Device Name: PROSTHESIS, HIP, SEMI-CONSTRAINED, METAL/POLYMER, POROUS UNCEMENTED
• 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: anna ryan ; raheen business park; centennial park, elstree; limerick, NJ WD6 3-SJ ; EI WD6 3SJ ; 2018315000
• MDR Report Key: 14710818
• Report Number: 0002249697-2022-00849
• Device Sequence Number: 2135928
• Product Code: LPH
• UDI-Device Identifier: 04546540669490
• UDI-Public: 04546540669490
• Combination Product (Y/N): N
• Initial Reporter State: CA
• Initial Reporter Country: US
• PMA/510(K) Number: K143085
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2018
• Device Explanted Year: 2022
• Reporter Type: Manufacturer
• Report Source: Consumer
• Initial Reporter Occupation: Other
• Type of Report: Initial,Followup,Followup,Followup
• Report Date (Section B): 12/02/2023

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
• Operator of Device: Health Professional
• Device Expiration Date: 11/30/2022
• Device Model Number: 6721-0435
• Device Catalogue Number: 6721-0435
• Device Lot Number: 62105602
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: No
• Type of Report(Section G): Initial
• Initial Date Received by Manufacturer: 05/24/2022
• Supplement Date Received by Manufacturer: 08/22/2022; 02/21/2023; 11/15/2023
• Initial Report FDA Received Date: 06/16/2022
• Supplement Report FDA Received Date: 09/15/2022; 03/14/2023; 12/02/2023
• Was Device Evaluated by Manufacturer? (Y/N): Device Not Returned to Manufacturer
• Date Device Manufactured: 11/30/2017
• Is the Device Labeled for Single Use? (Y/N): No
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Hospitalization; Required Intervention
• Patient Age: 53 YR
• Patient Sex: Male
• Patient Weight: 78 KG