MAUDE Adverse Event Report: SMITH & NEPHEW, INC. 40MM OXINIUM MODULAR HEAD; PROSTHESIS, HIP, SEMI-CONSTRAINED, UNCEMENTED, METAL/POLYMER, POROUS

Catalog Number 71335558

Device Problem Insufficient Information (3190)

Patient Problem Limited Mobility Of The Implanted Joint (2671)

Event Date 08/30/2016

Event Type  Injury  

Event Description

It was reported that left hip revision surgery was performed due to continued instability.The r3 shell and the head were removed.

Manufacturer Narrative

The associated complaint devices were not returned.The clinical/medical team concluded, based on the available information, 1stt revision, the clinical symptoms of the reported elevated cobalt/chrome levels, alval, and hip pain may be consistent with an adverse reaction to metal debris but this cannot be confirmed based on the information provided.The second revision, the root cause of the "continued instability" and reported many dislocations cannot be concluded.However, the documented "significant muscle atrophy and capsule tissue loss", the weight loss of 120lbs in the five years combined with his concomitant co-morbid conditions may have contributed to this patients unstable hip.A review of the production documentation for the corresponding products did not reveal any deviation from the standard manufacturing processes.A review of complaint history for the listed part revealed no prior complaints for the listed batch.Without the actual product involved, our investigation cannot proceed.If the device or new information is received in the future, this complaint can be re-opened.

Manufacturer Narrative

The associated anthology porous plus high offset stem was not returned for evaluation.This complaint was re-opened due to instability.A review of the manufacturing records for the listed batch did not reveal any deviation from the standard manufacturing processes.The device was manufactured in 2007.A review of complaint history for the listed part revealed no prior complaints for the listed failure mode with the same batch number.Our clinical evaluation noted that based on the available information the root cause of the ¿continued instability¿ and reported many dislocations cannot be concluded.However, the documented ¿significant muscle atrophy and capsule tissue loss from the prior revision surgery¿, the recorded weight loss of 120lbs in the five years combined with his concomitant co-morbid conditions may have contributed to this patients unstable hip.No further investigation is warranted for this complaint; however we will continue to monitor for future complaints and investigate as necessary.

Manufacturer Narrative

The devices, intended for use in treatment, were not returned for evaluation and the reported event could not be confirmed.A clinical evaluation was conducted and confirms it cannot be determined to what extent the patient¿s fall, muscle atrophy and tissue loss had on his pain and clinical status.Although the surgeon¿s indication that the significant muscle atrophy and capsule tissue loss may have been contributing factors to the multiple dislocations, the root cause of the reported hip dislocations cannot be confirmed and it cannot be concluded that the dislocations were associated with a mal-performance of the implant.The patient impact beyond the pain, revision, and expected transient post-op convalescence period cannot be determined.No further clinical assessment is warranted at this time.A review of the complaint history for the listed parts revealed no prior complaints for the listed failure mode with the same batch numbers.A review of the device history records for the listed batch did not reveal any deviation from the standard manufacturing processes.At this time, we have no reason to suspect that the product failed to meet any product specifications at the time of manufacture.Some potential probable causes of this event could include traumatic injury or muscle atrophy.Based on this investigation, the need for corrective action is not indicated.Without the actual product involved and/or device information, our investigation cannot proceed.

• Brand Name: 40MM OXINIUM MODULAR HEAD
• Type of Device: PROSTHESIS, HIP, SEMI-CONSTRAINED, UNCEMENTED, METAL/POLYMER, POROUS
• Manufacturer (Section D): SMITH & NEPHEW, INC.; 1450 brooks road; memphis TN 38116
• MDR Report Key: 7630830
• MDR Text Key: 112074971
• Report Number: 1020279-2018-01174
• Device Sequence Number: 1
• Product Code: MBL
• Combination Product (y/n): N
• PMA/PMN Number: K093363
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: other
• Type of Report: Initial,Followup,Followup,Followup,Followup
• Report Date: 03/11/2020

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Date FDA Received: 06/22/2018
• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: No
• Device Operator: Health Professional
• Device Catalogue Number: 71335558
• Device Lot Number: 14KM06309
• Was Device Available for Evaluation?: No
• Date Manufacturer Received: 03/06/2020
• Is This a Reprocessed and Reused Single-Use Device?: No
• Patient Sequence Number: 1
• Patient Outcome(s): Other; Required Intervention
• Patient Age: 60 YR