MAUDE Adverse Event Report: ZIMMER GMBH BLUNT TIP SCREW, ÿ 4X38MM; PROSTHESIS, HIP

Model Number	N/A
Medical Device Problem Code	Migration (4003)
Health Effect - Clinical Codes	Failure of Implant (1924); Pain (1994)
Date of Event	07/20/2024
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
(b)(4).D4.Product id was provided for four screws however, it is unknown which of the screws has migrated.Therefore, the migrated screw could be any of the following: 47248603840 ¿ blunt tip screw ¿ 3189226 (b)(4), manufacturing date: jan 11, 2024, expiration date: jan 11, 2029.47248604040 ¿ blunt tip screw ¿ 3178838, udi: (b)(4), manufacturing date: oct 24, 2023 , expiration date: oct 24, 2028.47248604640 ¿ blunt tip screw ¿ 3189214, udi: (b)(4), manufacturing date: dec 20, 2023 , expiration date: dec 20, 2028.47248605840 ¿ blunt tip screw ¿ 3176659, (b)(4), manufacturing date: oct 13, 2023 , expiration date: oct 13, 2028.D10.Proximal humerus, left, ã¿ 7x160mm item# 47249616107 lot# 3178812, blunt tip screw, ã¿ 4x40mm item# 47248604040 lot# 3178838, blunt tip screw, ã¿ 4x46mm item# 47248604640 lot# 3189214, blunt tip screw, ã¿ 4x58mm item# 47248605840 lot# 3176659, cortical bone screw, ã¿ 4x22mm item# 47248612240 lot# 3183245, cortical bone screw, ã¿ 4x24mm item# 47248612440 lot# 3193257, proximal humerus nail cap, ã¿ 10.5x2.5mm item# 47248801002 lot# 3191522.G2.Report source: japan.The device will not be returned for analysis; however, an investigation of the reported event is in progress.Once the investigation is completed, a supplemental medwatch 3500a will be submitted.
Event or Problem Description
It was reported that an ann nail surgery was performed and approximately 2 months later, the surgeon found that one of the proximal screws had migrated out of the proper position.The patient complained of pain and revision surgery was performed to remove the migrated screw.Diligence is completed and no further information on the reported event has been provided.
Additional Manufacturer Narrative
This follow-up report is being submitted to relay additional information.No product was returned, or pictures provided; visual and dimensional evaluations could not be performed.A review of the device manufacturing records confirmed no abnormalities or deviations.Review of the complaint histories identified additional similar complaints for the reported items and the part and lot combinations.Complaints are monitored per complaint trending process in order to identify potential adverse trends.It can be assumed that multiple contributing factors, related to either patient condition and behavior or implantation procedure, contributed to the migration of the screws.If and to what extent any of these aspects may have influenced the migration of the screw remains unknown.An additional deeper investigation was performed which identified the design limitation of the corelock mechanism of the affixus nail as a potential contributing factor.As part of the deeper investigation, a scientific literature search was conducted and a systematic review of the outcome of intramedullary nailing for acute proximal humerus fracture showed that screw migration and perforation into the joint is the second most common complication following secondary loss of reduction.In addition, scientific literature of competitor and predicate devices were assessed.This review has shown that the affixus® natural nail® proximal humeral system performs better and/or in equal range in comparison with legally marketed similar devices.In conclusion, as the cause may be multifactorial an exact root cause could not be identified for the migration of the screw.If any further information is found which would change or alter any conclusions or information, a supplemental will be filed accordingly.Zimmer biomet will continue to monitor for trends.
Event or Problem Description
Diligence is completed and no further information on the reported event has been provided.

• Brand Name: BLUNT TIP SCREW, ÿ 4X38MM
• Common Device Name: PROSTHESIS, HIP
• Manufacturer (Section D): ZIMMER GMBH; sulzer allee 8; sulzer industrie park; winterthur 8404 ; SZ 8404
• Manufacturer (Section G): ZIMMER GMBH; sulzer allee 8; sulzer industrie park; winterthur 8404 ; SZ 8404
• Manufacturer Contact: christina arnt ; 56 e. bell dr.; warsaw, IN 46582 ; 5745273773
• MDR Report Key: 20038826
• Report Number: 0009613350-2024-00395
• Device Sequence Number: 6405034
• Product Code: HSB
• UDI-Device Identifier: 00889024505438
• UDI-Public: (01)00889024505438(17)290111(10)3189226
• Combination Product (Y/N): N
• Initial Reporter Country: JA
• PMA/510(K) Number: K200814
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2024
• Device Explanted Year: 2024
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Foreign,Health Professional,Company Representative
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 09/05/2024

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?: Yes
• Operator of Device: Lay User/Patient
• Device Model Number: N/A
• Device Catalogue Number: 47248603840
• Device Lot Number: 3189226
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Was the Report Sent to FDA?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 08/02/2024
• Supplement Date Received by Manufacturer: 09/04/2024
• Initial Report FDA Received Date: 08/22/2024
• Supplement Report FDA Received Date: 09/05/2024
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 01/11/2024
• Is the Device Labeled for Single Use? (Y/N): Yes
• 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
• Concomitant Medical Products and Therapy/Usage Dates: SEE H11 NARRATIVE.
• Outcome Attributed to Adverse Event: Required Intervention; Hospitalization
• Patient Sex: Unknown