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

Model Number	N/A
Medical Device Problem Code	Migration (4003)
Health Effect - Clinical Codes	Failure of Implant (1924); Pain (1994)
Date of Event	10/27/2023
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
(b)(4).G2: foreign: japan.Customer has indicated that the product is in process of being returned to zimmer biomet for investigation.Once the investigation has been completed, a follow-up mdr will be submitted.Multiple mdr reports were filed for this event, please see associated reports: 0009613350 -2023 - 00686, 0009613350 -2023 - 00687.
Event or Problem Description
It was reported that the patient had a revision surgery due to proximal screws that were backed out from the proper position, approximately one (1) month after implantation.Due diligence is in progress for this complaint; to date no additional information or product has been received.
Event or Problem Description
No additional information at this time.
Additional Manufacturer Narrative
(b)(4).D4: product id was provided for three screws however, it is unknown which of the three screws has migrated.Therefore, the migrated screw could be any of the following 47248603840 ¿ blunt tip screw ¿ 3136318, udi: (b)(4), manufacturing date: oct 27, 2022, expiration date: oct 27, 2027.47248604040 ¿ blunt tip screw ¿ 3158948, udi: (b)(4) , manufacturing date: may 15, 2023, expiration date: may 15, 2028.47248604040 ¿ blunt tip screw - 3160705, udi: (b)(4), manufacturing date: may 25, 2023, expiration date: may 25, 2028.D10: 47248604040 ¿ blunt tip screw ¿ 3158948, 47249624008 ¿ ann nail ¿ 3152739, 47248604040 ¿ blunt tip screw - 3160705.No product was returned for evaluation.There are some pictures of some screws available.The visual inspection of the provided pictures show that the threaded parts of the screws are partially flattened.The heads of the blunt tip screws appear inconspicuous.A review of the device manufacturing records confirmed no abnormalities or deviations.Review of complaint histories identified additional similar complaints for the reported products and additional similar complaints for the reported part and lot combinations.Complaints are monitored through monthly complaint review in order to identify potential adverse trends.There are two x-ray images available.The review was done by a radiologist.Two views of the right humerus demonstrate a recently placed right humeral intra-medullary rod with three proximal screws.Of these three proximal screws, the middle and distal screws have backed out.Oblique fracture along the mid humeral diaphysis.No dislocation.Surgical skin staples.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 report will be filed accordingly.Zimmer biomet will continue to monitor for trends.

• Brand Name: BLUNT TIP SCREW, ÿ 4X38MM
• Common Device Name: HIP IMPLANT
• 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: 18307484
• Report Number: 0009613350-2023-00685
• Device Sequence Number: 6604509
• Product Code: HSB
• UDI-Device Identifier: 00889024505438
• UDI-Public: (01)00889024505438(17)271027(10)3136318
• 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: 2023
• Device Explanted Year: 2023
• 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): 05/10/2024

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: 3136318
• 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: 11/16/2023
• Supplement Date Received by Manufacturer: 05/08/2024
• Initial Report FDA Received Date: 12/11/2023
• Supplement Report FDA Received Date: 05/10/2024
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 10/27/2022
• 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
• If action reported to FDA under 21 USC 360i(g), list FDA-assigned Recall Number or include a statement: N/A
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Hospitalization; Required Intervention
• Patient Sex: Unknown