MAUDE Adverse Event Report: STRYKER GMBH LOCKING SCREW PANGEA PLATFORM 5.0MM / T20 / L75MM; SCREW, FIXATION, BONE

Catalog Number	662375
Medical Device Problem Codes	Loosening of Implant Not Related to Bone-Ingrowth (4002); Migration (4003)
Health Effect - Clinical Codes	Pain (1994); Insufficient Information (4580)
Date of Event	06/22/2025
Type of Reportable Event	Serious Injury
Event or Problem Description
Pangea 5.0mm locking screws backed out from the plate and became prominent requiring hardware removal surgery.
Additional Manufacturer Narrative
Once the investigation has been completed any additional information will be reported in a supplemental report.
Additional Manufacturer Narrative
Corrections: g4 (pma/510k), g1 (reporting contact).The reported event was rated as confirmed due to the observed damages at the received plate.In total three (3) locking screws were returned together with the distal medial femur plate.There was no information provided how many screws were affected by the reported screw back out.The evaluation of the corresponding plate has shown that two (2) of the universal holes were damaged in a manner that a proper locking of the screw was not possible anymore.All of the returned locking screws have very similar damages; there are no screws that are more damaged than the other screws.Therefore, it is not possible which of the returned locking screws were affected by the reported occurrence.The device inspection revealed the following: the inspection of the screws has shown that the locking threads are slightly damaged, especial the first thread flanks are partially flattened.This could be an indication for an excessive contact between the screw and the plate during the insertion, for example by an out of the 30° cone insertion.However, it can also not be excluded that the damages occurred in-situ due to friction between the screw and the plate.A review of the device history for the reported lot did not indicate any abnormalities.No corrective actions are required at this time.A review of the labeling did not indicate any abnormalities.No indications of material, manufacturing or design related problems were found during the investigation.The complaint was reviewed by rnd, including a interview with the operating physician, with following result: "1.Although the plate contains 13 possible screw holes, microscopic examination indicates that only 5 screws were actually used.2.The two holes (1 and 3) in which cortical screws appear to have been placed show normal contact marks consistent with proper screw engagement.3.Three holes (10, 12, and 13) show traces characteristic of locking screws.4.Hole 12 presents normal locking-screw imprints along its edges, whereas holes 10 and 13 show significant edge damage.5.A mechanical failure involving the entire distal portion¿where the three locking screws were used¿would typically produce similar edge wear in all three holes (assuming a non-comminuted fracture).The severe edge wear observed in hole 13 contrasts markedly with the more regular imprint pattern seen in adjacent hole 12.Multiple explanations are possible.Without patient x-rays, fracture pattern information, or knowledge of how many plates were used for this indication, we cannot determine: - whether the low number of screws used was appropriate; -whether screws were targeting individual fragments; - whether the heavy wear in hole 13 is related to: 1.An initial mechanical failure causing a loosened screw to bear weight 2.Accidental hardware contact (e.G., from a drill), or 3.An attempt to lock the screw beyond 15°, causing the screw to spin and ream the hole edges.The substantial edge wear observed in holes 10 and 13 indicates locking-mechanism failure.However, based on the available samples, no single cause for this failure can be definitively identified." no product related issue could be detected at the returned locking screws during the investigation.Based on the provided information, no pre-, intra- and post-operative x-rays in different planes, operation reports, detailed patient details, history and activity was provided, the root cause of the reported event cannot be defined.There are too many factors, like screw insertion angle and torque, position of other already present implants, fracture situation, patient condition, especially in relation to bone quality and activity, that could have played a role.If more information is provided, the case will be reassessed.
Event or Problem Description
Pangea 5.0mm locking screws backed out from the plate and became prominent requiring hardware removal surgery.

• Brand Name: LOCKING SCREW PANGEA PLATFORM 5.0MM / T20 / L75MM
• Common Device Name: SCREW, FIXATION, BONE
• Manufacturer (Section D): STRYKER GMBH; bohnackerweg 1; postfach; selzach 2545 ; SZ 2545
• Manufacturer (Section G): STRYKER GMBH; bohnackerweg 1; postfach; selzach 2545 ; SZ 2545
• Manufacturer Contact: dannielle stap ; 325 corporate drive; mahwah, NJ 07430 ; 2018315000
• MDR Report Key: 22742353
• Report Number: 0008031020-2025-01333
• Device Sequence Number: 7534122
• Product Code: HWC
• UDI-Device Identifier: 07613327414141
• UDI-Public: (01)07613327414141(10)AD3715
• Combination Product (Y/N): N
• Initial Reporter State: TX
• Initial Reporter Country: US
• PMA/510(K) Number: K242445
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2025
• Device Explanted Year: 2025
• Reporter Type: Manufacturer
• Report Source: Health Professional
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 12/18/2025

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: Lay User/Patient
• Device Catalogue Number: 662375
• Device Lot Number: AD3715
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 07/22/2025
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Follow-Up
• Initial Date Received by Manufacturer: 07/10/2025
• Supplement Date Received by Manufacturer: 11/27/2025
• Initial Report FDA Received Date: 08/07/2025
• Supplement Report FDA Received Date: 12/18/2025
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 09/27/2023
• 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
• Outcome Attributed to Adverse Event: Other
• Patient Sex: Female