Reported Reactions

Devices › Plate, cranioplasty, preformed, alterable

Device brand name · Plate cranioplasty preformed alterable

Matneu Scr 1 5 Self-Drill L4 Tan 1u I/C: medical device reports filed with FDA

226 reports name it, 2013–2026. Manufacturer given most often on reports: Synthes. Product code GWO.

226
device reports naming the brand
0% of all MAUDE reports · about 17 a year
62
reports, 12 months to August 2026
101 in the 12 months before
97.3%
classified as malfunction
78.8% across the product code
0%
classified as death, as reported
0 reports · not verified by FDA

FDA's MAUDE database holds 226 reports that name the brand "Matneu Scr 1 5 Self-Drill L4 Tan 1u I/C" (plate cranioplasty preformed alterable), received between January 2013 and August 2026; the manufacturer given most often on reports is Synthes. Spellings of one product vary from report to report.

62 reports arrived in the 12 months to August 2026, down 39% from 101 in the 12 months before. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases. The event types recorded are malfunction (97.3%) and injury (2.7%); across all plate, cranioplasty, preformed, alterable reports (product code GWO) death is recorded in 0% and malfunction in 78.8%. Event type is the reporter's classification of the report, not a verified outcome.

The device problems coded most often are break (69.5%), device-device incompatibility (6.6%) and difficult to insert (4%). The patient problems coded most often are foreign body in patient, device embedded in tissue or plaque and foreign body reaction. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."

Reports by month, five years

01122Sep 2021: 0Oct 2021: 0Nov 2021: 1Dec 2021: 02022Jan 2022: 0Feb 2022: 0Mar 2022: 0Apr 2022: 1May 2022: 0Jun 2022: 0Jul 2022: 0Aug 2022: 1Sep 2022: 1Oct 2022: 0Nov 2022: 0Dec 2022: 02023Jan 2023: 0Feb 2023: 2Mar 2023: 0Apr 2023: 1May 2023: 0Jun 2023: 0Jul 2023: 1Aug 2023: 4Sep 2023: 2Oct 2023: 0Nov 2023: 0Dec 2023: 22024Jan 2024: 3Feb 2024: 7Mar 2024: 2Apr 2024: 0May 2024: 0Jun 2024: 1Jul 2024: 4Aug 2024: 0Sep 2024: 1Oct 2024: 3Nov 2024: 6Dec 2024: 72025Jan 2025: 17Feb 2025: 7Mar 2025: 17Apr 2025: 19May 2025: 4Jun 2025: 13Jul 2025: 3Aug 2025: 4Sep 2025: 1Oct 2025: 10Nov 2025: 3Dec 2025: 112026Jan 2026: 22Feb 2026: 2Mar 2026: 0Apr 2026: 1May 2026: 8Jun 2026: 1Jul 2026: 0Aug 2026: 3

Reports by the month FDA received them. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases.

By year received

0551092013: 2320132014: 420142021: 420212022: 320222023: 1220232024: 3420242025: 10920252026: 372026

Event type and report source

Event type, as classified on the report

Death0%0
Injury2.7%6
Malfunction97.3%220
Other0%0
Not given0%0

Who filed the report

Manufacturer report100%226
Voluntary report0%0
User facility report0%0
Distributor report0%0
Not given0%0

Grey bar: all 953 reports carrying product code GWO. Event type is the filer's classification and is not verified by FDA.

Device problems coded

Device problem (FDA code)ReportsShareShare across product code
Breakthe device broke15769.5%50.4%
Device-device incompatibility156.6%3.6%
Difficult to insertthe device was hard to insert94%0.1%
Entrapment of device73.1%2.4%
Material deformation62.7%0.6%
Crackthe device cracked52.2%1.3%
Nonstandard device52.2%2.1%
Difficult to advance41.8%1%
Device contaminated during manufacture or shipping31.3%1.3%
Device operates differently than expectedthe device behaved unexpectedly31.3%0.5%
Dull, blunt31.3%0.1%
Detachment of device component20.9%0%
Device slipped20.9%0.5%
Failure to cut20.9%4.1%
Collapse10.4%0%
Detachment of device or device componentpart of the device came off10.4%0.1%
Device damaged prior to usethe device was damaged before use10.4%0.3%
Difficult to removethe device was hard to remove10.4%0%
Fitting problem10.4%0.8%
Manufacturing, packaging or shipping problem10.4%0.4%

FDA's device problem codes as entered on the report; one report can carry several. Generic codes such as "no apparent adverse event" are left out.

Patient problems coded

Patient problem (FDA code)ReportsShare
Foreign body in patientpart of a device left in the patient41.8%
Device embedded in tissue or plaque10.4%
Foreign body reaction10.4%
Hypersensitivity/allergic reaction10.4%

Patient problem codes are present mainly in reports filed since 2019 and are often blank.

In context

MeasureMatneu Scr 1 5 Self-Drill L4 Tan 1u I/CProduct code GWOAll MAUDE reports
Reports22695326,136,888
Share of that pool—23.7%0%
Classified as death, per 1,000 reports009
Classified as injury2.7%20.7%36.2%
Classified as malfunction97.3%78.8%62.3%
Filed by the manufacturer100%99%94.9%

Shares are of reports, not of devices in use. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."

Other brands with product code GWO

BrandReportsLatest 12 monthsClassified as death
Ti Matrixneuro Screw Self-Drilling 4mm758740%
Ti Matrixneuro Screw Self-Drilling 5mm184500%
Unknown_Fro_Product19270%
Matneu Scr 1 5 Self-Drill L4 Tan 4u I/C180410%
Vertex Reconstruction System75990.3%

Ordered by report count for navigation only. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA also states that "common products may have a higher number of adverse events due to the higher total number of people using the product."

Questions about Matneu Scr 1 5 Self-Drill L4 Tan 1u I/C reports

How many FDA reports name Matneu Scr 1 5 Self-Drill L4 Tan 1u I/C?

226 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 62 in the latest 12 months.

What kinds of events are reported?

malfunction (97.3%) and injury (2.7%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

break (69.5%), device-device incompatibility (6.6%), difficult to insert (4%), entrapment of device (3.1%) and material deformation (2.7%). These are FDA's device problem codes as entered on the report.

Who files these reports?

manufacturer reports (100%). Manufacturers and user facilities are required to report; voluntary reports come from health professionals and the public.

Do these reports show that Matneu Scr 1 5 Self-Drill L4 Tan 1u I/C was at fault?

No. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA adds that "a causal relationship cannot be established between product and reactions listed in a report."

How do I report a problem with a medical device?

Through FDA MedWatch (Form FDA 3500 for health professionals and consumers), or to the manufacturer. See the guide on how to report.

Where this comes from. Counts are built from the openFDA Device Adverse Event (MAUDE) bulk export released 28 Sep 2026, which holds reports FDA received through 31 Aug 2026. Brand, generic and manufacturer names are as written on the reports; product code names come from FDA's device classification. A report counts here when any device it lists carries this brand name after punctuation and capitalisation are normalised. No report narrative, lot number, patient detail or reporter identity is published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.

Drug data (FAERS) through 30 Jun 2026; device data (MAUDE) through 31 Aug 2026. Not medical advice.