Reported Reactions

Devices › Screw, fixation, bone

Device brand name · Screw fixation bone

Unk - Screws Cortex: medical device reports filed with FDA

889 reports name it, 2019–2026. Manufacturer given most often on reports: Wrights Lane Synthes USA Products. Product code HWC.

889
device reports naming the brand
0% of all MAUDE reports · about 126 a year
16
reports, 12 months to August 2026
65 in the 12 months before
3.4%
classified as malfunction
30.8% across the product code
0%
classified as death, as reported
0 reports · not verified by FDA

FDA's MAUDE database holds 889 reports that name the brand "Unk - Screws Cortex" (screw fixation bone), received between June 2019 and February 2026; the manufacturer given most often on reports is Wrights Lane Synthes USA Products. Spellings of one product vary from report to report.

16 reports arrived in the 12 months to August 2026, down 75% from 65 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 injury (96.6%) and malfunction (3.4%); across all screw, fixation, bone reports (product code HWC) death is recorded in 0.1% and malfunction in 30.8%. Event type is the reporter's classification of the report, not a verified outcome.

The device problems coded most often are break (12.6%), migration (2.8%) and device slipped (1.3%). The patient problems coded most often are nonunion/delayed-union bone fracture, pain and bone fracture(s). 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

071141Sep 2021: 141Oct 2021: 11Nov 2021: 32Dec 2021: 12022Jan 2022: 8Feb 2022: 1Mar 2022: 0Apr 2022: 3May 2022: 8Jun 2022: 19Jul 2022: 6Aug 2022: 12Sep 2022: 0Oct 2022: 29Nov 2022: 2Dec 2022: 52023Jan 2023: 17Feb 2023: 0Mar 2023: 0Apr 2023: 0May 2023: 1Jun 2023: 4Jul 2023: 3Aug 2023: 8Sep 2023: 2Oct 2023: 7Nov 2023: 12Dec 2023: 02024Jan 2024: 1Feb 2024: 3Mar 2024: 4Apr 2024: 6May 2024: 6Jun 2024: 0Jul 2024: 19Aug 2024: 3Sep 2024: 33Oct 2024: 6Nov 2024: 0Dec 2024: 02025Jan 2025: 0Feb 2025: 0Mar 2025: 5Apr 2025: 2May 2025: 17Jun 2025: 2Jul 2025: 0Aug 2025: 0Sep 2025: 4Oct 2025: 8Nov 2025: 0Dec 2025: 12026Jan 2026: 1Feb 2026: 2Mar 2026: 0Apr 2026: 0May 2026: 0Jun 2026: 0Jul 2026: 0Aug 2026: 0

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

01513022019: 10020192020: 21720202021: 30220212022: 9320222023: 5420232024: 8120242025: 3920252026: 32026

Event type and report source

Event type, as classified on the report

Death0%0
Injury96.6%859
Malfunction3.4%30
Other0%0
Not given0%0

Who filed the report

Manufacturer report100%889
Voluntary report0%0
User facility report0%0
Distributor report0%0
Not given0%0

Grey bar: all 58,946 reports carrying product code HWC. 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 broke11212.6%26.4%
Migrationthe device moved from where it was placed252.8%4.4%
Device slipped121.3%1.9%
Device-device incompatibility121.3%4.1%
Entrapment of device101.1%1.2%
Material twisted/bent91%1.4%
Migration or expulsion of device70.8%2.1%
Material deformation40.4%1%
Improper or incorrect procedure or method30.3%0.4%
Unintended movement30.3%0.9%
Material fragmentation20.2%1.3%
Failure to cut10.1%0%
Manufacturing, packaging or shipping problem10.1%0.5%

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
Nonunion/delayed-union bone fracture23226.1%
Painpain, site not specified14816.6%
Bone fracture(s)697.8%
Skin inflammation/ irritation576.4%
Appropriate clinical signs, symptoms and conditions term/code not available394.4%
Loss of range of motion323.6%
Numbnessnumbness293.3%
Nerve damage273%
Failure of implant242.7%
Discomfortdiscomfort171.9%
Injurya physical injury171.9%
Post operative wound infection171.9%
Impaired healingslow healing161.8%
Hypersensitivity/allergic reaction121.3%
Muscular rigidity121.3%

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

In context

MeasureUnk - Screws CortexProduct code HWCAll MAUDE reports
Reports88958,94626,136,888
Share of that pool—1.5%0%
Classified as death, per 1,000 reports019
Classified as injury96.6%67.2%36.2%
Classified as malfunction3.4%30.8%62.3%
Filed by the manufacturer100%97.3%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 HWC

BrandReportsLatest 12 monthsClassified as death
UNK - Screws: Trauma3,5762880%
UNK - Screws: Locking2,331980%
Unknown Screw1,2221560%
Screw64700%
UNK - Screws: Nail Distal Locking444120.2%
Unknown Screws652231.7%
UNK - Screws: CMF4102800%
UNK - Screws: Locking: Trauma276340%
Unk - Screws 3 5 Mm Cortex220330%
Unk - Screws Nail Locking211190%
UNK - Screws: 2.7 mm VA Locking204220%
Unk - Screws Cannulated19090.5%
Unk - Screws25600%
Locking Screw24130%
Ni32,9391,5871.8%

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 Unk - Screws Cortex reports

How many FDA reports name Unk - Screws Cortex?

889 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 16 in the latest 12 months.

What kinds of events are reported?

injury (96.6%) and malfunction (3.4%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

break (12.6%), migration (2.8%), device slipped (1.3%), device-device incompatibility (1.3%) and entrapment of device (1.1%). 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 Unk - Screws Cortex 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.