Reported Reactions

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Device brand name · Knee instrument impactors

Sigma Hp Fem Notch Impactor: medical device reports filed with FDA

262 reports name it, 2014–2025. Manufacturer given most often on reports: Depuy International - 8010379. Product code HWA.

262
device reports naming the brand
0% of all MAUDE reports · about 21 a year
8
reports, 12 months to August 2026
4 in the 12 months before
98.9%
classified as malfunction
98% across the product code
0%
classified as death, as reported
0 reports · not verified by FDA

FDA's MAUDE database holds 262 reports that name the brand "Sigma Hp Fem Notch Impactor" (knee instrument impactors), received between January 2014 and December 2025; the manufacturer given most often on reports is Depuy International - 8010379. Spellings of one product vary from report to report.

8 reports arrived in the 12 months to August 2026, up 100% from 4 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 (98.9%) and injury (1.1%); across all impactor reports (product code HWA) death is recorded in 0% and malfunction in 98%. Event type is the reporter's classification of the report, not a verified outcome.

The device problems coded most often are break (79%), scratched material (3.8%) and material deformation (3.1%). The patient problems coded most often are not applicable. 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

036Sep 2021: 5Oct 2021: 1Nov 2021: 0Dec 2021: 12022Jan 2022: 0Feb 2022: 0Mar 2022: 1Apr 2022: 6May 2022: 3Jun 2022: 6Jul 2022: 0Aug 2022: 0Sep 2022: 2Oct 2022: 2Nov 2022: 1Dec 2022: 12023Jan 2023: 2Feb 2023: 0Mar 2023: 1Apr 2023: 1May 2023: 2Jun 2023: 1Jul 2023: 0Aug 2023: 4Sep 2023: 0Oct 2023: 2Nov 2023: 1Dec 2023: 12024Jan 2024: 1Feb 2024: 1Mar 2024: 1Apr 2024: 1May 2024: 1Jun 2024: 0Jul 2024: 2Aug 2024: 1Sep 2024: 1Oct 2024: 0Nov 2024: 2Dec 2024: 02025Jan 2025: 0Feb 2025: 1Mar 2025: 0Apr 2025: 0May 2025: 0Jun 2025: 0Jul 2025: 0Aug 2025: 0Sep 2025: 1Oct 2025: 6Nov 2025: 0Dec 2025: 12026Jan 2026: 0Feb 2026: 0Mar 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

021412014: 1420142015: 332016: 2120162017: 192018: 3320182019: 412020: 1920202021: 252022: 2220222023: 152024: 1120242025: 9

Event type and report source

Event type, as classified on the report

Death0%0
Injury1.1%3
Malfunction98.9%259
Other0%0
Not given0%0

Who filed the report

Manufacturer report100%262
Voluntary report0%0
User facility report0%0
Distributor report0%0
Not given0%0

Grey bar: all 19,425 reports carrying product code HWA. 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 broke20779%69.8%
Scratched material103.8%1.2%
Material deformation83.1%3.8%
Material integrity problema problem with the device material62.3%0.8%
Crackthe device cracked51.9%8%
Naturally worn41.5%5.2%
Loose or intermittent connection31.1%0.3%
Device reprocessing problem20.8%0%
Device-device incompatibility20.8%6%
Insufficient device problem information20.8%0.2%
Material twisted/bent20.8%1.7%
Contamination /decontamination problem10.4%1.4%
Detachment of device or device componentpart of the device came off10.4%0.6%
Disconnection10.4%0%
Dull, blunt10.4%0.1%
Illegible information10.4%0.2%
Particulates10.4%0%

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
Not applicable20.8%

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

In context

MeasureSigma Hp Fem Notch ImpactorProduct code HWAAll MAUDE reports
Reports26219,42526,136,888
Share of that pool—1.3%0%
Classified as death, per 1,000 reports009
Classified as injury1.1%1.8%36.2%
Classified as malfunction98.9%98%62.3%
Filed by the manufacturer100%99.5%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 HWA

BrandReportsLatest 12 monthsClassified as death
Pinn Straight Cup Impactor4,8073150%
Attune Femoral Impactor3,3281210%
Attune Fb Tibial Impactor1,9541140%
Attune Impaction Handle1,975640%
Attune Rp Tibial Impactor1,025320%
Sp2 Tibial Radel Impactor1,03920%
Duraloc Str Cup Impactor909570%
Concave Impactor Tip342180%
S/C Trial Handle Angled330320%
Duraloc Curved Cup Impactor310190%
Attune1,9581,9440%
Pinnacle6894990.1%
Sigma Hp Fbt Keel Punch Impact21900%
Impactor F/Pfna Blade28400%
Sp 2 Femoral Impactor24620%

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 Sigma Hp Fem Notch Impactor reports

How many FDA reports name Sigma Hp Fem Notch Impactor?

262 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 8 in the latest 12 months.

What kinds of events are reported?

malfunction (98.9%) and injury (1.1%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

break (79%), scratched material (3.8%), material deformation (3.1%), material integrity problem (2.3%) and crack (1.9%). 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 Sigma Hp Fem Notch Impactor 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.