Reported Reactions

Devices › Bone mill

Device brand name · Hip instruments cutting instruments

Calcar Mill Small: medical device reports filed with FDA

217 reports name it, 2019–2024. Manufacturer given most often on reports: Depuy Orthopaedics US. Product code LYS.

217
device reports naming the brand
0% of all MAUDE reports · about 29 a year
0
reports, 12 months to August 2026
16 in the 12 months before
100%
classified as malfunction
99% across the product code
0%
classified as death, as reported
0 reports · not verified by FDA

217 medical device reports received by FDA name the brand "Calcar Mill Small" (hip instruments cutting instruments); the manufacturer given most often on reports is Depuy Orthopaedics US; received from January 2019 to November 2024. Brand names are as the reporter or manufacturer wrote them, so one product can appear under several spellings.

0 reports arrived in the 12 months to August 2026, against 16 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 (100%); across all bone mill reports (product code LYS) death is recorded in 0% and malfunction in 99%. Event type is the reporter's classification of the report, not a verified outcome.

The device problems coded most often are failure to cut (95.4%), illegible information (2.3%) and material deformation (2.3%). 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

02040Sep 2021: 0Oct 2021: 2Nov 2021: 1Dec 2021: 102022Jan 2022: 5Feb 2022: 0Mar 2022: 0Apr 2022: 0May 2022: 0Jun 2022: 11Jul 2022: 5Aug 2022: 5Sep 2022: 8Oct 2022: 3Nov 2022: 4Dec 2022: 12023Jan 2023: 8Feb 2023: 11Mar 2023: 40Apr 2023: 0May 2023: 3Jun 2023: 0Jul 2023: 0Aug 2023: 9Sep 2023: 16Oct 2023: 1Nov 2023: 1Dec 2023: 02024Jan 2024: 1Feb 2024: 4Mar 2024: 4Apr 2024: 0May 2024: 11Jun 2024: 0Jul 2024: 1Aug 2024: 27Sep 2024: 5Oct 2024: 7Nov 2024: 4Dec 2024: 02025Jan 2025: 0Feb 2025: 0Mar 2025: 0Apr 2025: 0May 2025: 0Jun 2025: 0Jul 2025: 0Aug 2025: 0Sep 2025: 0Oct 2025: 0Nov 2025: 0Dec 2025: 02026Jan 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

045892019: 520192020: 320202021: 1420212022: 4220222023: 8920232024: 642024

Event type and report source

Event type, as classified on the report

Death0%0
Injury0%0
Malfunction100%217
Other0%0
Not given0%0

Who filed the report

Manufacturer report100%217
Voluntary report0%0
User facility report0%0
Distributor report0%0
Not given0%0

Grey bar: all 1,274 reports carrying product code LYS. Event type is the filer's classification and is not verified by FDA.

Device problems coded

Device problem (FDA code)ReportsShareShare across product code
Failure to cut20795.4%82.2%
Illegible information52.3%1.1%
Material deformation52.3%2.7%
Breakthe device broke20.9%2.4%
Naturally worn20.9%3.8%

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.

In context

MeasureCalcar Mill SmallProduct code LYSAll MAUDE reports
Reports2171,27426,136,888
Share of that pool—17%0%
Classified as death, per 1,000 reports009
Classified as injury0%0.9%36.2%
Classified as malfunction100%99%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 LYS

BrandReportsLatest 12 monthsClassified as death
Calcar Mill Medium48470%
Excel Calcar Mill Large21230%
Summit Calcar Planer-Small19000%
Midas Rex6885910%

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 Calcar Mill Small reports

How many FDA reports name Calcar Mill Small?

217 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 0 in the latest 12 months.

What kinds of events are reported?

malfunction (100%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

failure to cut (95.4%), illegible information (2.3%), material deformation (2.3%), break (0.9%) and naturally worn (0.9%). 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 Calcar Mill Small 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.