Reported Reactions

Devices › Appliance, fixation, spinal intervertebral body

Device brand name · Appliance fixation spinal intervertebral body

Unknown K2m Product: medical device reports filed with FDA

269 reports name it, 2019–2026. Manufacturer given most often on reports: K2m. Product code KWQ.

269
device reports naming the brand
0% of all MAUDE reports · about 39 a year
37
reports, 12 months to August 2026
48 in the 12 months before
38.3%
classified as malfunction
42.4% across the product code
0%
classified as death, as reported
0 reports · not verified by FDA

269 medical device reports received by FDA name the brand "Unknown K2m Product" (appliance fixation spinal intervertebral body); the manufacturer given most often on reports is K2m; received from August 2019 to March 2026. Brand names are as the reporter or manufacturer wrote them, so one product can appear under several spellings.

37 reports arrived in the 12 months to August 2026, down 23% from 48 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 (61.7%) and malfunction (38.3%); across all appliance, fixation, spinal intervertebral body reports (product code KWQ) death is recorded in 0.6% and malfunction in 42.4%. Event type is the reporter's classification of the report, not a verified outcome.

The device problems coded most often are fracture (40.5%), migration (33.8%) and insufficient device problem information (14.1%). The patient problems coded most often are pain, injury and dysphagia/ odynophagia. 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

0713Sep 2021: 2Oct 2021: 3Nov 2021: 2Dec 2021: 42022Jan 2022: 5Feb 2022: 3Mar 2022: 0Apr 2022: 3May 2022: 0Jun 2022: 2Jul 2022: 1Aug 2022: 0Sep 2022: 4Oct 2022: 2Nov 2022: 12Dec 2022: 32023Jan 2023: 2Feb 2023: 0Mar 2023: 0Apr 2023: 0May 2023: 1Jun 2023: 7Jul 2023: 1Aug 2023: 3Sep 2023: 2Oct 2023: 2Nov 2023: 2Dec 2023: 02024Jan 2024: 1Feb 2024: 0Mar 2024: 0Apr 2024: 2May 2024: 2Jun 2024: 4Jul 2024: 0Aug 2024: 0Sep 2024: 7Oct 2024: 4Nov 2024: 3Dec 2024: 132025Jan 2025: 8Feb 2025: 8Mar 2025: 1Apr 2025: 2May 2025: 0Jun 2025: 0Jul 2025: 0Aug 2025: 2Sep 2025: 5Oct 2025: 2Nov 2025: 13Dec 2025: 52026Jan 2026: 3Feb 2026: 3Mar 2026: 6Apr 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

027542019: 1820192020: 4820202021: 5420212022: 3520222023: 2020232024: 3620242025: 4620252026: 122026

Event type and report source

Event type, as classified on the report

Death0%0
Injury61.7%166
Malfunction38.3%103
Other0%0
Not given0%0

Who filed the report

Manufacturer report100%269
Voluntary report0%0
User facility report0%0
Distributor report0%0
Not given0%0

Grey bar: all 10,584 reports carrying product code KWQ. Event type is the filer's classification and is not verified by FDA.

Device problems coded

Device problem (FDA code)ReportsShareShare across product code
Fracturea broken bone10940.5%8.4%
Migrationthe device moved from where it was placed9133.8%4.7%
Insufficient device problem information3814.1%4.1%
Device dislodged or dislocated145.2%5.4%
Biocompatibility72.6%0.3%
Detachment of device or device componentpart of the device came off62.2%1.8%
Material deformation51.9%1.3%
Material separation51.9%1.8%
Mechanical problema mechanical problem51.9%1.7%
Migration or expulsion of device51.9%6.7%
Malposition of device41.5%1.8%
Difficult to insertthe device was hard to insert20.7%1.4%
Failure to osseointegrate20.7%0.3%
Improper or incorrect procedure or method20.7%0.6%
Mechanical jam20.7%0.4%
Positioning problem20.7%0.7%
Defective component10.4%0%
Disconnection10.4%0.1%
Microbial contamination of device10.4%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
Painpain, site not specified2910.8%
Injurya physical injury259.3%
Dysphagia/ odynophagia83%
Appropriate clinical signs, symptoms and conditions term/code not available62.2%
Neck painneck pain62.2%
Bacterial infectiona bacterial infection51.9%
Failure of implant41.5%
Spinal column injury31.1%
Balance problems20.7%
Bone fracture(s)20.7%
Discomfortdiscomfort20.7%
Paraplegia20.7%
Paresis20.7%
Tissue breakdown20.7%
Vertebral fracture20.7%

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

In context

MeasureUnknown K2m ProductProduct code KWQAll MAUDE reports
Reports26910,58426,136,888
Share of that pool—2.5%0%
Classified as death, per 1,000 reports069
Classified as injury61.7%54.1%36.2%
Classified as malfunction38.3%42.4%62.3%
Filed by the manufacturer100%95%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 KWQ

BrandReportsLatest 12 monthsClassified as death
ATLANTIS Anterior Cervical Plate System565181.6%
CD HORIZON Spinal System9,7876340.3%
Venture Anterior Cervical Plate System20940.5%
Resonate22770.9%
Zevo Anterior Cervical Plate System157130.6%
Collect No Qas Spine Anterior Stabilis26900%
Tsrh Spinal Fixation System15400%
Unknown_Spine_Product596240%
Synthes47000.6%
Incompass17000%
Tsrh Spinal System45700.4%
Pivox Oblique Lateral Spinal System25550%
Stardrive Screwdriver Shaft T8 105mm329430%
Screw64700%
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 Unknown K2m Product reports

How many FDA reports name Unknown K2m Product?

269 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 37 in the latest 12 months.

What kinds of events are reported?

injury (61.7%) and malfunction (38.3%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

fracture (40.5%), migration (33.8%), insufficient device problem information (14.1%), device dislodged or dislocated (5.2%) and biocompatibility (2.6%). 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 Unknown K2m Product 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.