Devices › Accessories, arthroscopic
Device brand name · Manual instr general surgical
Knee Scorpion: medical device reports filed with FDA
471 reports name it, 2016–2026. Manufacturer given most often on reports: Arthrex. Product code NBH.
- 471
- device reports naming the brand
- 0% of all MAUDE reports · about 46 a year
- 81
- reports, 12 months to August 2026
- 104 in the 12 months before
- 93.4%
- classified as malfunction
- 84.9% across the product code
- 0%
- classified as death, as reported
- 0 reports · not verified by FDA
471 medical device reports received by FDA name the brand "Knee Scorpion" (manual instr general surgical); the manufacturer given most often on reports is Arthrex; received from April 2016 to August 2026. Brand names are as the reporter or manufacturer wrote them, so one product can appear under several spellings.
81 reports arrived in the 12 months to August 2026, down 22% from 104 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 (93.4%) and injury (6.6%); across all accessories, arthroscopic reports (product code NBH) death is recorded in 0% and malfunction in 84.9%. Event type is the reporter's classification of the report, not a verified outcome.
The device problems coded most often are break (62.2%), device damaged by another device (16.8%) and difficult to open or close (4.2%). The patient problems coded most often are foreign body in patient, appropriate clinical signs, symptoms and conditions term/code not available and failure of implant. 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
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
Event type and report source
Event type, as classified on the report
Who filed the report
Grey bar: all 5,174 reports carrying product code NBH. Event type is the filer's classification and is not verified by FDA.
Device problems coded
| Device problem (FDA code) | Reports | Share | Share across product code |
|---|---|---|---|
| Breakthe device broke | 293 | 62.2% | 47% |
| Device damaged by another device | 79 | 16.8% | 2% |
| Difficult to open or close | 20 | 4.2% | 2.8% |
| Physical resistance/sticking | 19 | 4% | 0.7% |
| Mechanical jam | 14 | 3% | 3.2% |
| Failure to advance | 6 | 1.3% | 0.4% |
| Material fragmentation | 6 | 1.3% | 2.5% |
| Defective devicethe device was defective | 5 | 1.1% | 0.5% |
| Detachment of device or device componentpart of the device came off | 2 | 0.4% | 6.1% |
| Device damaged prior to usethe device was damaged before use | 2 | 0.4% | 0.2% |
| Device dislodged or dislocated | 2 | 0.4% | 0.5% |
| Failure to fire | 2 | 0.4% | 0.1% |
| Material twisted/bent | 2 | 0.4% | 3.3% |
| Mechanical problema mechanical problem | 2 | 0.4% | 0.3% |
| Positioning failure | 2 | 0.4% | 0.2% |
| Retraction problem | 2 | 0.4% | 0.5% |
| Activation problem | 1 | 0.2% | 0% |
| Complete blockage | 1 | 0.2% | 0% |
| Corrodedthe device corroded | 1 | 0.2% | 1.1% |
| Difficult to removethe device was hard to remove | 1 | 0.2% | 0.6% |
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) | Reports | Share |
|---|---|---|
| Foreign body in patientpart of a device left in the patient | 16 | 3.4% |
| Appropriate clinical signs, symptoms and conditions term/code not available | 4 | 0.8% |
| Failure of implant | 3 | 0.6% |
Patient problem codes are present mainly in reports filed since 2019 and are often blank.
In context
| Measure | Knee Scorpion | Product code NBH | All MAUDE reports |
|---|---|---|---|
| Reports | 471 | 5,174 | 26,136,888 |
| Share of that pool | — | 9.1% | 0% |
| Classified as death, per 1,000 reports | 0 | 0 | 9 |
| Classified as injury | 6.6% | 14.6% | 36.2% |
| Classified as malfunction | 93.4% | 84.9% | 62.3% |
| Filed by the manufacturer | 99.8% | 96.3% | 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 NBH
| Brand | Reports | Latest 12 months | Classified as death |
|---|---|---|---|
| Firstpass Mini Straight | 266 | 66 | 0% |
| Arthro Pusher/Cutter Ea | 241 | 48 | 0% |
| 5mm Ratcheted Handle 33cm | 236 | 0 | 0% |
| Prestige Atra Grasper Dbl-Act 5mm | 255 | 0 | 0% |
| 4 0mm Aggressive Plus Cutter Formula 5bx | 150 | 0 | 0% |
| Advantage Turbo Shaver 2 Button Basic | 228 | 0 | 0% |
| Stryker | 559 | 5 | 1.3% |
| Ultra Fast-Fix Assembly - Curved | 1,093 | 64 | 0% |
| Arthrex | 332 | 28 | 0% |
| Disp Firstpass Str Passr Self | 238 | 29 | 0% |
| Drive Shaft-Minimum 520mm Length-For Use With Ria | 413 | 0 | 0.2% |
| Endobutton | 199 | 0 | 0% |
| Healicoil Sa Pk 4 5mm W/2 Ub-Bl Cbrd Bl | 207 | 35 | 0% |
| Lupine Drill Guide | 214 | 0 | 0% |
| Metrx | 415 | 3 | 0% |
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 Knee Scorpion reports
How many FDA reports name Knee Scorpion?
471 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 81 in the latest 12 months.
What kinds of events are reported?
malfunction (93.4%) and injury (6.6%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.
What device problems are coded?
break (62.2%), device damaged by another device (16.8%), difficult to open or close (4.2%), physical resistance/sticking (4%) and mechanical jam (3%). These are FDA's device problem codes as entered on the report.
Who files these reports?
manufacturer reports (99.8%). Manufacturers and user facilities are required to report; voluntary reports come from health professionals and the public.
Do these reports show that Knee Scorpion 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.