510(k) · Cleared
ClearedONX Large External Fixation System
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Orthonovis, Inc. · KTT Appliance, Fixation, Nail/Blade/Plate Combination, Multiple Component
Cleared on Aug 25, 2022 as substantially equivalent to K110965 (Renovis Surgical Technologies, LLC, 2011) after a 254-day review. Its family tree reaches back 3 generations to 1981.
- Decided
- Aug 25, 2022
- Review
- 254 days
- Class
- Class II
- Product code
- KTT
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 3 generations to K803166 (1981). 8 ancestors in all. No later device cites it as a predicate yet.
- Root · 3 generations backK803166 Double Ball JointHowmedica Corp. · 1981
- 2 generations backK952730 Hoffmann II External Fixation SystemHowmedica Corp. · 1995
- 1 generation backK110965 Renovis T 710 Large External Fixation SystemRenovis Surgical Technologies, LLC · 2011
- This deviceK213905 ONX Large External Fixation SystemOrthonovis, Inc. · 2022
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −3 | K803166 | Double Ball Joint | Howmedica Corp. | 1981 | — |
| −2 | K952730 | Hoffmann II External Fixation System | Howmedica Corp. | 1995 | — |
| −1 | K110965 | Renovis T 710 Large External Fixation System | Renovis Surgical Technologies, LLC | 2011 | — |
| 0 (this device) | K213905 | ONX Large External Fixation System | Orthonovis, Inc. | 2022 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1984 | 1 | 0 |
| 1986 | 1 | 0 |
| 1999 | 1 | 0 |
| 2001 | 2 | 0 |
Sources: FDA 510(k) database (decision fields), the FDA summary (predicates and indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
Planning a device in KTT? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.
Top candidate predicates for a new KTT device
- #1 K242861 TrueLok Elevatescore 21.3 · 14 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against? (1)
Devices the submitter claimed this one is substantially equivalent to (*), and reference devices cited for a specific test or feature (†), as written in the FDA summary.
| Type | Number | Device | Decided |
|---|---|---|---|
| * | K110965 | Renovis T 710 Large External Fixation SystemSummary page 5…Proprietary or Manufacturer Product Predicate Number Model Name Code Type K110965 Renovis T 710 Large Renovis Surgical Technologies, LLC KTT Primary External Fixation System… | 2011 |
What descends from it?
No later submission names this one as a predicate yet.
Has anything in its family been recalled? (0 Class I)
No FDA recall names this device.
No ancestor or descendant has a Class I recall.
What does this lineage say?
- The line of descent spans 41 years and passes through 3 companies; a new generation was cleared every 14.7 years on median.
- 1 of the 8 ancestors has a recall of any class.
- 1 other device also cites its predicate K110965.
How does its category compare?
All KTT devicesKTT Appliance, Fixation, Nail/Blade/Plate Combination, Multiple Component: FDA decisions, review times, recalls and adverse event reports over 20 years. 2022, this device’s year, is highlighted.
FDA decisions per year · KTT
10in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · KTT
88in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · KTT
2in 2021
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · KTT
673in 2025
MAUDE reports naming product code KTT, not matched to any one device; reports are not rates.
View these four charts as a table
| Year | Decisions | Median 510(k) review, days | Recalls (Class I) | MAUDE reports |
|---|---|---|---|---|
| 2007 | 9 | 55 | 2 | 45 |
| 2008 | 11 | 73 | 1 | 66 |
| 2009 | 11 | 94 | 2 | 45 |
| 2010 | 12 | 148 | 1 | 121 |
| 2011 | 10 | 157 | 0 | 196 |
| 2012 | 9 | 140 | 4 | 527 |
| 2013 | 7 | 87 | 7 | 898 |
| 2014 | 14 | 129 | 0 | 445 |
| 2015 | 12 | 60 | 0 | 401 |
| 2016 | 10 | 142 | 0 | 400 |
| 2017 | 11 | 184 | 1 | 485 |
| 2018 | 6 | 149 | 14 | 597 |
| 2019 | 8 | 110 | 3 | 800 |
| 2020 | 9 | 200 | 0 | 942 |
| 2021 | 10 | 83 | 2 | 961 |
| 2022 | 3 | 25 | 0 | 627 |
| 2023 | 7 | 29 | 0 | 554 |
| 2024 | 5 | 90 | 0 | 523 |
| 2025 | 10 | 88 | 0 | 673 |
| 2026 | 5 | 68 | 11 | — |
What is it indicated for?
Stabilization/fixation of:
Long bone fractures in tibia and femur
Fractures of pelvis and ankle
Peri-articular and intra-articular fractures of knee and ankle
Joint arthrodesis
Non-unions and mal-unions
Osteotomies
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K213905 · printed Nov 6, 2026
Cite this page
510(k) Report. “K213905: ONX Large External Fixation System.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K213905
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Record history
- FDA decision record loaded May 2, 2026
- Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026