510(k) · Cleared
ClearedKisar Stratford SI Screw System
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Anjali Investments L.L.C · OUR Sacroiliac Joint Fixation
Cleared on Apr 24, 2023 as substantially equivalent to K021932 (Synthes (Usa), 2002) and 2 other predicates after a 448-day review. Its family tree reaches back 16 generations to 1984.
- Decided
- Apr 24, 2023
- Review
- 448 days
- Class
- Class II
- Product code
- OUR
- Recalls
- None
- Predicates
- 3
Its longest line of descent runs back 16 generations to K841189 (1984). 128 ancestors in all. No later device cites it as a predicate yet.
- Root · 16 generations backK841189 Oec/Rezaian Spinal FixatorOrthopedic Equipment Co., Inc. · 1984
- 12 generations between
- 3 generations backK150231 Navigated Disc Prep Instruments and CAPSTONE TrialsMedtronic Sofamor Danek USA, Inc. · 2015
- 2 generations backK161210 RIALTO (TM) SI Fusion System, Medtronic Reusable Instruments for Use…Medtronic Sofamor Danek · 2016
- 1 generation backK191748 Genesys Spine Sacroiliac Joint Fusion SystemGenesys Spine · 2019
- This deviceK220274 Kisar Stratford SI Screw SystemAnjali Investments L.L.C · 2023
Show all 16 generations
- Root · 16 generations backK841189 Oec/Rezaian Spinal FixatorOrthopedic Equipment Co., Inc. · 1984
- 15 generations backK990148 Stackable Cage SystemDepuy Motech Acromed · 1999
- 14 generations backK003043 Surgical Titanium Mesh SystemDepuyacromed · 2001
- 13 generations backK022793 Tetris Spinal ImplantSignus Medical, LLC · 2003
- 12 generations backK031757 Peek Tetris Spinal ImplantSignus Medical, LLC · 2003
- 11 generations backK041888 Curved Peek Tetris Spinal ImplantSignus Medizintechnik GmbH · 2004
- 10 generations backK042930 Spacevision Cage SystemSpine Vision, Inc. · 2004
- 9 generations backK062759 Paramount VBR SystemInnovative Spinal Technologies, Inc. · 2007
- 8 generations backK072120 Paramount Intervertebral Body Fusion DeviceInnovative Spinal Technologies, Inc. · 2007
- 7 generations backK073291 Capstone Spinal SystemMedtronic Sofamor Danek USA, Inc. · 2008
- 6 generations backK100175 Clydesdale Spinal SystemMedtronic Sofamor Danek · 2010
- 5 generations backK112405 Clydesdales Spinal SystemMedtronic Sofamor Danek USA, Inc. · 2011
- 4 generations backK131425 Navigated Capstone Trials, Clydesdale Trials, Capstone & Clydesdale…Medtronic Navigation, Inc. · 2013 · Recalled
- 3 generations backK150231 Navigated Disc Prep Instruments and CAPSTONE TrialsMedtronic Sofamor Danek USA, Inc. · 2015
- 2 generations backK161210 RIALTO (TM) SI Fusion System, Medtronic Reusable Instruments for Use…Medtronic Sofamor Danek · 2016
- 1 generation backK191748 Genesys Spine Sacroiliac Joint Fusion SystemGenesys Spine · 2019
- This deviceK220274 Kisar Stratford SI Screw SystemAnjali Investments L.L.C · 2023
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −16 | K841189 | Oec/Rezaian Spinal Fixator | Orthopedic Equipment Co., Inc. | 1984 | — |
| −15 | K990148 | Stackable Cage System | Depuy Motech Acromed | 1999 | — |
| −14 | K003043 | Surgical Titanium Mesh System | Depuyacromed | 2001 | — |
| −13 | K022793 | Tetris Spinal Implant | Signus Medical, LLC | 2003 | — |
| −12 | K031757 | Peek Tetris Spinal Implant | Signus Medical, LLC | 2003 | — |
| −11 | K041888 | Curved Peek Tetris Spinal Implant | Signus Medizintechnik GmbH | 2004 | — |
| −10 | K042930 | Spacevision Cage System | Spine Vision, Inc. | 2004 | — |
| −9 | K062759 | Paramount VBR System | Innovative Spinal Technologies, Inc. | 2007 | — |
| −8 | K072120 | Paramount Intervertebral Body Fusion Device | Innovative Spinal Technologies, Inc. | 2007 | — |
| −7 | K073291 | Capstone Spinal System | Medtronic Sofamor Danek USA, Inc. | 2008 | — |
| −6 | K100175 | Clydesdale Spinal System | Medtronic Sofamor Danek | 2010 | — |
| −5 | K112405 | Clydesdales Spinal System | Medtronic Sofamor Danek USA, Inc. | 2011 | — |
| −4 | K131425 | Navigated Capstone Trials, Clydesdale Trials, Capstone & Clydesdale Inserter | Medtronic Navigation, Inc. | 2013 | 10 |
| −3 | K150231 | Navigated Disc Prep Instruments and CAPSTONE Trials | Medtronic Sofamor Danek USA, Inc. | 2015 | — |
| −2 | K161210 | RIALTO (TM) SI Fusion System, Medtronic Reusable Instruments for Use with the… | Medtronic Sofamor Danek | 2016 | — |
| −1 | K191748 | Genesys Spine Sacroiliac Joint Fusion System | Genesys Spine | 2019 | — |
| 0 (this device) | K220274 | Kisar Stratford SI Screw System | Anjali Investments L.L.C | 2023 | — |
Other ancestors by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 8 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 7 | 0 |
| 2001 | 8 | 0 |
| 2002 | 8 | 0 |
| 2003 | 4 | 0 |
| 2004 | 6 | 0 |
| 2005 | 7 | 0 |
| 2006 | 3 | 0 |
| 2008 | 5 | 0 |
| 2009 | 1 | 0 |
| 2010 | 2 | 0 |
| 2011 | 6 | 0 |
| 2012 | 2 | 0 |
| 2013 | 6 | 0 |
| 2014 | 2 | 0 |
| 2015 | 1 | 0 |
| 2016 | 1 | 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 OUR? 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 OUR device
- #1 K233508 iFuse Bedrock Granite® Implant Systemscore 30.7 · 31 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against? (3)
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 |
|---|---|---|---|
| * | K021932 | Synthes 6.5 MM Cannulated ScrewSummary page 4…CFR 888.3040) Device Classification: Class II Reviewing Panel: Orthopedic Product Code: OUR Primary Predicate Device: K021932 - Synthes 6.5 cannulated bone screw, partially threaded. The primary predicate device has not be… | 2002 |
| * | K191748 | Genesys Spine Sacroiliac Joint Fusion SystemSummary page 4…nnulated bone screw, partially threaded. The primary predicate device has not been subject to a recall. Additional Predicate Device: K191748 – Genesys Spine Sacroiliac Joint Fusion System K152237 – CoreLink Entasis® SI Joint Fusion Syste… | 2019 |
| * | K152237 | The Entasis Dual-Lead Sacroiliac ImplantSummary page 4…edicate device has not been subject to a recall. Additional Predicate Device: K191748 – Genesys Spine Sacroiliac Joint Fusion System K152237 – CoreLink Entasis® SI Joint Fusion System Device Description: The Kisar Stratford SI Screw System consists of threaded, fenest… | 2016 |
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 39 years and passes through 12 companies; a new generation was cleared every 1.7 years on median.
- 19 of the 128 ancestors have a recall of any class.
- 61 other devices also cite its predicate K021932.
How does its category compare?
All OUR devicesOUR Sacroiliac Joint Fixation: FDA decisions, review times, recalls and adverse event reports over 20 years. 2023, this device’s year, is highlighted.
FDA decisions per year · OUR
14in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · OUR
97in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · OUR
1in 2025
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · OUR
10in 2025
MAUDE reports naming product code OUR, 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 | 0 | — | 0 | 0 |
| 2008 | 1 | — | 0 | 0 |
| 2009 | 1 | — | 0 | 0 |
| 2010 | 1 | — | 0 | 0 |
| 2011 | 3 | 27 | 0 | 6 |
| 2012 | 2 | — | 0 | 81 |
| 2013 | 4 | 103 | 0 | 96 |
| 2014 | 3 | 91 | 0 | 146 |
| 2015 | 8 | 111 | 0 | 119 |
| 2016 | 6 | 168 | 0 | 122 |
| 2017 | 4 | 120 | 0 | 157 |
| 2018 | 7 | 82 | 0 | 137 |
| 2019 | 7 | 89 | 0 | 175 |
| 2020 | 7 | 88 | 0 | 148 |
| 2021 | 9 | 85 | 0 | 154 |
| 2022 | 14 | 149 | 0 | 23 |
| 2023 | 20 | 55 | 0 | 7 |
| 2024 | 15 | 74 | 0 | 15 |
| 2025 | 14 | 97 | 1 | 10 |
| 2026 | 6 | 98 | 1 | — |
What is it indicated for?
The Kisar Stratford SI Screw system is intended for fusion of the sacroiliac joint for conditions including SI joint dysfunction resulting from SI joint disruption or degenerative sacroiliitis.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K220274 · printed Nov 6, 2026
Cite this page
510(k) Report. “K220274: Kisar Stratford SI Screw System.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K220274
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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