510(k) · Cleared
ClearedAvon Patello-femoral Joint Prosthesis
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Howmedica Osteonics Corp., Dba Stryker Orthopaedics · KRR Prosthesis, Knee, Patello/Femoral, Semi-Constrained, Cemented, Metal/Polymer
Cleared on Jun 4, 2021 as substantially equivalent to K051948 (Howmedica Osteonics Corp., 2005) after a 36-day review. Its family tree reaches back 1 generation to 2005. 4 later devices descend from it.
- Decided
- Jun 4, 2021
- Review
- 36 days
- Class
- Class II
- Product code
- KRR
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 1 generation to K051948 (2005). 4 later devices descend from it, 1 citing it directly.
- Root · 1 generation backK051948 Avon Patello-Femoral Joint ProsthesisHowmedica Osteonics Corp. · 2005 · Recalled
- This deviceK211303 Avon Patello-femoral Joint ProsthesisHowmedica Osteonics Corp., Dba Stryker Orthopaedics · 2021
- Descendant · cites it directly · 3 of its ownK242831 Triathlon Knee System; Triathlon Pro Posterior Stabilized Femoral…Howmedica Osteonics Corp., Dba Stryker Orthopaedics · 2024
- Descendant · 2 generations on · 0 of its ownK261898 Triathlon® Knee System; Triathlon® Hinge Knee System; Scorpio® Total…Howmedica Osteonics Corp. dba Stryker Orthopaedics · 2026
- Descendant · 2 generations on · 0 of its ownK253637 Triathlon® Total Knee System - Triathlon® X3® Medial Stabilized…Howmedica Osteonics Corp., Dba Stryker Orthopaedics · 2026
- Descendant · 2 generations on · 0 of its ownK252898 Triathlon® Tritanium® Asymmetric Patella; Triathlon® Tritanium®…Howmedica Osteonics Corp., Dba Stryker Orthopaedics · 2025 · Recalled
Most influential descendants
Showing 4 of 4 · See all- K242831Triathlon Knee System; Triathlon Pro Posterior Stabilized Femoral Components; Triathlon…Howmedica Osteonics Corp., Dba Stryker Orthopaedics · 2024 · cites it directly3descendants
- K261898Triathlon® Knee System; Triathlon® Hinge Knee System; Scorpio® Total Knee SystemHowmedica Osteonics Corp. dba Stryker Orthopaedics · 2026 · 2 generations on0descendants
- K253637Triathlon® Total Knee System - Triathlon® X3® Medial Stabilized Tibial Bearing InsertHowmedica Osteonics Corp., Dba Stryker Orthopaedics · 2026 · 2 generations on0descendants
- K252898Triathlon® Tritanium® Asymmetric Patella; Triathlon® Tritanium® Symmetric Patella…Howmedica Osteonics Corp., Dba Stryker Orthopaedics · 2025 · 2 generations on0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −1 | K051948 | Avon Patello-Femoral Joint Prosthesis | Howmedica Osteonics Corp. | 2005 | 7 |
| 0 (this device) | K211303 | Avon Patello-femoral Joint Prosthesis | Howmedica Osteonics Corp., Dba Stryker Orthopaedics | 2021 | — |
| +1 | K242831 | Triathlon Knee System; Triathlon Pro Posterior Stabilized Femoral Components… | Howmedica Osteonics Corp., Dba Stryker Orthopaedics | 2024 | — |
| +2 | K261898 | Triathlon® Knee System; Triathlon® Hinge Knee System; Scorpio® Total Knee System | Howmedica Osteonics Corp. dba Stryker Orthopaedics | 2026 | — |
| +2 | K253637 | Triathlon® Total Knee System - Triathlon® X3® Medial Stabilized Tibial Bearing… | Howmedica Osteonics Corp., Dba Stryker Orthopaedics | 2026 | — |
| +2 | K252898 | Triathlon® Tritanium® Asymmetric Patella; Triathlon® Tritanium® Symmetric… | Howmedica Osteonics Corp., Dba Stryker Orthopaedics | 2025 | 1 |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2024 | 1 | 0 |
| 2025 | 1 | 0 |
| 2026 | 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 KRR? 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 KRR device
- #1 K231253 Overture Orthopaedics Patellofemoral Systemscore 5.6 · 1 generation · 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 |
|---|---|---|---|
| * | K051948 | Avon Patello-Femoral Joint ProsthesisSummary page 4…oduct Codes: KRR Legally Marketed Devices to which Substantial Equivalence is Claimed: Primary Predicate Device: x Avon Patello-femoral Joint Prosthesis (K051948) Reference Devices: x Avon Extra-small Patello-femoral Replacement (K041160) x Avon Patellar Component (K020841) x… | 2005 |
| † | K041160 | Avon Extra-Small Patello-Femoral Replacement | 2004 |
| † | K020841 | Avon Patellar Component | 2002 |
| † | K010100 | Avon Patello-Femoral Joint Prosthesis | 2001 |
What descends from it? (4)
1 later device cites it directly; ranked here by how many devices descend from each in turn.
| Number | Device | Decided | Descendants |
|---|---|---|---|
| K242831 | Triathlon Knee System; Triathlon Pro Posterior Stabilized Femoral Components; Triathlon… | 2024 | 3 |
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?
How does its category compare?
All KRR devicesKRR Prosthesis, Knee, Patello/Femoral, Semi-Constrained, Cemented, Metal/Polymer: FDA decisions, review times, recalls and adverse event reports over 20 years. 2021, this device’s year, is highlighted.
FDA decisions per year · KRR
1in 2023
2026 to Oct 25, outlined.
Median 510(k) review, days · KRR
116in 2008
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · KRR
3in 2022
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · KRR
36in 2025
MAUDE reports naming product code KRR, 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 | 2 | — | 0 | 0 |
| 2008 | 3 | 116 | 0 | 0 |
| 2009 | 0 | — | 0 | 12 |
| 2010 | 0 | — | 0 | 6 |
| 2011 | 0 | — | 0 | 3 |
| 2012 | 1 | — | 0 | 9 |
| 2013 | 1 | — | 1 | 9 |
| 2014 | 0 | — | 0 | 26 |
| 2015 | 1 | — | 0 | 18 |
| 2016 | 1 | — | 1 | 14 |
| 2017 | 0 | — | 2 | 15 |
| 2018 | 1 | — | 0 | 14 |
| 2019 | 0 | — | 0 | 16 |
| 2020 | 1 | — | 0 | 6 |
| 2021 | 1 | — | 0 | 8 |
| 2022 | 1 | — | 3 | 9 |
| 2023 | 1 | — | 0 | 12 |
| 2024 | 0 | — | 0 | 25 |
| 2025 | 0 | — | 0 | 36 |
| 2026 | 0 | — | 0 | — |
What is it indicated for?
The Avon Patello-femoral Joint Prosthesis is intended to be used in cemented patellofemoral arthroplasty in patients with degenerative arthritis in the distal femur and patella, patients with a history of patellar dislocation or patella fracture, or patients with failed previous surgery (arthroscopy, tibial tubercle elevation, lateral release) where pain, deformity or dysfunction persists.
These components are single use only and are intended for implantation with bone cement.
Indications for use read by OCR from a scanned FDA summary, so letters may be misread. Check the PDF before quoting it.
https://510kreport.com/device/K211303 · printed Nov 6, 2026
Cite this page
510(k) Report. “K211303: Avon Patello-femoral Joint Prosthesis.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K211303
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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