FDA product code · Orthopedic
Prosthesis, Ankle, Semi-Constrained, Cemented, Metal/Polymer
69 FDA decisions since 1976. 510(k) reviews decided 2021–2025 took a median of 95 days (half between 58 and 163). 13 recalls name this code, 0 of them Class I. The most-cited predicate is K123954, named by 11 later devices.
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly Download the data (CSV)
Twenty years of HSN at a glance: how often FDA decides these devices, how long 510(k) reviews take, how often they are recalled, and how many adverse event reports name the code.
FDA decisions per year · HSN
3in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · HSN
58in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · HSN
1in 2023
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · HSN
1,645in 2025
MAUDE reports naming product code HSN, 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 | 50 |
| 2008 | 0 | — | 0 | 66 |
| 2009 | 1 | — | 0 | 66 |
| 2010 | 2 | — | 0 | 120 |
| 2011 | 1 | — | 0 | 139 |
| 2012 | 2 | — | 0 | 100 |
| 2013 | 4 | 89 | 3 | 106 |
| 2014 | 2 | — | 0 | 65 |
| 2015 | 3 | 233 | 0 | 73 |
| 2016 | 3 | 216 | 1 | 111 |
| 2017 | 4 | 148 | 2 | 96 |
| 2018 | 4 | 89 | 0 | 187 |
| 2019 | 2 | — | 1 | 277 |
| 2020 | 6 | 234 | 0 | 281 |
| 2021 | 4 | 109 | 3 | 237 |
| 2022 | 1 | — | 2 | 453 |
| 2023 | 6 | 112 | 1 | 796 |
| 2024 | 7 | 115 | 0 | 1,095 |
| 2025 | 3 | 58 | 0 | 1,645 |
| 2026 | 2 | — | 0 | — |
Planning a device in HSN? A 510(k) Report ranks candidate predicates in this code by lineage, citations and recall history, with the review-time outlook.
See the 510(k) ReportRelated product codes
Other codes under 21 CFR 888.3110.