510(k) Report

FDA product code · Orthopedic

Reamer

HTOClass I21 CFR 888.4540510(k) exempt14 decisions since 197772 recalls

FDA lists HTO as exempt from 510(k): a device of this type needs no clearance unless one of the limits in 21 CFR 888.9 applies, such as a new intended use or a different fundamental technology. 14 FDA decisions since 1977. 72 recalls name this code, 0 of them Class I. The most-cited predicate is K993335, named by 1 later device.

Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly, last Nov 3, 2026 Download the data (CSV)

FIG. A — Illustration, orthopedic panel

Twenty years of HTO 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 · HTO

1in 2011

2011: 1
2007high 1 (2011) · low 0 (2007)2026

2026 to Oct 25, outlined.

Median 510(k) review, days · HTO

Too few HTO 510(k)s in any year since 2007 to give a median.

Recalls per year · HTO

17in 2020

2008: 12010: 212011: 22012: 32013: 12014: 12015: 12016: 72017: 72018: 12020: 17
2007high 21 (2010) · low 0 (2007)2026

Class I (0 since 2007) Class II/III not classified

Adverse event reports per year · HTO

1,046in 2025

2007: 312008: 762009: 812010: 902011: 792012: 1622013: 5232014: 4052015: 6552016: 1,0392017: 1,2342018: 1,8352019: 1,9552020: 1,5312021: 4,8022022: 3,9092023: 4,4012024: 4,7462025: 1,046
2007high 4,802 (2021) · low 31 (2007)2025

MAUDE reports naming product code HTO, not matched to any one device; reports are not rates.

View these four charts as a table
YearDecisionsMedian 510(k) review, daysRecalls (Class I)MAUDE reports
20070—031
20080—176
20090—081
20100—2190
20111—279
20120—3162
20130—1523
20140—1405
20150—1655
20160—71,039
20170—71,234
20180—11,835
20190—01,955
20200—171,531
20210—04,802
20220—03,909
20230—04,401
20240—04,746
20250—01,046
20260—0—
FIG. 1 — HTO by year, 2007–2026Sources: FDA decision databases, recall and enforcement reports, MAUDE · Data through Oct 25, 2026

Planning a device in HTO? 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) Report

Related product codes

Other codes under 21 CFR 888.4540.