510(k) · Cleared

Cleared

Bilok ST Screw

K033792510(k) TraditionalCleared Mar 1, 200487-day reviewClass II21 CFR 888.3040

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

Biocomposites, Ltd. · HWC Screw, Fixation, Bone

Cleared on Mar 1, 2004 as substantially equivalent to K011172 (Arthrex, Inc., 2001) and 2 other predicates after an 87-day review. Its family tree reaches back 2 generations to 2001.

Decided: Mar 1, 2004
Review: 87 days
Class: Class II
Product code: HWC
Recalls: None
Predicates: 3

Its longest line of descent runs back 2 generations to K003641 (2001). 4 ancestors in all, the oldest K002070 (2000). No later device cites it as a predicate yet.

By dateBy generation

Root · 2 generations backK003641 Biolok Screw, Biosteon ScrewBiocomposites, Ltd. · 2001
1 generation backK021351 Biosteon Cross PinBiocomposites, Ltd. · 2002 · Recalled
This deviceK033792 Bilok ST ScrewBiocomposites, Ltd. · 2004

View FIG. 1 as a table

Line of descent and top descendants

Generation	Number	Device	Applicant	Decided	Recalls
−2	K003641	Biolok Screw, Biosteon Screw	Biocomposites, Ltd.	2001	—
−1	K021351	Biosteon Cross Pin	Biocomposites, Ltd.	2002	1
0 (this device)	K033792	Bilok ST Screw	Biocomposites, Ltd.	2004	—

Other ancestors by year cleared

Year cleared	Devices	With a Class I recall
2000	1	0
2001	1	0

FIG. 1 — Lineage of K033792, 2001–2004Source: FDA 510(k) summaries, read by 510(k) Report · How lineage is built

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 HWC? 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 HWC device

#1 K203011 Monster Screw Systemscore 22.2 · 14 generations · no Class I recall
#2 Held for the reportin the report
#3 Held for the reportin the report

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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	Applicant	Decided	Recalls
*	K011172	Arthrex Bio-Transfix Summary page 1 …Threaded Fixation Pin Bioresorbable ACL device Proprietary Name: BiLok® ST Screw Predicate Device Arthrex. Bio Transfix cross pin KO(011172 BiLok Screw K002070 Biosteon Cross Pin K021351 Device Function To hold a soft tissu…	Arthrex, Inc.	2001	—
*	K002070	Biolok Screw Summary page 1 …sorbable ACL device Proprietary Name: BiLok® ST Screw Predicate Device Arthrex. Bio Transfix cross pin KO(011172 BiLok Screw K002070 Biosteon Cross Pin K021351 Device Function To hold a soft tissue graft in position during healing…	Biocomposites, Ltd.	2000	—
*	K021351	Biosteon Cross Pin Summary page 1 …ary Name: BiLok® ST Screw Predicate Device Arthrex. Bio Transfix cross pin KO(011172 BiLok Screw K002070 Biosteon Cross Pin K021351 Device Function To hold a soft tissue graft in position during healing in the femoral bone tunn…	Biocomposites, Ltd.	2002	1

Also cleared against K011172: 3 other devices →

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 3 years and passes through 1 company; a new generation was cleared every 1.7 years on median.
1 of the 4 ancestors has a recall of any class.
3 other devices also cite its predicate K011172.

How does its category compare?

All HWC devices

HWC Screw, Fixation, Bone: FDA decisions, review times, recalls and adverse event reports over 20 years.

FDA decisions per year · HWC

15in 2025

2007high 41 (2015) · low 15 (2025)2026

2026 to Oct 25, outlined.

Median 510(k) review, days · HWC

111in 2025

2007high 167 (2022) · low 75 (2020)2026

Receipt to decision; years with fewer than 3 clearances left blank.

Recalls per year · HWC

1in 2025

2007high 33 (2008) · low 0 (2023)2026

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

Adverse event reports per year · HWC

2,893in 2025

2007high 5,463 (2019) · low 651 (2009)2025

MAUDE reports naming product code HWC, 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	35	77	25	669
2008	33	76	33	660
2009	27	113	29	651
2010	23	110	7	765
2011	35	88	12	1,104
2012	20	99	30	3,339
2013	25	90	14	3,850
2014	31	88	2	2,549
2015	41	85	5	2,711
2016	26	131	4	2,285
2017	40	127	4	2,561
2018	20	106	1	3,662
2019	30	108	5	5,463
2020	28	75	4	4,820
2021	26	84	2	4,446
2022	26	167	13	3,934
2023	24	104	0	3,718
2024	17	90	0	3,575
2025	15	111	1	2,893
2026	21	125	2	—

What is it indicated for?

The BiLok® ST Screw is indicated for use in anterior cruciate ligament (ACL) reconstruction procedures.

The BiLok® ST Screw is used to provide suspensary fixation during femoral fixation in ACL reconstruction using a double looped (semitendinosus/gracilis) or quadruple (semitendinosus) graft.

Indications for use as stated in the FDA summary.

https://510kreport.com/device/K033792 · printed Nov 6, 2026

Cite this page

510(k) Report. “K033792: Bilok ST Screw.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K033792

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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