# K050924: Merete Duothreadtm Bone Screw

- Pathway: 510(k) (Traditional)
- Applicant: Merete Medical GmbH
- Decided: May 27, 2005 after 44 days
- Product code: HWC (Screw, Fixation, Bone)
- Device class: 2
- Regulation: 21 CFR 888.3040
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 1 generation back to K792022 (1979). 2 ancestors in all.
1 later device descends from it; 1 cites it directly.
0 of 4 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K971070: Scarf Thread-Head (TM) Head Screw, Landos, Inc. (1997) Summary page 1.
- K792022: Herbert Bone Screw, Zimmer, Inc. (1979) Summary page 1.

## Most influential descendants
- K152187: MetaFix LS Locking Screws, Merete Cannulated PCS, Merete CS Cortical Screws, Merete Cannulated HCS, DuoThread Scarf Screws and TwistCut Snap-Off Screws (2016), 0 descendants of its own

## Indications for use
Small bone fracture fixation. Fixation and stabilization of bones of the feet in case of a osteotomy or fusion, such as Scarf-Osteotomy, Chevron-Austin Osteotomy, Akin-Osteotomy, Closing wedge osteotomy, MPG-Arthrodesis as well as for the fixation of almost all common osteotomies of the first metatarsal.

Source page: https://510kreport.com/device/K050924
Methodology: https://510kreport.com/methodology