# K921786: Intramedullary Hip Screw

- Pathway: 510(k) (Traditional)
- Applicant: Smith & Nephew Richards, Inc.
- Decided: Jul 17, 1992 after 94 days
- Product code: KTT (Appliance, Fixation, Nail/Blade/Plate Combination, Multiple Component)
- Device class: 2
- Regulation: 21 CFR 888.3030
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
22 later devices descend from it; 4 cite it directly.
0 of 23 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. FDA has not posted a summary or statement for it, so its predicates are not known.

## Most influential descendants
- K021008: Advanced Orthopaedic Solutions Trochanteric Nail (2002), 13 descendants of its own
- K103533: ES Trochanteric Nail, Left and Right, 10MM (2011), 11 descendants of its own
- K120148: Aos Solid Locking Lag Screw, Aos Telescoping Lag Screw (2012), 6 descendants of its own
- K202099: AOS Galileo™ Trochanteric Nail System (2020), 4 descendants of its own
- K140601: Flow-Nail (2014), 2 descendants of its own

Source page: https://510kreport.com/device/K921786
Methodology: https://510kreport.com/methodology