# K173491: RTS Lesser MTP Implant System

- Pathway: 510(k) (Traditional)
- Applicant: In2bones USA, LLC
- Decided: Feb 23, 2018 after 102 days
- Product code: KWH (Prosthesis, Toe, Constrained, Polymer)
- Device class: 2
- Regulation: 21 CFR 888.3720
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 2 generations back to K884739 (1989). 4 ancestors in all.
1 later device descends from it; 1 cites it directly.
0 of 6 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K022886: Metatarsophalangeal Flexible Stabilizing Rod System, Osteomed Corp. (2002) Summary page 6.
- K023531: Lesser Metatarsal Phalangeal Joint Implant, Nexa Orthopedics, Inc. (2003) Summary page 6.

## Most influential descendants
- K190385: CoLink Plating System, Fracture and Correction System, RTS Implant System, NeoSpan Compression Staple System (2019), 0 descendants of its own

## Indications for use
The RTS® Lesser MTP Implant is intended for use in the treatment of: • Partial or complete dislocation of the lesser metatarsophalangeal joint • Pain associated with either rheumatoid or osteoarthritis • Repair of unsuccessful arthroplasties of the lesser metatarsophalangeal joint • Stiffness at the lesser metatarsophalangeal joint associated with joint disease • Hammertoe deformity where the proximal phalanx is dorsally located on the metatarsal in a fixed contracture state.

Source page: https://510kreport.com/device/K173491
Methodology: https://510kreport.com/methodology