# K003504: RT-Plus Modular Cemented Knee Components

- Pathway: 510(k) (Traditional)
- Applicant: Plus Orthopedics
- Decided: May 11, 2001 after 179 days
- Product code: KRO (Prosthesis, Knee, Femorotibial, Constrained, Cemented, Metal/Polymer)
- Device class: 2
- Regulation: 21 CFR 888.3510
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
27 later devices descend from it; 4 cite it directly.
0 of 28 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
- K013340: RT-Plus Knee Additional Components (2001), 20 descendants of its own
- K023667: RT-Plus Solution & RT-Plus Modular Solution Knee (2002), 19 descendants of its own
- K081111: Legion Hinge Knee System (2008), 11 descendants of its own
- K032215: VKS/TC-Plus Revision Knee (2003), 6 descendants of its own
- K121393: Smith & Nephew, Inc. Total Knee System Instrumentation (2012), 5 descendants of its own

Source page: https://510kreport.com/device/K003504
Methodology: https://510kreport.com/methodology