# K170648: ANTHEM CR Total Knee System

- Pathway: 510(k) (Traditional)
- Applicant: Smith & Nephew, Inc.
- Decided: May 11, 2017 after 69 days
- Product code: JWH (Prosthesis, Knee, Patellofemorotibial, Semi-Constrained, Cemented, Polymer/Metal/Polymer)
- Device class: 2
- Regulation: 21 CFR 888.3560
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 8 generations back to K951987 (1995). 13 ancestors in all.
4 later devices descend from it; 1 cites it directly.
0 of 18 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K142807: ANTHEM PS Total Knee System, Smith & Nephew, Inc. (2014) Summary page 4.
- K112941: Legion Narrow Oxinium Cruciate Retaining and Posterior Stabilized Fenoral Components, Smith & Nephew, Inc. (2011) Summary page 5.
- K041825: Smith & Nephew Genesis II Deep Flexion Cruciate Retaining Articular Insert, Smith & Nephew, Inc. (2005) Summary page 4.
- K951987: Genesis II Total Knee System, Smith & Nephew Richards, Inc. (1995) Summary page 4.

## Most influential descendants
- K230653: Smith & Nephew, Inc. ANTHEM Total Knee System, Genesis Uni Knee System, JOURNEY BCS and II Knee Systems, JOURNEY II CR Knee System, JOURNEY II Uni Knee System, Journey II UK Knee System, JOURNEY II XR Bi-Cruciate Retaining Knee System, JOURNEY PFJ System, JOURNEY Uni Knee System, Legion Hinge Total Knee System, Legion Total Knee System, ZUK Unicompartmental Knee System, ENGAGE Partial Knee System and Porous Patella and Porous Tibial Baseplates (2023), 3 descendants of its own
- K261462: LANDMARK Total Knee System (2026), 0 descendants of its own
- K241260: ACTIFY™ Unicondylar Knee System (2024), 0 descendants of its own
- K242711: JOURNEY II Unicompartmental Knee System (JOURNEY II UK) (2024), 0 descendants of its own

## Indications for use
1. Rheumatoid arthritis. 2. Post-traumatic arthritis, osteoarthritis, or degenerative arthritis. 3. Failed osteotomies, unicompartmental replacement, or total knee replacement.

Source page: https://510kreport.com/device/K170648
Methodology: https://510kreport.com/methodology