# K864671: Anatomic Modular Knee (Amk) System

- Pathway: 510(k) (Traditional)
- Applicant: Depuy, Inc.
- Decided: Feb 6, 1987 after 66 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
No predicates in its family tree.
9 later devices descend from it; 3 cite it directly.
0 of 10 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
- K100981: United Stem, Psa Type (2010), 3 descendants of its own
- K991106: P.F.C. Sigma Porous Modular Keel Tibial Tray (1999), 3 descendants of its own
- K190100: USTAR II System (2019), 2 descendants of its own
- K182301: PFC SIGMA Knee System (2019), 1 descendant of its own
- K252303: Stem Extension Line (USTAR II System) (2025), 0 descendants of its own

Source page: https://510kreport.com/device/K864671
Methodology: https://510kreport.com/methodology