# K211303: Avon Patello-femoral Joint Prosthesis

- Pathway: 510(k) (Traditional)
- Applicant: Howmedica Osteonics Corp., Dba Stryker Orthopaedics
- Decided: Jun 4, 2021 after 36 days
- Product code: KRR (Prosthesis, Knee, Patello/Femoral, Semi-Constrained, Cemented, Metal/Polymer)
- Device class: 2
- Regulation: 21 CFR 888.3540
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 1 generation back to K051948 (2005). 1 ancestor in all.
4 later devices descend 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)
- K051948: Avon Patello-Femoral Joint Prosthesis, Howmedica Osteonics Corp. (2005) Summary page 4.

## Most influential descendants
- K242831: Triathlon Knee System; Triathlon Pro Posterior Stabilized Femoral Components; Triathlon Tritanium Tibial Baseplate; Triathlon Low Profile Tibial Tray; Triathlon Metal Backed Patella; Triathlon Partial Knee System; Avon Patello-femoral Joint Prosthesis; Restoris Multi-Compartmental Knee System (2024), 3 descendants of its own
- K261898: Triathlon® Knee System; Triathlon® Hinge Knee System; Scorpio® Total Knee System (2026), 0 descendants of its own
- K253637: Triathlon® Total Knee System - Triathlon® X3® Medial Stabilized Tibial Bearing Insert (2026), 0 descendants of its own
- K252898: Triathlon® Tritanium® Asymmetric Patella; Triathlon® Tritanium® Symmetric Patella; Triathlon® Symmetric Patella; Triathlon® Asymmetric Patella; Scorpio® Universal Dome Patella; Triathlon® Hinge Bumper (2025), 0 descendants of its own

## Indications for use
The Avon Patello-femoral Joint Prosthesis is intended to be used in cemented patellofemoral arthroplasty in patients with degenerative arthritis in the distal femur and patella, patients with a history of patellar dislocation or patella fracture, or patients with failed previous surgery (arthroscopy, tibial tubercle elevation, lateral release) where pain, deformity or dysfunction persists. These components are single use only and are intended for implantation with bone cement.

Source page: https://510kreport.com/device/K211303
Methodology: https://510kreport.com/methodology