# K210121: ROSA Partial Knee System

- Pathway: 510(k) (Traditional)
- Applicant: Orthosoft D/B/A Zimmer Cas
- Decided: Apr 19, 2021 after 90 days
- Product code: OLO (Orthopedic Stereotaxic Instrument)
- Device class: 2
- Regulation: 21 CFR 882.4560
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 14 generations back to K905070 (1991). 60 ancestors in all.
1 later device descends from it; 1 cites it directly.
0 of 62 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K182964: ROSA Knee System, Orthosoft Inc (D/B/A Zimmer Cas) (2019)
- K170584: Mako Partial Knee Application, Mako Surgical Corp. (2017) Summary page 4.

## Most influential descendants
- K232533: ROSA Partial Knee System (2023), 0 descendants of its own

## Indications for use
The ROSA® Partial Knee System, for use with the ROSA® RECON platform, is indicated as a stereotaxic instrumentation system for Partial Knee replacement (PKA) surgery. It is to assist the surgeon in providing software-defined spatial boundaries for orientation and reference information to identifiable anatomical structures for the accurate placement of the knee implant components. The robotic arm placement is performed relative to anatomical landmarks as recorded using the system intraoperatively, and optionally based on a three-dimensional representation of the bone structures determined preoperatively using compatible X-ray or MRI based imaging technologies. It includes a robotic arm, an optical sensor navigation system and accessories, software system, surgical instruments and accessories. The ROSA® Partial Knee System is designed for use on a skeletally mature patient population. The targeted population has the same characteristics as the population that is suitable for the implants compatible with the ROSA® Partial Knee System. The ROSA® Partial Knee System is to be used with Persona Partial Knee (PPK) fixed bearing knee replacement system in accordance with its indications and contraindications.

Source page: https://510kreport.com/device/K210121
Methodology: https://510kreport.com/methodology