Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Short description of the four clusters
| Type | Population, % | Affected side | Description | |
|---|---|---|---|---|
| Cluster 1 | Mild OA | 47 | Medial | No denuded bone and slow progression |
| Cluster 2 | Classical OA | 27 | Medial | Minor areas of denuded bone and moderate progression |
| Cluster 3 | Aggressive OA | 15 | Lateral | Strong cartilage destruction and progression |
| Cluster 4 | Aggressive OA | 12 | Medial | Strong cartilage destruction and progression |
