An official website of the United States government
Here's how you know
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.
Incidence of Morphologic Articular Cartilage Defects in Preexisting Cartilage Signal Abnormalities (WORMS >1) and in Compartments without Any Preexisting Cartilage Signal Abnormalities at 48 Months
Note.—Unless otherwise indicated, data are number of compartments, and data in parentheses are percentages.