The document provides an overview of patents related to knee anatomy, problems, diagnoses, and treatments. It finds that patent filings in this area have significantly increased since 2008. The top assignees are Johnson & Johnson, Zimmer Technology Inc, DJO LLC, Medtronic Inc, and Conformis Inc. The US leads in research activity, followed by GB and DE. The report categorizes patents by problem area, diagnosis method, and treatment type to facilitate further analysis.