What does a linear fissure formation within the articular cartilage overlying the patella apex mean? This is on a MRI report. Please explain.

Crack. The surface of healthy cartilage is usually smooth and continuous. A fissure is a crack in the cartilage. It can usually be either from a trauma or as a result of a degenerative condition. Don't hesitate to be seen and discuss with an orthopedic surgeon.