Mine cleared up on its own after a year.

Had an MRI that indicates level 2 chondro, fat pad inflammation under kneecap, and a tiny cyst, which some say can be caused by meniscus injury.

I swapped out the road doubles for compacts and triples.

I also rubbed Penetrex on it twice daily. YMMV.

Eventually, I was able to ride up Mauna Kea without knee pain.