Per l knee mri report, what is grade 4 medial compartment chondromalacia with high-grade, full thickness condral loss? mild patellar tendinosis?

Chondromalacia: Chondromalacia grading is basically an estimation of the remaining thickness of cartilage on the end of the bone (articular surface). Grade 1 is essentially the best while grade 4 means full thickness loss of cartilage covering the end of the bone. I would see your orthopedic surgeon for your options in the management of your injury.

Cartilage loss: We all lose cartilage to some degree as we age, which is the cause of arthritis. There is a spectrum from mild thinning, to complete absence. Full thickness chondral loss refers to an area where there is no cartilage. Mild patellar tendonosis refers to a mild inflammation in the patellar tendon, the tendon which connects your patella (knee cap) to your tibia (shin).