What is bicompartmental chondromalacia?

Chondromalacia is abnormal softening of cartilage of the joints.

Bicompartmental means relating to two compartments and is normally used referring to something in both the inside and the outside of the knee (the medial and lateral compartments).

So I would assume that bicompartmental chondromalacia is abnormal softening of the cartilage of both the inside and outside of the knee.

Hope this has helped.