Chondromalacia patella

Grading:
1: Softening and swelling: MR is normal
2: Fissuring, blistering with intact surface
3: Fibrillation, surface erosion
4: erosive changes, exposure of subchondral bone, subchondral signal changes


Image gallery:

Grade II chondromalacia patella

Grade 4 chondromalacia: