Arthroscopic examination of patella

Following examining the lateral gutters, the arthroscope is brought up and around the condyle to view the trochlea and the undersurface of the patella - the region known as the patello-femoral joint. The probe has reached underneath the patella, where the cartilage is not regular. The probe is able to make a dimple (this softening is referred to as 'chondromalacia'). You can see the fluid inlet in the distance.