vch.ca The extensor mechanism (EM) of the knee comprises the quadriceps muscles and tendon, the patella, patellar tendon and supporting retinaculum (figure 1). Injuries of the EM are common and may be ...

This pain may result when soccer players strain their patellar tendon, which connects the kneecap to the lower leg bone, the quadricep tendon above the kneecap or the retinaculum (which supports ...