Fig. 4From: The use of posteromedial portal for arthroscopic treatment of synovial chondromatosis of the knee: a case reporta Arthroscopic approach to the posteromedial compartment of the knee using a posteromedial (PM) portal. A 70° arthroscope from the anterolateral (AL) portal through the intercondylar tunnel, with the knee in 90° of flexion and forceps introduced through the PM portal. b Arthroscopic view of loose bodies removal using a 70° arthroscopeBack to article page