“…PCR may occur when certain stresses, in this case due to advancement surgery, are exerted on the articular structures that exceed normal or decreased adaptive capacity 1 . Forces needed to distract the two mandibular fragments during DO might act as a compressive force on distant sites such as the temporomandibular joint 45,52,89 . The loading of the condyles caused by these forces during distraction of 1 mm/day is thought to be gradual, instead of acute, which might prevent or decrease the risk of development of PCR 51,52,83,89,106 , as occasionally observed after BSSO 1,9,30,54,58,75 .…”