Collapsed lateral knee can usually be treated conservatively. Specific treatment options are chosen on a case-by-case basis, such as rest, warmth, and surgery. 1. Collapsed lateral knee is a depression on the outside of the knee joint. The pain caused by this part can usually be gradually relieved by resting, keeping warm and moving the lower limbs. If the pain is severe, treatment is specific to the condition. 2. If the lateral depression of the kneecap is accompanied by a tibial plateau fracture, it will cause meniscus damage, which usually requires surgical treatment, incision and reduction internal fixation surgery, and iliac bone grafting for the defective part of the bone. Only in this way can the height of the lateral platform be restored and the function of the knee joint be repaired. Lateral knee collapse according to different conditions to choose different treatment programs, if the lateral knee collapse, it is recommended to timely visit the hospital to understand the specifics of the condition, the cause of the treatment.