Cysts in the knee area are benign lesions that are not particularly serious when analyzed purely by the specific nature of the cyst. These include popliteal cysts, bone cysts, meniscal cysts, and cruciate ligament cysts. In comparison, popliteal cysts are the least serious and have no major effects after surgery. For bone cysts or cruciate ligament cysts, bone grafting or ligament reconstruction surgery is required to remove the cysts, which will have less impact on the joint after recovery. However, meniscus cysts are basically removed, which has a greater impact on the later stages because the meniscus is a good cushion and stabilizer of the knee joint, and its removal can cause premature complications such as traumatic arthritis.