The pain in the leg socket behind the knee is unable to walk, which may be caused by soft tissue injury, popliteal cyst, osteoarthritis, etc. According to the cause of the disease, general treatment, medication, physical therapy and surgery can be adopted for treatment. 1. Soft tissue injury: trauma can lead to soft tissue injury such as muscles, ligaments and joint capsule in the leg socket area, attention should be paid to rest and braking of the affected limbs, reduce the weight bearing and activities of the affected limbs, and it can be recovered gradually. 2. Popliteal cyst: strenuous exercise or sedentary standing and other factors can induce popliteal cysts, can choose to puncture and pumping, local injection of steroids, when the cysts are large and symptoms of compression, surgical resection of the cysts should be selected. 3. Osteoarthritis: degenerative changes in the knee joint can lead to osteoarthritis, non-steroidal anti-inflammatory drugs such as ibuprofen, acetaminophen and other anti-inflammatory and analgesic effect, you can also choose to hot compresses, ultrashort wave and other physical therapy, the symptoms of serious cases should be treated with surgery. When patients appear behind the knee leg pain can not walk, should be timely to the hospital, clear cause for targeted treatment, the above drugs should be strictly in accordance with the doctor’s instructions, to avoid blindly use their own medication, resulting in adverse consequences.