Five weeks after arthroscopic surgery, the edema is still different according to the different causes of the disease. Common causes include obstruction of blood circulation, soft tissue injury, infection, etc. The treatment includes elevation of the affected limbs, proper exercise, medication, and so on. 1. Obstructed blood circulation: If the local blood circulation is obstructed by the lack of activity after arthroscopic surgery and swelling occurs, the lower limbs can be moved appropriately to promote blood circulation, which is conducive to the reduction of swelling. 2. Soft tissue injury: arthroscopic surgery will be accompanied by local soft tissue injury, if the injury has not yet recovered, swelling can occur, you can rest, elevate the affected limbs, oral herbaceous ophthalmic tablets, etc. to reduce swelling and relieve pain. 3. Infection: If there are symptoms such as redness, swelling, fever and pain in the joints after arthroscopic surgery, it may be infected, and it is necessary to improve the blood test and bacterial culture, and then use sensitive antibiotics to fight infection, such as cefminox and so on. Five weeks after arthroscopic surgery is still edema, it is recommended to timely follow-up, under the guidance of the doctor’s treatment.