Try to avoid sagging with a tibia fracture in a cast to avoid complications such as congestion in the lower extremities. Tibia fracture, the common causes include heavy object striking, kicking, impact injury, and sprains or slips, etc., manifested as swelling and pain in the lower leg, as well as deformity and abnormal activities and other symptoms. The plaster is to play the role of immobilization and braking, tibia fracture cast try to avoid sagging, the affected limb for a long time can cause the affected limb blood flow back to the obstacle, edema, swelling and pain and other symptoms. It is recommended to try to rest in bed, elevate the affected limb to promote blood return. Generally speaking, after the removal of the plaster, you can exercise appropriately to promote recovery. Tibia fracture cast should try to avoid sagging, in order to prevent the lower limb blood return obstacles, usually tibia fracture recovery is good, it is recommended that patients visit the hospital regularly to check, monitor the condition of recovery, and strictly follow the doctor’s instructions.