Ankle stiffness 4 months after ankle surgery can be facilitated by physical therapy as well as strengthening functional exercises to promote the recovery of ankle function. 4 months after ankle surgery may cause stiffness if no regular and effective exercise is carried out or the ankle joint injury is too serious. You can promote local blood circulation through hot compress, massage and acupressure to improve joint adhesion. You can also go to the rehabilitation department of the hospital for ankle joint functional training by a professional rehabilitator. If the ankle fracture is confirmed to have healed well after 4 months by taking radiographs, you can strengthen the ankle functional exercises. For example, passive ankle flexion and extension exercises can be performed at home with the help of family members, or you can walk on the ground to promote the recovery of ankle flexion and extension function through body weight. If the joint is still stiff 4 months after ankle fracture, it is recommended that the patient go to the hospital for a checkup and regular training under the doctor’s guidance.