Ankle fracture 5 months back of thigh pain give general treatment, physical therapy, medication and so on. There is no obvious connection between ankle fracture and pain in the back of the thigh. It may be due to the long-term immobilization of ankle fracture and the reduction of lower limb activities, which causes contracture of tendons and muscles in the back of the thigh, and pain occurs once the activity is carried out. You can gradually carry out knee and hip flexion and extension exercises, oral pain medication (diclofenac sodium extended-release tablets). The pain at the back of the thigh may be due to the lower limb throbbing pain caused by lumbar disc herniation, which can be preceded by bed rest, lumbar spine support immobilization, localized hot compresses, physiotherapy (microwave), oral pain medication (ibuprofen), and nutritive nerve medication (methylcobalamin tablets). After the pain is relieved, the lumbar back muscle function exercise is carried out. Five-point support method and swallow flying can be adopted. Pain in the back of the thigh after a fractured ankle is recommended to be actively consulted and treated under the guidance of a physician. The use of drugs need to follow the doctor’s instructions.