There are many reasons for the symptoms of cramps after a leg fracture: 1. It may be due to the intermittent muscle spasms caused by the pain of the local trauma that has not fully recovered after the fracture. 2. It may be due to the damage to certain nerves during the fracture process, resulting in abnormal contraction spasms in the muscles innervated by these nerves. 3. It may be due to the fracture, which brings certain stimuli to the patient psychologically and physiologically, resulting in certain 4. It is possible that during the recovery process of fracture, the blood calcium decreases or the patient has an underlying disease of osteoporosis, which may cause cramps, and at this time you can take calcium tablets to relieve the symptoms. If the cramps are very frequent, it is recommended to inform the attending physician in time to clarify the cause of the cramps and then do targeted treatment.