Surgical treatment is available for cases where the elbow cannot be straightened. However, surgical treatment is the ultimate treatment for this condition and should not be performed as a last resort. Most cases of limited elbow extension are due to old injuries to the elbow joint and the lack of adequate functional exercise during the recovery process, which leads to limited elbow movement. Therefore, one of the first and preferred measures for such patients is functional exercise. The straightening of the elbow joint may be painful at this time, but the patient should try to exercise as much as possible as long as the doctor confirms that it is safe to do so. The best restoration of elbow joint function is achieved through this exercise, and it lasts longer. If the patient is unable to tolerate the pain, he or she can ask the doctor to prescribe anti-inflammatory and pain-relieving medication to relieve the pain and then continue the exercise. Of course, in some particularly severe cases or in cases where the patient is still unable to recover after thorough exercise, surgical release of the elbow deformity or appropriate osteotomy is required.