Right foot knee fracture with two nails a month after the right foot can not lift at all may be due to postoperative complications, intraoperative damage to nerves, tendons and other reasons. Patients after fracture surgery are prone to postoperative complications such as muscle atrophy and joint stiffness due to the need for prolonged braking and immobilization. After muscle atrophy, muscle strength will decrease, resulting in weak muscle contraction; joint stiffness will result in decreased joint mobility and adhesion of soft tissues around the joints, increasing the resistance to joint movement. All of these postoperative complications can lead to a situation where the right foot cannot be lifted. In addition, if the nerves, muscles and other tissues are mistakenly injured during the operation, the inability to lift the right foot after the operation may also occur. For example, injuries to the common peroneal nerve, tibial nerve, gastrocnemius muscle, popliteal muscle, etc. Injuries to these areas may result in dorsiflexion weakness of the thumb and ankle, or even foot drop. The injury is not necessarily a break, but can also be caused by excessive intraoperative stretching and irritation. If the weakness of the right foot is not relieved, or accompanied by other symptoms, you should go to the hospital to see a doctor to clarify the cause and then give targeted treatment.