Inability to spread the toes may be due to the following reasons: First, it may be caused by the poor muscle strength of the foot or calf, some patients due to a long period of non-exercise or prolonged braking, resulting in the above parts of the muscle strength has become very poor. When these patients try to spread their toes or do some other activities involving the foot, the above situation will occur due to the lack of muscle strength; secondly, it may be caused by bony deformities of the foot, for example, some patients have severe ectropion of the mother toe, which will lead to the mother toe extruding outwardly on the second or third toe, and in severe cases, it will also lead to very narrow gaps between the various toes. When these patients try to do the above movement, it may be very difficult to complete the movement due to the bony deformity; thirdly, it may be caused by neurological lesions, for example, when the patient has peroneal nerve injury, or when the peroneal nerve is jammed, it will cause the related muscle weakness, which leads to the difficulty of completing this movement.