How should a four-year-old child exercise after a thigh fracture?

For a four-year-old child after a thigh fracture, appropriate exercises generally include the following: 1. Gently tapping or massaging the child's leg muscles, which helps improve blood circulation, reduce pain, and strengthen muscle strength. 2. Performing gentle stretches of the arms and leg muscles to help relax muscles and enhance flexibility and suppleness. 3. Elevating the affected limb to help reduce pain and swelling. Parents should closely observe the child’s response during exercise. If the child experiences pain or discomfort, the exercise should be stopped immediately.