If the ankle fracture is just 4 weeks old it is recommended not to go on rehab too early and weight bearing needs to be avoided. If the symptoms of redness, swelling, heat and pain have greatly reduced, you may choose to lie in bed and perform gentle activities. Try not to put your foot in a low position, put your foot up at night when you sleep, fix your waist and abdomen, and lift your leg for aerial pedaling bicycle movements. Specifically, the ankle joint is hooked upward with force, insist for a few seconds, and then pedal downward with force, insist for a few seconds, to exercise the range of motion of the ankle joint in groups of 10-20 times. You can judge whether the range of motion of the ankle joint is less than 90 degrees or more than 90 degrees by judging whether the up and down movement of the ankle joint has improved.