ProductComposition: Composed of thermoplastic sheet, elastic textile fabric and velcro etc. Performance: 1. The unique flexion and extension adjustment belt can effectively adjust the flexion and extension angle of the ankle joint; 2. The hard shell conforming to the physiological curvature of the ankle joint makes the patient more comfortable to wear; 3. Universal design. Scope of application: 1. Prevention of foot sagging in bed for a long time; 2. External fixation of plantar fasciitis and Achilles tendinitis; 3. External fixation protection for heel pain. Instructions: 1. It should be used under the guidance of a physician; 2. Select products with appropriate specifications based on patient foot data; 3. Open all straps and place the product on the patient's ankle; 4. First fix the forefoot strap, adjust the position of the splint to fit the instep; fix the calf strap and the middle strap in sequence; 5. Adjust the ankle joint to the proper angle by adjusting the flexion and extension adjustment belt; 6. Adjust the product tightness until the product is moderately tight.