Instructions: 1. The fixing strap at the upper end of the adjustable knee orthosis is fixed at the thigh above the knee joint. Fix the calf strap at the lower end of the knee orthosis to the calf. 2. After fixing the thigh strap and the calf strap, connect the adjustable knee joint hinge with the thigh strap and the calf strap. 3. Fix the hook and loop fastener through the plastic ring and the fixing straps at both ends. 4. Adjust the scale of the dial to the appropriate angle. Specification: Material: Rigid aluminum alloy support strip&silicone; Weight: about 680g / 23.99oz Size: S, M, L(optional) ?Attributes Size: S Thigh Circumference: 39-45cm Calf Circumference: 32-39cm ?Attributes Size: M Thigh Circumference: 45-51cm Calf Circumference: 39-46cm ?Attributes Size: L Thigh Circumference: 51-59cm Calf Circumference: 46-52cm Measurement methods: Above the keen 15CM and below the keen 12CM measurement. Warm tips: Please measure your leg size carefully and make sure to buy the right size so that this adjustable hinged knee brace can be worn firmly on your leg. If the size is large, it may not be easy to wear tightly. Scope of application: 1. Meniscus injury. 2. Knee joint ligament sprain. 3. Acute soft tissue damage. 4. Anterior and posterior cruciate ligament injury. 5. Knee collateral ligament injury. 6.Knee joint Stretch.