his product is a high-precision calculator for the processing of joints, maintaining a high technical content and accuracy. Special multi-axis connecting rod design makes the joint more stable and comfortable. Independent pneumatic swing period control system, can be independently buckling and stretching adjustment. The 38 ° load-bearing self-locking device means that the knee joint can be load-bearing locked without bending within 38 °, allowing the user to have a higher safety and stability factor when walking or standing. The design of high steel extensible elasticity increases joint movement smoothness and safety. 150 O. Knee knee angle to increase maximum activity demand.