Provided are a robotic arm and a robot for orthopedics, the robotic arm comprises a position adjusting member (100) having three degrees of freedom and a posture adjusting member (200) having at least two degrees of freedom connected to the position adjusting member (100). The position adjusting member (100) comprises a base member (1), a shoulder member (2), a large arm member (3) and a small arm member (5) connected in turn. The posture regulating member (200) comprises a wrist unit (6) and an instrument mounting seat member (7) connected in turn, and the small arm member (5) is connected to the wrist member (6). The position regulating member (100) and the posture regulating member (200) together constitute a series robot arm having at least five degrees of freedom. Each of the degrees of freedom may be adjusted according to the actual needs so as to meet the demand for the position and posture during an operation. Structures among each parts are compact, small and exquisite, taking up a small space, with light weight, and enhancing the flexibility of the robotic arm and ease of operation.La présente invention concerne un bras robotique et un robot pour orthopédie, le bras robotique comprenant un élément dajustement de position (100) ayant trois degrés de liberté et un élément dajustement de posture (200) ayant au moins deux degrés de liberté raccordé à lélément dajustement de position (100). Lélément dajustement de position (100) comprend un élément de base (1), un élément dépaule (2), un grand élément de bras (3) et un petit élément de bras (5) raccordés successivement. Lélément de régulation de posture (200) comprend une unité de poignet (6) et un élément de siège de montage dinstrument (7) raccordés successivement, et le petit élément de bras (5) est raccordé à lélément de poignet (6). Lélément de régulation de position (100) et lélément de régulation de posture (200) constituent ensemble un bras de robot en série ayant au moins cinq degrés de liberté. Chacun
