This relates to an armrest device designed for secondary shoulder joint abduction, more specifically, the shoulder joint and stably fixed without movement and to perform recovery movement, the shoulder joint also relates to a patient with one hand and shoulder abduction joint for the second armrest device for convenient and easy to install and use. In the armrest device for the shoulder joint abduction assistance according to the designed device is in the armrest for the shoulder joint abduction assistant, seated in the body of the waist by a sash member, which is fixed armrests And the first arm seat portion arm is inserted between the hand part from the elbow, the arm between the shoulder and the arm mounted rotatably coupled second part is inserted from the elbow, while not hanging sash member in the arm-rest armed guards seated Protector binder means provided on one side and the other side of the armed guards And the binder comprises a cradle means are mounted to the armrest so that the guard means is attached or leaving the binder, wherein the binder guard means including a first engagement means formed on the supporter of the first arm receiving portions, the second arm receiving portions and a second engagement means formed on the guard and the pedestal engagement means including a first bracket to the distal end portion side of the binder means that the arm-rest that corresponds to the tip end portion of the first binder is a binder protector means, the second After the rest of the arm so that the guard is separate binder means a binder with a second engagement means provided on the pedestal side end portion spaced apart, characterized in that disposed. According to this, the shoulder joint to be united when the second guard binding means and the second bracket fixed to one another engagement means to prevent movement of the shoulder joint and the first guard with the first engagement means thereby releasing the bound state of rest binder means As can be sta
