A knee joint rehabilitation apparatus including an electromyogram measuring sensor and a method of operating the same are disclosed. The knee joint rehabilitation apparatus 100 according to an embodiment of the present invention is a knee joint rehabilitation apparatus 100 for rehabilitating a knee joint of a subject by wearing a part of a leg including a knee of a subject, An upper support 110 of a structure that is mounted in the form of wrapping at least a part of the thigh 11 of the upper support 110 A lower support 120 of a structure that is mounted in the form of wrapping at least a portion of the lower leg 12 of the subject An electromyogram measuring sensor 130 mounted on the upper supporter 110 or the lower supporter 120 for measuring electromyograms of the thighs 11 or the lower thighs 12 of the subject and transmitting the detected electromyogram data to the controller An electric stimulation device 140 mounted on the upper support 110 or the lower support 120 for providing electrical stimulation to the muscles of the thighs 11 or the lower legs 12 of the subject And a control unit 150 mounted on the upper supporter 110 or the lower supporter 120 and controlling the electric stimulation apparatus 140 based on the EMG data detected through the EMG sensor 130 It is the point of composition.According to the present invention, it is possible to provide a knee joint rehabilitation apparatus capable of remarkably improving the efficiency of muscle strengthening by performing optimal electrical stimulation during the initial acute phase in the rehabilitation phase.근전도 측정센서를 포함하는 무릎관절 재활장치 및 이를 운용하는 방법이 개시된다. 본 발명의 실시예에 따른 무릎관절 재활장치(100)는, 대상환자의 무릎을 포함하는 다리 일부를 감싸는 형태로 착용하여 대상환자의 무릎관절 재활을 위한 무릎관절 재활장치(100)로서, 대상환자의 대퇴부(thigh, 11)의 적어도 일부를 감싸는 형태로 장착되는 구조의 상부지지대(110) 대상환자의 하퇴부(lower leg, 12)의 적어도 일부를 감싸는 형태로 장착되는 구조의 하부지지대(120) 상기 상부지지대(110) 또는 하부지지대(120)에 장착되어 대상환자의 대퇴부(11) 또는 하퇴부(12)의 근전도를 측정하여 검출된 근전도 데이터를 제어부에 송신하는 근전도 측정센서(130) 상기 상부지지대(110) 또는 하부지지대(120)에 장
