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Muscle dystrophy can occur in the body’s organs of human movements such as the legs, thighs, upper arms, palms and fingers of humans so that the sufferer cannot use limbs. Electric wheelchair is not effective for people with muscle dystrophy disabilities, because users have limitations such as defect of the hands. Given these circumstances, this research proposes an electric wheelchair with controlled by electromyography (EMG) which is placed on the arm muscles. This Electric wheelchair use 2-channel electrodes for sampling muscle signal. This research was conducted in Balai Besar Rehabilitasi Sosial Penyandang Disabilitas Fisik (BBRSPDF) Surakarta, Indonesia. The results of the first grip strength testing are less than 35.8 kgf that indicates weakness of the hand grip. The same thing in the second treatment is a weakness in the handle because of n less than 35.8 kgf. The result of robustness test, spherical movement is not robust with a value 0.756 and. 0.000. The result of cylindrical movement is fully robust with a value 0.001 and 0.000. The result of lateral movement is fully robust with a value 0.000 and 0.000. The result of tip movement is fully robust with a value 0.000 and 0.029. The result of hook movement is not robust with a value 0.109 and 0.000.

Cerebral palsy is a type of disability, which is related with movement and posture. Statistical data shows the number of CP in Indonesia from 2010 contributed 0.09 percent of children 24-59 months. Types of CP that are commonly found are Diplegic Cerebral Palsy (DCP) and Hemiplegic Cerebral Palsy (HCP). Percentage of DCP about 30 to 40 percent and HCP about 20 to 30 percent. The physical condition of a DCP has weak hip, so there is no strength to lift the body and physical condition of an HCP has one spastic hand down and swings to exhortation. Rehabilitation for them must be continuing to maximize the walking ability and increase physical mobility. Walker used to improve children’s walking. Nowadays, walker is still too heavy, walker dimensions have not considered the size of anthropometry’s children, and walkers have not accommodated users. Therefore, a walker was designed based on concept of DCP and HCP using TRIZ method. The aim is choosing design that accommodate the needs of children for supporting rehabilitation. The results of products dimension are maximum height 107.3 cm, minimum height 60.0 cm, length of walker 71.7 cm, length of handgrip 10.4 cm, and diameter of hands pad 3.3 cm.

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