Wireless Ankle Rehabilitation for Post Stroke Recovery based on Calf Muscle Strength

In this paper, wireless ankle rehabilitation for post-stroke recovery based on calf muscle stress is newly proposed. All the functions and performance of the proposed wireless ankle rehabilitation for post-stroke recovery based on calf muscle strength are successfully tested and proven through measurements. The angular velocity of DC motor for ankle rehabilitation device depends on the pulse width modulation (PWM) value. The PWM signal for muscle scale 1, 2, and 3 is 50 or 19% of duty cycle value otherwise, use 100 of PWM signal value for scale 4 and 5 or 39% of a duty cycle. The muscle strength of healthy people is above 11kPa that equivalent to scale 5, whereas people who are paralyzed have muscle strength below 9.5kPa that equivalent to below scale 3. The average of increasing muscle strength after four days of therapy is 0.15kPa. This value doesn't have related to clinical therapy result because the increasing of muscle strength depend on the patient condition. The proposed method is effective for an individual and a therapist who can determine and evaluate the patient muscle strength. This ankle rehabilitation system is a robust system, user-friendly and safe to use. The Android application makes easier to operate the device and read the data results. This system is suitable for post-stroke recovery for hemiplegic in the leg.