1) Statistics of electrotherapies in Japan (1961-1966): Questionnaires concerning on clinical application of low frequency electrotherapy were sent to 142 big clinics in all over the Japan. Answers were obtained from 70 clinics. The total number of the cases was 8973 who were treated for past five years.
It is clarified from the analysis of this questionnaires and answers that low frequency electrotherapy have been applyed in many clinics by following the basis of neuro-physiological principles and some improvements were noticed on 56.4% of 8858 cases.
2) Statistics of electrotherapy in our clinic during past five years:
The principle in the treatment of the nervous system in our clinic were as follows;
a) The diseases in the muscle and peripheral nerve fibers: They will be treated by the third effect of polarization.
b) The disease in neuro-muscular junction: It will be treated by the post-tetanic potentiation on neuro-muscular junction.
c) The disease in the spinal synapses:
It will be treated by two theoretical bases; firstly post-tetanic potentiation on spinal mono-synaptic reflex and secondly the third effect of spinal polarization on the reflex action.
3) Therapeutic application of low frequency current on progressive muscular dystrophy:
Recent advancement in electrotherapy on progressive muscular dystrophy in our clinic was reported in the view point of electromyography and biochemistry. The best result was gained by the administration of post-tetanic potentiation on the spinal mono-synaptic pathway.
4) Several problems in future:
The size and shape of electrode, wave-form, amplitude modulation, frequency modulation, telemetry, mechanical vibration, electrical narcosis, and heart and bladder stimulation with pace maker and so on were discussed.

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Last ten years, functional artificial arms have been improved very much in the world, however, they have many difficulties for practical use.
Electronic below-elbow prosthesis consists of control signal, transducer, amplifier, motor, battery, socket part, and terminal device.
Attempts have been made to examine the muscle strain with a strain gauge in finger flexors and extensors of the forearm for electronic below-elbow prosthesis; two trial devices (Type III and IV).
The control signal of Type III changes muscle strain into air-pressure, which is then changed into electric resistance by using a pressure gauge of carbonmembrane.
The movement of the terminal device consists of flexion and extension of the metacarpophalangeal joints of the thumb, index and middle finger, using a micromotor powered by a rechargeable nickel-cadmium battery.
The socket part made of plastic and double, be able to get supination and pronation of forearm.
Type IV is an improved prosthesis compared to Type III, particularly in control signal for short stump and weakness of muscle strength of forearm.
The control signal of Type IV changes the movement of chest into air-pressure or slide of two plate, which is then changed into electric resistance by a pressure gauge of carbonmembrane.
The below-elbow amputees have used in the experiment with Type III and IV.

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The most important and difficult problems of rehabilitation after discharge from hospital are the preparing of the paraplegia for housing and employment.
The usual wheel chair is convenient to the patient who live in the European-style house, but not to the patient who live in the Japanese-style house.
According to the result of investigation for the daily living of paraplegics who had been discharged from hospital, almost all of them want to live in the European-style house, but as things are, economic condition does not permit this requirement. For these patients, the means of moving in the Japanese-style house is crawling and this has imposed a heavy burden on their family.
To solve this difficult problem, a wheel chair which is convenient to live in the Japanese-style house was devised. This wheel chair has smaller wheels, convenient to live in, harmonized with Japanese-room, and has been well received by the patients. On this condition, only places which should be reformed in Japanese-house will be toilet and bath rooms. And a patient who has gained independence from hospital, became self-reliant, will be able to return home more easily, making use of this new wheel chair. Details about improvement of toilet and bath arrangement in the Japanese house for the patients in the wheel chair, was also discussed.

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1) Anti-Decubitor and Gent-L-Pulse are very effective in preventing decubitus, especially in case of patients who can not change their postures.
2) A rapid recovery of decubitus, which has already been inflicted, can be made by the use of this device, compared with the recovery without the aid of this. Moreover edema and fibrosis of the surrounding tissue of decubitus are very rare, and decubitus-plasty of rotation flap method is practicable.
3) Its constant use does not disturb sleep, as there is almost no vibration noise in the motor of the pump. But, the use of this bed above the shoulder is uncomfortable, so the use below the shoulder is desirable. The pillow-pad as illustrated in the fig. 6 is suitable for the part treatment, as in the back, the waist and the leg.
4) It can be widely applied in case of not only a spinal damage but a fracture of the old people, which is often in danger of producing decubitus.

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