This paper reports a case of osteochondromatosis of the knee joint, we recently experienced, which had as many as 1677 loose bodies in the knee joint.
The patient is twenty-eight year old office lady. She has suffered from the swelling and the pain of her left knee for three years without any exciting cause. Her pain increased at walking. In spite of the various treatment by the practicians, her condition did not improved and at last she visited our hospital.
The diffused swelling, oppressive pain, inflammation and fluctuation were recognized at the suprapateller region of the left knee. The flexion was slightly limited.
X-ray findings; On arthrography, the innumerable dotted shadows were seen at the super pateller lesions of the left knee.
Operative findings; The suprapateller lesions of the left knee and the articular cavity were filled with the loose bodies of the size of the dried boiled rice and the knotted swelling and the congestion were recognized on the surface of the synovial membrane.
The extraction of the loose bodies and the curetting of the synovial membrane were performed.
All of the 1677 extracted loose bodies were the small pieces of the white opaque cartilage which were about the size of the dried boiled rice, whose surface was smooth and as hard as the cartilage.
Pathological and histological findings; All of the loose bodies consist of the mature cartilage cells. The ossification within the cartilage and the formation of the medullary cavity could not be recognized.

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From 1961 through 1967, thirty two patients with congenital muscular torticollis was treated surgically at the Tamatsukuri Orthopedic Hospital.
We examined fifteen cases of the patients, one year or more after the operation.
The results obtained so far may be summerized as follows.
1) All cases have not residual wry neck, but have slight motor disturbance of the neck.
2) Two patients of 19 and 23 years old have had the asymmetry of the face and moderate motor disturbance of the neck. All others had good results.
3) Partial resection on the insertion of the sternocleidnmastoid muscle gives relatively poor results.
4) The asymmetry of the skull and face will correct itself as long as growth is present.

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The present study aimed at investigating functional requirements for information retrieval method to develop integrated information management for nuclear power plant and also aimed at developing a prototype system based on the extracted requirements. Among several requirements for supporting intelligent activities of plant operators, the focus has been set on the support function for effective retrieval from stored database, which is consistent with the cognitive process of operators. The functions of the quick wave form search based on partial similarity and of the data search based on hierarchically defined attributes have been realized with the man-machine interface for practical use. As for the quick wave form search based on partial similarity, the validity of this method has been evaluated through the numerical experiments for searching artificially induced wave form simulating signal anomalies. As for the data search based on hierarchically defined attributes, the validity of the proposed system has been shown through the process of possible user and system interaction for anomaly detection and retrospective analysis when some anomalies arise in terms of frequency characteristics in a specific frequency band.

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The development of integrated digital Instrumentation and Control (I & C) systems for Advanced Pressurized Water Reactor (APWR) and Advanced Boiling Water Reactor (ABWR) have been promoted to meet the requirements for increased reliability, enhanced operability and maintainability. The systems integrate state-of-the-art technologies for man-machine interface, digital plant control and protection, optical multiplexing signal transmission and ergonomics. The systems have been systematically built on the hierarchically distributed architecture. This paper describes the design philosophy and the features of the integrated digital I & C systems for APWR and ABWR, focusing on improved man machine interface and newly developed digital systems for plant control and protection.

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In the present paper the aged are defined for convenience sake as those who are over 60 years old. In the authors' hospital 2, 614 in-patients have undergone the orthopedic functional training, and the aged patients among them are 84 in number (3.2%), 61 cases (73%) of which had fractures. Among fractures in the aged those of the femur predominate, and then come the vertebral and the fibula and tibia fractures. The patients at the age of 65 make up the largest number, and the number of male-patients is twice as large as that of female. As the cause of fractures tumbling predominates, then, falling and blow. After they sustained fractures 23% of the patients retired from their jobs, and 7% changed their jobs. In comparison with the younger patients of fracture the aged patients are naturally slower to develop bony union and consequently the period of plaster fixation, hospitalization, and training is likely to be prolonged. Besides, because of the atrophy of soft tissues during this period the adjacent joints tend to develop contractures easily.
Since the aged are generally lacking in active motivation for the functional recovery return to the society and very prone to accidents, it is of importance to watch them closely during the orthopedic functional training, and to give them a positive psychological support, while taking the above tendencies into consideration. At the same time it is necessary to direct them with sympathy and kindness to continue the functional training by themselves regularly without undue overstrains. This should also be taken into consideration in cases of the aged patients. Besides, the treatment of the aged patients who suffer from complications requires the utmost caution. However, through above mentioned cautious treatment and training it is possible for the aged patients to recover their function to a level as high as that of the ordinary patients, though it must be admitted that the level of recovery of the aged is slightly lower as expected. But the question remains in the case that the knee joint contracture is apt to stay on even after the treatment of lower limb fracture, as in the cases of general fractures.
The questionaire on pain was sent to 37 patients who had undergone the hospital training. Answers were obtained from 77% of them. Generally speaking, among pains numbness predominates, but the incidence of numbness among the aged patients is lower than that among the ordinary patients. And pain occurs most frequently in cold environment and then at the time of fatigue. The cause of pain is the impediment of blood circulation at the affected part. The incidence of pain caused by the impediment of blood circulation is rather high among the aged. And the means of treatment given by the patients are hot spring bath, massage, and hot compress in order. The questionaire indicates that such heat treatments as hot spring bath and others relax muscle tones at the affected part, relieve nervous excitability and improve circulation, and at the sametime, psychologically give them a peaceful rest. The fact acupuncture and moxacautery are resorted to by some patients is considered co be characteristic of the aged.
The questionaire on activities of daily living was sent to 23 patients who had undergone the hospital training (16 of them were judged physically handicapped according to the National Annuity Law), and to 6 patients who had received the indoor training. All these patients suffered from fractures of the lower limb and trunk. It is important to notice that the patients of lower limb fracture comlain-ed mainly of difficulty in walking and kneel sitting. By the examination according to the National Annuity Law quite many patients of fractures are judged physically handicapped, because of their inability to do kneel or crosse legged sitting. in sitting upright or cross legged. This kind of impediment becomes serious for the Japanese who spend their home life on tatami matts.

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