• Maxillofacial Plastic and Reconstructive Surgery
• /
• v.13 no.2
• /
• pp.185-190
• /
• 1991

Thr rickets or osteomalacia, that was induced by nonendocrine osseous or soft tissue tumor, is extremely rare disease and fourteen patients has been reported since 1947. The real nature of this disease is unknown, but postulated that unknown phosphaturic subtance which was elaborated from the tumor affect the renal tubule and produce hypophosphatemia and failure of calcification of osseous tissue. This case presented is that of 41-year-old man who suffered from severe generalized aching pain, severe muscular dystrophy, and shortening of the stature 4 years prior hospitalization. The causal coexisting tumor is walnut sized peripheral giant cell granuloma on the upper gingiva. After surgical removal of the tumor, patient's biochemical findings of the serum and urine were returned to the normal limits 12 days later, and clinical symptoms were marked relieved at 6 weeks later. The dental radiograms which were obtained 4 months later revealed remarkable bone regeneration and newly formed alveolar lamina dura.

• Korean Journal of Health Education and Promotion
• /
• v.12 no.1
• /
• pp.111-127
• /
• 1995

This study was designed to investigate the relationships between children's physical growth and health and their raising conditions and to find out the important conditions to improve their physical growth and health. The rasing conditions were classified into three major parts; i. e., family conditions, conditions of nutrition up-taking, and conditions of rest or sleep and exercise or play. Then, the questionnaire including the items to survey these three areas of raising condition and the items to evaluate the health status were given to children' mothers or fathers and filled up by them. The data of their 4 anthropometric measures; body weight, stature, sitting height and chest girth, were also collected from their latest records of health examination. The data of health status were converted to health scores representing 6 domains of health; digestive organs, respiratory organs, auto-nerve systems, fatigue, others and health as a whole. Then, correlations of raising conditions were determined with four antropometric measures and 6 health scores as criterion variables. Then, number of families to live together, and child's birth order in the domain of family conditions, habits of unbalanced diet, eating frequency of eggs, fruits, green and yellow vegetables, light colored vegetables, milk products in the domain of nutrition up-take, and the time for study at home, the place for play, the number of friends to play with together, the hours for playing out of door, the hours for playing sports, and the hours to move their body for assisting house keeping were picked out to investigate their relationships with physical growth and health status. Then, their habits of unbalanced diet and eating frequency of eggs, green or yellow colored vegetables, and milk products were found more influential conditions and more over, birth order, the time for study at home, the time to play out of door showed moderate degree of connection with physical growth and health status in early childhood.

• Journal of The Korean Digital Architecture Interior Association
• /
• v.9 no.2
• /
• pp.5-16
• /
• 2009

The importance of playground, which is a central place in the outdoor space scheme for apartment and in children's outdoor activity, is increasing. The stature and availability in playground may be varied according to connection between playground and outdoor space and to characteristics of outdoor space. The purpose of this study is to arrange basic data in guidelines of a planning for supporting children's development and for activating its use in the apartment housing. This study conducted the field survey and questionnaire research after selecting 4-case apartment complexes based on the relevant preceding research. The survey results are as follows. Children were recognizing and preferring the playground as the central space in outdoor play activity. Mothers were preferring outdoor space adjacent to playground. There were the most responses with saying that a mother takes to play with a child. Children responded that the use of playground and the rides are the outdoor activity that they do the most. And, it was surveyed that there is difference in dweller's using playground by apartment complex according to characteristics of a planning for outdoor space. Given being connected with square with segregation of pedestrian and vehicle and with the resting space, the availability in playground was the highest. The availability in playground, which has high connection with diversely outdoor space elements while having good accessibility to the apartment building, was surveyed to be high. Playground had high preference in case of being connected with waterfront and resting space, rather than green zone. Diverse environmental artifacts and decorative fence may become a visually stimulus source that can activate the use of playground.

• Journal of the Ergonomics Society of Korea
• /
• v.9 no.2
• /
• pp.55-63
• /
• 1990

School children sit long on chairs in their classrom. Their posture is closely related to their chairs. Study of this relationship is very imporant for the health and education of school children. This report presents the results of study condcuted to determine the present status of classroom chairs and solve any problems identifede. The study involved 125 teachers in Seoul and Pusan, 175 fourth graders in Seoul, and 109 fourth graders in Puasn. The body dimensions of the school children and the dimensions of their chairs and desks were measured, and their postures while they studied at their desk were photographed. The following problems were identified as a result of the investigation: (1) Chairs are allocated to pupils according to their stature. (2) The teachers are not satisfied with the chairs and the method by which the chairs are allocated to their pupils. (3) The pupils complain of low seat height, narrow seat, and hard backrest, among other conditions. (4) The pupils select a chair one size larger than that suggested by their body size. (5) The poor posture of the pupils is traced to the seat height and sasyaku$(sitting height {\times} 1/3-1)$ of their chairs, their habit, their way of holding pencils, and lack of instruction by their teachers. The following recommendations are made to solve these problems: (1) Adjust the seat height and desk height to accommodate the pupils. (2) Provide both teachers and pupils with adequate knowledge of chails. (3) Provided each pupil with one desk and make the desk adjustable to sit his or her body dimensions. (4) Allocate a chair and desk to each pupil for his or her exclusive use. (5) Reserch and develop conversion tables that help to find suitable chails for individual pupils. New values of sasyaku and desk height, not specified in Korean Industrial Standards(KS), are proposed.

• Journal of the Ergonomics Society of Korea
• /
• v.34 no.4
• /
• pp.293-302
• /
• 2015

Objective: This study was performed to investigate the prevalence of musculoskeletal disorders in auto workers of a mission assembly plants. Background: Most studies of musculoskeletal disorders have used car assembly line workers as their participants. However, little research has been done on musculoskeletal disorders afflictions of mission assembly line workers. Method: Through a focus group interview with an ergonomist and a manager at a mission assembly plant site, a questionnaire was developed for musculoskeletal disorders. The questionnaire consisted of five parts, demographic factors, musculoskeletal disorder symptoms, and musculoskeletal disorder experiences; 137 workers participated in this survey. The surveys were analyzed by correlation and Chi-squared analysis. Results: Musculoskeletal disorder symptoms and serious pain were reported in the neck, shoulder, back, and fingers. These problems were statistically related to various demographic factors, such as age, stature, stretching, and work satisfaction. Conclusion: Treatment of musculoskeletal disorders should consider the workers' traits. If there is no specific cause of the pain, developing stretches and exercises before and after work should be applied to prevent musculoskeletal disorders. Application: The results of this study can be used to develop guidelines to prevent injury in auto workers at mission assembly plants.

• Journal of the Ergonomics Society of Korea
• /
• v.29 no.3
• /
• pp.383-391
• /
• 2010

The present study evaluated a preliminary control room (CR) design of radioactive waste facility using the $JACK^{(R)}$ human simulation system. Four digital humanoids ($5^{th}$, $50^{th}$, $95^{th}$, and $99^{th}$ percentiles) were used in the ergonomic evaluation. The first three were selected to represent 90% of the target population (Korean males aged 20 to 50 years) and the last to reflect the secular trend of stature for next 20 years in South Korea. The preliminary CR design was assessed by checking its compliance to ergonomic guidelines specified in NUREG-0700 and conducting an in-depth ergonomic analysis with a digital prototype of the CR design and the digital humanoids in terms of postural comfort, reachability, visibility, and clearance. For identified design problems, proper design changes and their validities were examined using JACK. A revised CR design suggested in the present study would contribute to effective and safe operations of the CR as well as operators' health in the workplace.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
• /
• v.33 no.6
• /
• pp.681-683
• /
• 2007

Kabuki(Niikawa-Kuroki) syndrome was first reported by Niikawa et al(1981). The faces of the patients are similar to the make-up of traditional Japanese Kabuki actors: long palpebral fissures, an ectropium of the lateral third of the eyelids, and arching eyebrows with sparse lateral halves. Craniofacial findings include a depressed nasal tip, short nasal septum, large and prominent ears, and micrognathia. Other main features area mild to moderate mental deficiency, short stature, skeletal and dermatoglyphic abnormalities, including prominent finger tip pads. Oral anomalies are common in KS(over 60%) and include abnormal dentition, widely spaced teeth, cleft palate or lip, high vault of palate, hypodontia, conical incisors, screw driver-shaped incisors and ectopic upper 6-year molars. The increased occurrence of cleft lip and palate or the development of a high vault of palate has been described by a number of authors. This condition is believed to be common in Japan, but has been reported from other parts of the world. The objective of this presentation is to report a case of this syndrome in six-year-old girl, with characteristic findings.

• Clinical and Experimental Pediatrics
• /
• v.45 no.9
• /
• pp.1141-1145
• /
• 2002

Klinefelter syndrome is the most common chromosomal abnormality, with a 47, XXY karyotype and typical clinical findings of infertility, hypogonadism, reduced body hair, gynecomastia, tall stature, and incresed gonadotropins and decreased testosterone levels. In addition to this classic description, several other diseases have been discribed in Klinefelter syndrome such as unilateral renal aplasia, autoimmune disease, diabetes mellitus, sexual precoxity, renal cell carcinoma, intravesical ureterocele, and osteoporosis. The incidence is 1 in 400-1,000 of the population and urological abnormalities are not common. However a case of Klinefelter syndrome associated with multicystic dysplastic kidney has not been not reported up to date. Therefore, we describe a 1-day-year old baby boy who presented with Klinefelter syndrome with unilateral multicystic kidney dysplastic disease, plus with a brief review of the literature.

• Journal of Genetic Medicine
• /
• v.6 no.1
• /
• pp.91-94
• /
• 2009

Werner syndrome (WRN), or adult progeria, is a very rare, autosomal recessive disorder characterized by the appearance of accelerated aging, including cataracts, gray hair, skin atrophy, and atherosclerosis. This syndrome is caused by mutations in the WRN gene and had a high risk of a spectrum of rare neoplasms including: i) non-epithelial malignant or pre-malignant tumors/conditions, osteosarcomas and soft tissue sarcomas, malignant melanomas, myeloid leukemia and myelodysplastic syndrome; ii) an epithelial neoplasm, thyroid carcinoma, and iii) meningiomas. Recently, authors experienced a case of Werner syndrome complicated by bone metastasis of rhabdomyosarcoma in a 20-year old Korean man. The patient revealed a painful mass on his right knee and progeroid features, short stature, scalp alopecia, abnormal dentition, craniofacial disproportion, hypothyroidsm, cataracts and osteoporosis. The onset of symptoms of Werner syndrome generally precedes any later symptoms of associated conditions, such as malignant tumor. Therefore, early recognition of Werner syndrome is important to assist identification of malignant tumors at an early stage in this patient group.

• Journal of the Ergonomics Society of Korea
• /
• v.31 no.3
• /
• pp.437-444
• /
• 2012

The purpose of this study was to suggest appropriate human model for ergonomic evaluation considering working postures on 3D space. Background: Traditionally extreme design rules have been widely utilized at the stage of designing products. Body size of 5th percentile and 95th percentile in stature has been generally selected for controllability and clearance evaluation, respectively. However, these rules had limitations in reflecting working posture in ergonomic evaluation. Method: In order to define working posture on 3D space, not only sagittal plane but also lateral plane was considered. Kinematic linkage body model was utilized for representation of working posture. By utilizing the anthropometric data of 2,836 South Korean male populations, the point cloud for end points of linkage models was derived. The individuals who were lacking in certain controllability were selected as human models for the evaluation. Result: In case of standing posture it was found that conventional approach is proper for all controllability evaluations. Contrary to standing posture, tall people had less controllability on control location below shoulder point in sitting posture. Conclusion: From the derived proper range on controllability, ergonomic evaluation rule was suggested according to working posture especially in standing and sitting. Application: The results of the study are expected to aid in selection of appropriate human model for ergonomic evaluation and to improve the usability of products and work space.