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악관절 후방부착부에 있어서 MRI 신호변화에 대한 고찰
정주성,허원실,정훈,Jung, Joo-Sung,Huh, Won-Shil,Chung, Hoon 대한악안면성형재건외과학회 1997 Maxillofacial Plastic Reconstructive Surgery Vol.19 No.1
Magnetic resonance imaging has been used in the temporomandibular joint(TMJ) primarily to define morphology and positional relationship of associating structures. This report examines signal intensity characteristics of the posterior attachment as they related to the severity of internal derangement. Fifty six joints in 35 patients with a history of TMJ dysfunction were imaged writ MR using $T_1$-weighted spin echo sequence. According to disk position, ability to reduction, and the presence of osteoarthritis, the joints were categorized into three groups. A group 1 was anterior disk displacement with reduction; a group 2 was anterior disk displacement without reduction; a group 3 was anterior disk displacement without reduction and condyle had osteoarthritic change. The control group was determined by the clinical absence of any signs or symptoms of current or past TMJ pain and dysfunction. Calculated the relative value of MR signal intensity in posterior attachment and disk to cerebral cortex of temporal lobe by means of computer program, we have compared them with each groups. The result showed statistically little significant difference of disk signal intensity among each groups. but, signal intensity from posterior attachment in group 2 and 3 were significantly(p<0.05) decreased than control group. this might reflect an fibrosis or hyalinization of posterior attachment, which was part of remodeling process that occurs in disk displacement without reduction. However, this study could not demonstrate histologic confirmation of the decreased signal intensity in the posterior attachment. So, further investigation could be needed to understand the association between them.
신동석(Dong Seok Shin),정병용(Byung Yong Jeong),정주성(Joo Sung Jung),박명환(Myoung Hwan Park) 대한인간공학회 2019 大韓人間工學會誌 Vol.38 No.5
Objective: This research aims to analyze the occupational deaths and violation of the Korean taxi drivers and to find out the effect of factors for recommendations on injury prevention. Background: Although there are many studies on traffic accidents, there are few studies on taxis, which are the main means of transportation. Moreover, There is little research on the industrial accidents of taxi drivers. Method: The data of 586 taxi drivers approved as industrial accidents compensation of years 2015 and 2016 were analyzed. Significant variables explaining deaths and violation were identified by binary logistic regression. Results: Drivers aged 65 or older are more likely to die from accidents than those under 65 (OR (odds ratio): 1.85, p =0.048). In addition, violations were more likely to lead to death than no-violation (OR: 1.94, p =0.046). Facial injuries were more likely to lead to death (OR: 2.38, p =0.003) and encephalorrhagia injuries were more likely to lead to death (OR: 3.82, p <0.001). Conclusion: In order to prevent accidents of the elderly drivers, it is necessary to reinforce safety education and to manage the driving license renewal cycles according to the ages. In addition, a system for integrated management of taxi transportation should be established to improve the working environment of older taxi drivers. Systematic approach is necessary to alert taxi drivers to the fatal consequences of traffic violations and to make them to comply with the traffic rules. Application: The effects of the significant variables on deaths and violations can be used as a guideline to develop systematic measures for prevention of accidents for the taxi drivers.