Aim. A neurobehavioral test for workers exposed to organic solvents in the workplace can be affected by many factors : age, education, motivation, ethnicity, etc. To apply more suitable neurobehavioral test for Korean workers, we evaluated the validity of several items of computerized and traditional neurobehavioral tests. Methods. We have applied eleven tests : four items of computerized neurobehavioral test(Swedish Performance Evaluation System) including Addition, Symbol-Digit, Digit Span, and Finger tapping speed, and seven items of traditional neurobehavioral test consisting of Addition, Digit-Symbol , Digit Span, Benton visual retention test, Pursuit aiming, Pegboard, and Tapping. These tests were performed on 96 workers exposed to solvents, and 100 reference workers. The concurrent and construct validities were evaluated by group difference, correlation with age, educational level, hippuric acid level, neurotoxic symptom, current exposure level, multitrait-multimethod matrix, factor analysis, and discriminant analysis. Results. Statistically significant differences were observed between the workers exposed to solvents and referents in computerized Symbol-Digit, Finger tapping speed, traditional Digit-Symbol and Pegboard. The computerized Symbol-Digit, traditional Digit-Symbol, Addition, Benton visual retention test, and Pegboard were found to be related to the age. The performance of computerized Symbol-Digit, Addition, and traditional Digit-Symbol were found to be related to the educational level significantly. The computerized Symbol-Digit, Finger tapping speed, and traditional Digit-Symbol were found to be related to hippuric acid, and neurotoxic symptom. The discriminability of Finger tapping speed, and Pegboard was better than the other tests. In discriminant analysis, the model with two variables, the computerized Symbol-Digit and Pegboard, classified almost 70 percent of the workers correctly. Conclusions. These results suggest that the computerized Symbol-Digit, Finger tapping speed, and Pegboard are more satisfactory for our purpose, and the Addition, Tapping, Benton visual retention test, and Pursuit aiming are less valid than other items. These may allow the reasonable selection of core neurobehavioral tests for workers exposed to solvents in Korea.
Education ; Fingers ; Korea ; Motivation ; Solvents

PURPOSE: This study was conducted to assess reported industrial accidents and non-reported industrial accidents that took place in 63 small and medium sized manufacturing industries located in Daegu and Gyeongsangbuk-do in the year of 2009. METHODS: During the period from January to December 2009, the number of industrial accidents that happened each month was examined according to the characteristics of industry, industrial accidents, workers with industrial accidents, treatment, as well as causes and treatment of the non-reported. RESULTS: The total incidence rate of industrial accidents was 3.48%, of which only 0.31% reported. The incidence rate in packing and distribution among manufacturing workplace, and in the industry with 50~99 employees, was higher than the other groups. Of the non-reported, over 80% in required under 10 days of medical treatment, and 56% in required cost of less than 100,000 won. Kappa values were 0.771 concurrence in opinions for causes of non-reported, and 0.571 concurrence in opinions for management termination of non-reported between the employees and employer. CONCLUSION: It is suggested that more supportive policy and precise, nationwide survey on the actual state of industrial accidents, including non-reported cases, be implemented to efficiently manage industrial accidents.
Accidents, Occupational ; Hypogonadism ; Incidence ; Mitochondrial Diseases ; Ophthalmoplegia

There are many procedures for the treatment of acromioclavicular separation but there are still controversies concerning the best management of these injuries. The cases of 20 acromioclavicular separations and 3 distal end fractures of clavicle were treated by conservative method with modified Kenny Howard sling-halter using long arm cast at the department of Orthopedic Surgery, College of medicine,Ewha Womans University, during the thirty six months period from March 1982 to February 1985. The following results were obtained. 1. The average duration of immobilization was 5 weeks at the grade II of acromioclavicular separation and fracture of distal end of clavicle and 6 weeks at the grade III of acromioclavicular separation. 2. The functional results were 17 excellents(73.8%), 5 goods(21.9%), and 1 fair(4.3%). 3. The complications were 3 frozen shoulders(13.0%), 2 subluxations(8.6%), and 1 skin necrosis on the elbow(4.3%). 4. The authors immobilized the upper extremity with long arm cylinder cast of 90° flexion position instead of initial harness, so that it was applied easily and the patient felt very comfortable. 5. When the fracture and severe displacement were occurred at the midthird of the clavicle, it could be reduced and maintained with the long arm cylinder cast and strap.
Arm ; Clavicle ; Female ; Humans ; Immobilization ; Methods ; Necrosis ; Orthopedics ; Skin ; Upper Extremity

Bone tumor in the trochanteric area is not infrequent and it is important to differentiate the tumors in this area for diagnosis, early settings of therapeutic plans and prognostic previsions. Twenty-one cases of benign bone tumors in the trochanteric area treated at Dept. of Orthopedi Surgery, College of Medicine, Ewha Womans University Hospital, from January 1975 to December 1983 were analysed and following results were obtained. l. of 21 cases, 10 cases were fibrous dysplasia, 6 cases were simple bone cyst, 3 were giant ce tumor and 2 were aneurysmal bone cyst. 2. Pathologic fractures were accompanied in 6 cases; 3 of fibrous dysplasia, 2 of simple bone cy: and 1 of aneurysmal bone cyst. 3. After treatment with curettage, bone graft and instrumentation, 3 cases recurred; 2 cases of fibrous dysplasia and 1 of simple bone cyst. 4. As prognostic factors, completeness of curettage, amount and source of bone graft were considered to be important.
Aneurysm ; Bone Cysts ; Clinical Study ; Curettage ; Early Diagnosis ; Female ; Femur ; Fractures, Spontaneous ; Humans ; Transplants

No abstract available.
DNA, Recombinant* ; Hepatitis B Vaccines* ; Hepatitis B* ; Hepatitis* ; Yeasts*

Optic pits are congenital craterlike holes or indentation in the surface of the optic disc. They are oval in shape and located in the inferior temporal quadrant of the optic disc. The authors experienced a case of congenital optic pit of the left eye of 18 year old male-patient. Fluorescein angiography showed hypofluorescence of the pit in early arteriovenous phase, becomming hyperfluorescence in the late phase. Ophthalmoscopic view of the diseased eye showed no abnormality of macular area. There was no visual field defect except the enlarged physiologic blind spot. Here we briefly report a case of congenital optic pit. referring the literature relating to the optic pit.
Adolescent ; Fluorescein Angiography ; Humans ; Optic Disk ; Visual Fields

No abstract available.
Fibronectins* ; Granulation Tissue* ; Wound Healing* ; Wounds and Injuries*

The implant prosthesis can be divided into the screw retained prosthesis and cement retained prosthesis. Each type has advantages as well as disadvantages which is unfavorable to maintain the implants. To overcome these drawbacks, T-screw system was developed. T-screw system which utilizes a lingual direction of the screw to retain the implant prosthesis, has advantages of retrievability of the prosthesis, passive fit, and possibility to form esthetic and functional occlusal surface. The prior prosthesis which utilized horizontal screws had difficulty in fabrication especially in the case of multiple units, and also limited use with all-ceramic prosthesis. In this case, fabricating the implant prosthesis by using the T-screw system showed superior results in easy maintenance, esthetics, and also functions. In addition, we are to report the method of using the T-screw system in implant prosthesis, such as multiple units of implant prosthesis and all ceramic prosthesis.
Ceramics ; Dental Implants ; Dental Prosthesis* ; Dental Prosthesis, Implant-Supported ; Dental Restoration Failure ; Dental Restoration Repair ; Esthetics ; Methods ; Peri-Implantitis ; Prostheses and Implants

PURPOSE: This study was designed to evaluate diagnostic accuracy of serial electrocardiograms(ECG), myocardial band of creatinine phosphokinase(CK)(CK-MB/CK ratio) and two dimensional echocardiography(ECHO) for myocardial injury in patients with blunt chest trauma. METHODS: We prospectively investigated 54 patients(male : 38, female : 16, mean age : 41) with severe blunt chest trauma. Presence of myocardial injury was determined by increase(>0.1ug/L) of peak serum troponin T(TnT) concentration from serial mesurements. RESULTS: Among 54 patients with blunt chest trauma, 23 patients(43%) had increased peak TnT level which suggested of myocardial injury. Among 23 patients with increased TnT, abnormal ECG findings were found in 18(78%) and echocardiographic abnormalities were observed in 17(74%). Cardiovascular events in 9(39%) of 23 patients with increase Tnt. There was no cardiovascular events in patients with normal TnT. CONCLUSION: Significant proprotion of patients with blunt chest trauma had elevated TnT value which suggested of myocardial injury. We recommend echocardiagraphy and serial tracing of ECG to verify the clinical significance of elevated TnT in patients with blunt chest trauma.
Creatinine ; Diagnosis* ; Echocardiography ; Electrocardiography ; Female ; Humans ; Prospective Studies ; Thorax* ; Trinitrotoluene ; Troponin ; Troponin T

In infected uncemented hip arthroplasty, 4 cases which showed well-fixed femoral stem were managed by staged procedure. Thorough debridement, removal of acetabular socket and insertion of antibiotics impregnated cement spacer was done without removal of femoral stem. No recurrence of infection or loosening was developed after staged procedure and revisoin was performed after infection evidence disappeared. The interval between the two procedures was 4 months (3-6) on average. In Weber's criteria, all 4 cases were graded as having definitive cure of infection on both clinical and radiological criteria (Grade I) .
Acetabulum ; Anti-Bacterial Agents ; Arthroplasty ; Arthroplasty, Replacement, Hip* ; Debridement ; Hip ; Recurrence