This study was planned in order to investigate coal miners' recognition and attitude toward pneumoconiosis, and its relationship with related behavior for prevention of pneumoconiosis. Study object was coal miners in Kangneung area, sampled by multistage random proportional sampling, Sample size was 13% of total coal miners in Kangneung area. The results were divided into three parts: (1) descriptive results presented percent distribution, (2) reclassification of knowledge, experiences, and attitude by factor analysis, (3) prediction of health behavior for prevention of pneumoconiosis by discriminant analysis. Knowledge, experiences, and attitude toward pneumoconiosis were classified into nine factors. Knowledge about pneumoconiosis were broken down to two factors and attitude to four factors, and valence, perceived severity were classified into each one factor. According to demographic, socioeconomic characteristics, and factors of knowledge, experiences, attitude about pneumoconiosis, about 62% of behavior of wearing respiratory protector was correctly discriminated. And by the same methods, about 81% of behavior of hospital visit at respiratory symptoms; cough, sputum, chest pain etc. was discriminated correctly.
Chest Pain ; Coal* ; Cough ; Gangwon-do* ; Health Behavior ; Pneumoconiosis* ; Sample Size ; Sputum

Our experience with recurrent dislocation of the patella on ten knees in eight patients seen at Seoul National University Hospital during the last 2 years and eight months is reported. Five were female and three male. The age ranged from seven to 27 years. In four of the patients the onset was attributable to a definite history of trauma, while in one patient the dislocation was considered due to developmental anomalies and in another it was clearly congenital Still another patient had a progressively short limb due to premature closure of the distal femoral epiphysis with accompanying flexion-valgus deformity of the knee, presumably caused by an unrecognized infection during early childhood One adolescent girl had bilateral knock knees. The knock knees were treated successfully by supracondylar osteotomy and one post-traumatic knee by classical Roux-Goldthwait procedure with equally excellent result, The rest were treated by Greens vastus medialis transfer with division of the iliotibial band or reefing of the medial joint capsule when necessary. In one knee dislocation recurred, probably due to avulsion of the transferred vastus, and two knees had residual subluxation and limitation of flexion. The results on the remaining seven knees were excellent.
Adolescent ; Congenital Abnormalities ; Dislocations ; Epiphyses ; Extremities ; Female ; Genu Valgum ; Humans ; Joint Capsule ; Knee Dislocation ; Knee ; Male ; Osteotomy ; Patella ; Quadriceps Muscle ; Seoul

Characterizations of the VP4 (P type) and VP7 (G type) genes of Korean isolates of bovine rotavirus were performed using RT-PCR/RFLP and nucleotide sequencing analysis. After RT-PCR amplification of partial length (1094bp) of the VP4 and full length (1062bp) of the VP7 genes, amplified PCR products were digested with restriction endonucleases and digestion patterns were compared with those of reference rotaviruses. With the VP4 genes, four RFLP (AD) profiles were observed; three (A, B and C) were the same as those of bovine rotavirus NCDV (P[1]), IND (P[5]) and B223 (P[11]), respectively, Profile D was the same as that of porcine rotavirus OSU (p[7]). With the VP7 genes, five RFLP profiles (I-V) were observed; three of them (1, II and III) were the same as those of bovine rotavirus NCDV (G6), Cody I-801 (G8), and B223 (G10), respectively, Profile IV and V were atypical to those of reference bovine rotaviruses used in this study. These two profiles were identified as G6 and G5, respectively, after analyzing and comparing the nucleotide sequences. The G typing analysis revealed that 61.9% (26/42) were G6, which included G6 subtype; 28.6% (12/42) were G5; 7.1% (3/42) were G10; 2.4% (1/42) were G8. The P typing analysis revealed that 54.8% (23/42) were P(5); 28.6% (12/42) were P(7); 11.8% (5/42) were P(11); 4.8% (2/42) were P(1). Our results showed that G6/P(5) were the most prevalent rotaviruses in diarrheic calves in Korea. Also, this is the first report that G5P(7) rotaviruses were identified from cattle with diarrhea.
Animals ; Base Sequence ; Cattle ; Diarrhea ; Digestion ; DNA Restriction Enzymes ; Korea ; Polymerase Chain Reaction ; Polymorphism, Restriction Fragment Length* ; Rotavirus*

Photoplethysmography(PPG) employs an infrared light-emitting diode to transmit light into the skin noninvasively. Light reflected from blood cells is received by a photocell or phototrotransistor which permits recording of the pulsatile cutaneous microcirculation. The use of PPG for vascular measurements in extremities is not new. Since Hertzmann, in 1938, first described the technique to measure skin blood flow, a few investigators have used PPG for clinical application. However, experimental reports on the photoplethysmographic assessment of blood flow after arterial reanastomosis are rare. We assessed the changes of blood flow after reanastomosis of the femoral artery in rabbits using photoplethysmography. We divided 20 rabbits into 3 experimental groups. In Group I, the femoral artery was surgically exposed and clamped for 60 minutes. In Group II, the femoral artery was surgically exposed and clamped, as in Group I, and then severed and anastomosed crudely in order to creat thrombus formation. In Group IU, the femoral artery was prepared as Group II and then anastomosed carefully to ensure patency. Blood flow was measured by photoplethysmography on the anteromedial aspect of the right hind leg, every 15 minutes for the fisrt 2 hours, at the 3rd day, I week, and II weeks post-operatively. The following results were obtained l. After the removal of vascular clamp, the mean time for the pulse wave to return to normal form was 63±24.0 minutes in Group I and 63±18.7 minutes in Group III. There was no statistically significant difference beween the two groups. When the wave form was normalized, it remained so continuously. 2. After the removal of vascular clamp, the mean time for the wave amplitude to return to normal was 108±11.2 minutes in Group I and 102±16.4 minutes in Group III. There was no statistically significant difference between the two groups. 3. The thrombosis which obstructed blood flow was formed within the first 60 minutes(mean time: 49±12.4 minutes) in all the animals in Group II. When the thrombosis was formed, it was readily detected by the change of wave form and by decrease in amplitude. 4. It is concluded from this experiments the changes of blood flow after reanastomosis of the femoral artery in rabbits were accurately assessed by PPG. It is suggested that PPG can be used clinically in monitoring blood flow after arterial reanastomosis.
Animals ; Blood Cells ; Extremities ; Femoral Artery ; Humans ; Leg ; Microcirculation ; Photoplethysmography ; Rabbits ; Research Personnel ; Skin ; Thrombosis

No abstract available.
Plasminogen Activators* ; Plasminogen* ; Pulmonary Embolism*

Serum Immunoglobulin (Ig)A, IgG, IgM, levels were measured in 99 coal workers' pneumoconiosis (CWP) patients and 12 healthy coal workers and 9 non-miners to compare with each group by the radiological categories, its complications and working period in coal mine. Serum were measured by nephelometry. The findings were as follows: 1) Serum IgA levels were significantly different between three groups of CWP patient, healthy coal worker and non-miner (mean+/-standard deviation: 226.4+/-87.7, 221.3+/-45.1, 170.1+/-65.7 respectively). 2) There were no significant differences of Ig levels among radiological categories of CWP. 3) There were no significant differences of Ig levels among simple pneumoconiosis and its complicated disorders. 4) The three Ig levels were slightly increased in the group of mining years less than 20 years (IgA: r=0.1869, p<0.10 IgG: r=0.2902, p<0.05 IgM: r=0.2889, p<0.05).
Coal* ; Humans ; Immunoglobulin A ; Immunoglobulin G ; Immunoglobulin M ; Immunoglobulins* ; Mining ; Nephelometry and Turbidimetry ; Pneumoconiosis*

No abstract available.
Dental Enamel* ; Dental Porcelain*

Adenoid cystic carcinoma occurs most commonly in the salivary glands, and also has been recognized in numerous other locations. However, it is rarely found in the prostate. We report a case of adenoid cystic c arcinoma of the prostate in a 77-year-old man whose chief complaint was urinary retention. Digital rectal examination transrectal ultrasonography revealed a markedly enlarged prostated and PSA was 4.6ng/ml. The transurethral prostatectomy was performed and the histopathological diagnosis was the adenoid cystic carcinoma. We review the clinical and pathologic feature of this disease.
Adenoids* ; Aged ; Carcinoma, Adenoid Cystic* ; Diagnosis ; Digital Rectal Examination ; Humans ; Prostate ; Salivary Glands ; Transurethral Resection of Prostate ; Ultrasonography ; Urinary Retention

Anomalous development of the odonteid precess is an uncommon clinical occurence that can seriously impair the integrity af the atlantoaxial articulation. Absence of the odontoid process may be either congenital or acquired, but clinically the etiology is of little importance as the clinical signs and symptoms and the treatment are identical in both. We experienced a case of congenital absence of the odontoid process and good result was obtained from the posterior atlantoaxial fusion with hale-cast.
Odontoid Process

Because most of the hip fracture is endemic to an elderly population, high mortality and morbidity has been encountered due to the fatal complications such as pneumonia, thromboembolism, and decubitus ulceration. So, it is essential to achieve early ambulation with complete reduction by strong interoal fixation divices in order to reduce those complications. As early as 25 years ago McCarroll remarked that this fracture must be considered “unsolved until the incidence of aseptic necrosis and nonunion could be diminished or abolished. Since that time improved reduction method and many new strong fixation divices such as Jewett nail-plate, Massie nail, and compression hip screw have been developed to achieve more accurate reduction and rigid immobilization. The following clinical results were shown by analysis of 117 cases of hip fractures experienced in the Department of Orthopedic Surgery, Seoul National University in the past 5 years from Jan. 1974 to Dec. 1978. 1. Femoral neck fractures were 67 cases and intertrochanteric fractures were 36 cases. 2. The most common cause of hip fractures was slip or fall (70.1%). 3. Incidence of femoral neck fracture was most frequent in the 6th decade, and that of the intertrochanteric fracture was in the 7th decade that is compared with 7th and 8th decade of Caucasian respectively. 4. Old hip fracture more than 3 weeks after trauma was in the 53.6%, and especially that of neck fracture was about 57%. 5. In the classification of the hip fractures, transcervical neck fracture was most frequent (70.1%), and unstable type (79.5%) in the intertrochanteric fracture. 6. Knowles pin was usually used in the stable neck fracture, while compression hip screw used in the unstable neck fracture. 7. Jewett nail-plate was usually used after Dimon-Hughston reduction, and compression hip screw after anatomical reduction in the unstable intertrochanteric fracture. But in the stable fracture either Jewett nail-plate or compression hip screw was usually used after anatomical reduction. 8. Endoprosthesis (26 cases), and total hip replacement arthroplasty (8 cases) were usually carried out in the old femur neck fracture treated by total hip arthroplasty was better than that by endoprosthesis. 9. Avascular necrosis was 13.3%, and nonunion 20% in the femur neck fracture. Nonunion was 12.5%, and delayed union 4.2% in the intertrochanteric fracture. With the above mentioned results, the following conclusion is obtained: 1. It is recommended that open reduction or arthriplasty of the hip should be performed if the closed reduction of the fracture of femoral neck is not adequate. 2. Graden alignment index is a good criteria for adequate reduction of femoral neck fracture. 3. Malunion induces the fate of femoral head to be avascular in the femoral neck fracture. 4. Compression hip screw is a good stabilizer for unstable intertrochanteric fracture. 5. The position of femoral endoprosthesis for delayed or inadequately reduced femoral neck fracture may be replaced by total hip replacement. The clinical result of total hip replacement is far better than that of femoral endoprosthesis In the cases of arthroplasty indication.
Aged ; Arthroplasty ; Arthroplasty, Replacement, Hip ; Classification ; Early Ambulation ; Femoral Neck Fractures ; Femur Neck ; Head ; Hip Fractures ; Hip ; Humans ; Immobilization ; Incidence ; Methods ; Mortality ; Neck ; Necrosis ; Orthopedics ; Pneumonia ; Pressure Ulcer ; Seoul ; Thromboembolism