Clinical analysis is done on 108 meniscus injuries operated on at Kwangju Armed Forces General Hospital from 1961 to 1971, with the following results. l. All cases included in this report were military personnels aged from 19 to 35 years old 2. The lateral meniscus was more frequently injured than the medial with a ratio of 79 to 29 (8:3) and the right side knee than the left with a ratio of 60 to 48(6:5). 3. The posterior horn tears were the most common type of injuries involved in 40 cases (41%) 4. There could be found no history of definitive trauma in l7 cases.
Animals ; Arm ; Gwangju ; Horns ; Hospitals, General ; Humans ; Knee ; Menisci, Tibial ; Military Personnel ; Tears

BACKGROUND: the prediction on changes in the lung function after lung surgery would be an important indicator in terms of the operability and postoperative complications. In order to predict the postoperative FEV1 - the commonly used method for measuring changes in lung function- a comparison between the quantitative CT and the perfusion lung scan was made and proved its usefulness. MATERIAL AND METHOD: The subjects included 22 patients who received perfusion lung scan and quantitative CT preoperatively and with whom the follow-up of PFT were possibles out of the pool of patients who underwent right lobectomy or right pneumonectomy between June of 1997 and December of 1999. The FEV1 and FVC were calibrated by performing the PFT on each patient and then the predicted FEV1 and FVC were calculated after performing perfusion lung scan and quantitative CT postoperatively. The FEV1 and FVC were calibrated by performing the PFT after 1 week and after 3 momths following the surgery. RESULTS: There was a significant mutual scan and the actual postoperative FEV1 and FVC at 1 week and 3 months. The predicted FEV1 and FVC(pneumonectomy group : r=0.962 and r=0.938 lobectomy group ; r=0.921 and r=913) using quantitative CT at 1 week postoperatively showed a higher mutual relationship than that predicted by perfusion lung scan(pneumonectomy group : r=0.927 and r=0.890 lobectomy group : r=0.910 and r=0.905) The result was likewise at 3 months postoperatively(CT -pneumonectomy group : r=0.799 and r=0.882 lobectomy group : r=0.934 and r=0.932) CONCLUSION: In comparison to perfusion lung scan quantitative CT is more accurate in predicting lung function postoperatively and is cost-effective as well. Therefore it can be concluded that the quantitative CT is an effective method of replacing the perfusion lung scan in predicting lung function post-operatively. However it is noted that further comparative analysis using more data and follow-up studies of the patients is required.
Follow-Up Studies ; Humans ; Lung* ; Perfusion* ; Pneumonectomy ; Postoperative Complications

Background: Coronavirus disease 2019 (COVID-19) vaccination is necessary to reach herd immunity and essential for mitigating the spread of the pandemic. In May 2021, the US FDA and the EU have expanded the emergency use authorization for a COVID-19 vaccine to children aged 12 to 15. The aim of this study was to investigate parental acceptability of COVID-19 vaccination for their children, factors affecting their acceptability, and children's perceptions of COVID-19 vaccines in Republic of Korea. Methods: We conducted a questionnaire survey at two tertiary hospitals from May 25, 2021 to June 3, 2021. Subjects were parents having children under 18 years and children aged 10–18 years. Results: Two hundred twenty-six parents and 117 children aged 10–18 years were included in the final analysis. Overall, 76.5% and 64.2% of parents intended to get vaccinated against COVID-19 and intended to have their children vaccinated, respectively. However, only 49.6% of children responded that they would get COVID-19 vaccination. In the multivariate analysis, high confidence in the safety of COVID-19 vaccines (adjusted odds ratio [AOR], 4.87; 95% confidence interval [CI], 1.32–24.12), parents' willingness to vaccinate themselves (AOR, 19.42; 95% CI, 6.85–64.00), and awareness of the need to vaccinate children against COVID-19 (AOR, 13.15; 95% CI, 4.77–41.27) were associated with positive factors intention to vaccinate their children. Conclusion This study provides insight into how parents think about the COVID-19 vaccine for their children in South Korea. Our findings could be referenced in establishing a policy for childhood COVID-19 vaccination in the future.

Background: Coronavirus disease 2019 (COVID-19) vaccination is necessary to reach herd immunity and essential for mitigating the spread of the pandemic. In May 2021, the US FDA and the EU have expanded the emergency use authorization for a COVID-19 vaccine to children aged 12 to 15. The aim of this study was to investigate parental acceptability of COVID-19 vaccination for their children, factors affecting their acceptability, and children's perceptions of COVID-19 vaccines in Republic of Korea. Methods: We conducted a questionnaire survey at two tertiary hospitals from May 25, 2021 to June 3, 2021. Subjects were parents having children under 18 years and children aged 10–18 years. Results: Two hundred twenty-six parents and 117 children aged 10–18 years were included in the final analysis. Overall, 76.5% and 64.2% of parents intended to get vaccinated against COVID-19 and intended to have their children vaccinated, respectively. However, only 49.6% of children responded that they would get COVID-19 vaccination. In the multivariate analysis, high confidence in the safety of COVID-19 vaccines (adjusted odds ratio [AOR], 4.87; 95% confidence interval [CI], 1.32–24.12), parents' willingness to vaccinate themselves (AOR, 19.42; 95% CI, 6.85–64.00), and awareness of the need to vaccinate children against COVID-19 (AOR, 13.15; 95% CI, 4.77–41.27) were associated with positive factors intention to vaccinate their children. Conclusion This study provides insight into how parents think about the COVID-19 vaccine for their children in South Korea. Our findings could be referenced in establishing a policy for childhood COVID-19 vaccination in the future.

The effects of pretreatment of Co-Cr alloy, including two adhesive primers that contain either MDP or MAC-10, and silicoating on the bond. The results obtained as follows : Strength of 4-META/MMA-TBB resin were investigated using FT-IR SEM, and EDAX. in the SEM observation of surface morphologies, the sandblasted specimen exibited a very rough surface, whereas the surfaces of the two groups primed with either MDR or MAC-10 were covered with a layer of primer, and the surface morphology of the silicoated specimen remained almost the same after sandblasting. Before the thermocycling tests, the group treated with MDP demonstrated the highest mean tensile bond strength and the sandblasted group showed the lowest bond strength. After 20,000 themocyling, the mean tensile bond strength of the sandblasted group exhibited a 50% reduction in bond strength, while the other showed a 20~30% reduction. Observation of the metal-resin interface revealed that in all groups the resin permeated the rough surface formed by sandblasting thereby producing a mechnical bond between the metal and the resin, It was also found that thermocycling resulted in a gap formation at the metal-resin interface of the specimens, and the sandblasted group exhibited a larger gap width than the other groups. in fracture mode, all specimens indicated a cohesive fracture within the resin before thermocycling. However, thermocyling produced adhesive failure at the edge of the resin-metal interface in most specimens, The sandblasted group, which exhibited the lowest bond strength after thermocycling, also demonstrated the largest area of adhexive failure.
Adhesives ; Alloys*

No abstract available.
Stomach*

Solid hemangioblastomas of the medulla oblongata are benign vascular neoplasms located in a critical area. We experienced a case of solid hemangioblastoma originated in the medulla oblongata with the syrinx in the cervical spinal cord. Preoperative magnetic resonance imaging provided precise anatomical location and radiologic features of the tumor, which facilitated its total removal. Cardiovascular and pulmonary disorders often complicate this type of surgery, and postoperative dysphagia is a frequent sequelae.
Deglutition Disorders ; Hemangioblastoma* ; Magnetic Resonance Imaging ; Medulla Oblongata* ; Spinal Cord ; Vascular Neoplasms

BACKGROUND: There has been no clinical study of skin problems of the amputee in Korea and at Veterans Hospital, we have experienced so many skin problems of amputees. OBJECTIVE: We tried to observe skin problems of amputees and to relate them with sweating, poor hygiene, poor fit of socket, mechanical trauma, and duration of wearing prosthesis. METHODS: 125 extremity amputees who visited the Seoul Veterans Hospital during the period of 5 years from Jan. 1994 to Dec. 1998 were analyzed clinically. RESULTS: The study results are summarized as follows: 1. Among the 125 extremity amputees, the number of male patients was 124(99.2%) and that of female patients was 1(0.8%). The age distribution showed a peak incidence in the 7th decade(30.4%), followed by the 5th decade(28.8%), 6th decade(24.8%), and the mean age was 56.4 years. 2. The most common type of amputation was below the knee amputation(74 cases), the second was above the knee amputation(37 cases). 3. The duration of wearing prosthesis was above 20 years in 88 patients(70.4%), 16-20 years in 15(12%), 11-15 years in 11(8.8%), and 1-5 years in 6(4.8%). 4. The skin problems of the amputees were superficial fungal infection, chronic ulcer, intertriginous dermatitis, callus, corn, verrucous hyperplasia, verruca which were 63 cases(50.4%), 26 cases(20.80%), 17 cases(13.6%), 6 cases(4.8%), 5 cases(4%), 5 cases(4%), 3 cases(2.4%) respectively. 5. The predisposing factors of the dermatoses were mechanical trauma(84 cases) which acted as a cause of the chronic ulcer, intertriginous dermatitis, corn and callus, sweating(80 cases) and poor hygiene(11 cases) as those of superficial fungal infection, and poor fitting(6 cases) as that of verrucous hyperplasia. CONCLUSION: Superficial fungal infection and chronic ulcer were the main skin problems of the amputee. The longer the duration of wearing prosthesis, the more skin problems developed. The mechanical trauma and sweating were the major predisposing factors of stump dermatoses, especially of chronic ulcer and superficial fungal infection. Amputation is only the beginning of a long period of rehabilitation, and the treatment of the patient and the affected skin goes on for the rest of the patient's life. This clinical study suggests that the dermatologist must be concerned of the care of amputee's skin problems.
Age Distribution ; Amputation ; Amputees* ; Bony Callus ; Causality ; Dermatitis ; Extremities ; Female ; Hospitals, Veterans ; Humans ; Hygiene ; Hyperplasia ; Incidence ; Knee ; Korea ; Male ; Prostheses and Implants ; Rehabilitation ; Seoul ; Skin Diseases ; Skin* ; Sweat ; Sweating ; Ulcer ; Warts ; Zea mays

OBJECTIVE: The purpose of this study was to compare the skeletal, dental, and soft-tissue treatment effects of nonextraction therapy using the modified C-palatal plate (MCPP) to those of premolar extraction (PE) treatment in adult patients with Class II malocclusion. METHODS: Pretreatment and posttreatment lateral cephalographs of 40 adult patients with Class II malocclusion were retrospectively analyzed. The MCPP group comprised 20 patients treated with total arch distalization of the maxillary arch while the PE group comprised 20 patients treated with four PE. Fifty-eight linear and angular measurements were analyzed to assess the changes before and after treatment. Descriptive statistics, paired t-test, and multivariate analysis of variance were performed to evaluate the treatment effects within and between the two groups. RESULTS: The MCPP group presented 3.4 mm of retraction, 1.0 mm of extrusion, and 7.3° lingual inclination of the maxillary central incisor. In comparison, the PE group displayed greater amount of maxillary central incisor retraction and retroclination, mandibular incisor retraction, and upper lip retraction (5.3 mm, 14.8°, 5.1 mm, and 2.0 mm, respectively; p < 0.001 for all). In addition, the MCPP group showed 4.0 mm of distalization and 1.3 mm of intrusion with 2.9° distal tipping of the maxillary first molars. CONCLUSIONS: These findings suggest the MCPP is an effective distalization appliance in the maxillary arch. The amount of incisor retraction, however, was significantly higher in the PE group. Therefore, four PE may be recommended when greater improvement of incisor position and soft-tissue profile is required.
Adult ; Bicuspid* ; Humans ; Incisor ; Lip ; Malocclusion ; Molar ; Multivariate Analysis ; Retrospective Studies

PURPOSE: The purpose of this report is to clarify the clinicopathologic features, survival rates and prognostic factors of gastric cancers in young age group. MATERIALS AND METHODS: We reviewed 133 patients with gastric cancer under 30 years of age who underwent surgery from January 1986 to December 1995 at the Department of Surgery, Seoul National University Hospital. We have analyzed the sex, age, Borrmann type, histologic differentiation, Lauren classification, depth of invasion, lymph node metastasis, distant metastasis, location of tumor, size of tumor, curability and extent of operation. The 5 year survival rates and prognostic factors were also evaluated. The Kaplan-Meier method, Log-Rank test and Cox hazards proportional mode were used for the statistical analyses. RESULTS: The overall 5 year survival rate was 55.3% in all 133 patients in contrast to 67.4% in 108 patients who underwent gastric resections. Significant prognostic factors were Borrmann type, histologic differentiation, depth of invasion, lymph node metastasis, distant metastasis, location of tumor, size of tumor, curability and extent of operation in univariate analysis. Lymph node metastasis was the only significant independent prognostic factor in multivariate analysis. CONCLUSION: In our study, the 5 year survival rate in young age group was comparable to that of prevalent age group. This is attributed to the relatively higher incidence of early gastric cancer and more frequent curative resections in this young age group.
Classification ; Humans ; Incidence ; Lymph Nodes ; Multivariate Analysis ; Neoplasm Metastasis ; Seoul ; Stomach Neoplasms* ; Survival Rate*