http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
조용진,정성택 연세대학교의과대학 2014 Yonsei medical journal Vol.55 No.1
Purpose: Multiple hereditary exostoses of the forearm typically form in the distal ulna, causing disturbances in the growth of the ulna and functional disability. Multiple hereditary exostoses inhibit the growth of the ulna, leading to an acquisition of a varus deformity in the radius, which sometimes leads to dislocation of the radial head, the development of limitations in the pronation-supination of the forearm,and cosmetic problems. Materials and Methods: We retrospectively reviewed the cases of four patients who had deformities of the forearm with radial head dislocation associated with multiple hereditary exostoses, and evaluated the radiologic and clinical results of excision of the osteochondromas from the distal ulna and gradual ulnar lengthening with an Ilizarov external fixator. Results: Good clinical and radiological results were obtained after a mean follow-up of 25 months. At the most recent follow-up, radial bowing, ulnar shortening, carpal slip, and the pronation/supination arch of the forearm had improved. There was little change in terms of preoperative radial articular angle and the flexion/extension arch of the elbow by the most recent follow-up. Conclusion: Treatment of four forearms from four patients by excision of osteochondromas and gradual lengthening of the ulna with an Ilizarov external fixator spontaneously reduced dislocations of the radial heads without the need for any additional operative intervention. All patients were satisfied with the final results.
Performance Test of a Real-Time Measurement System for Horizontal Soil Strength in the Field
조용진,이동훈,박원엽,이규승 한국농업기계학회 2016 바이오시스템공학 Vol.41 No.4
Purpose: Soil strength has been measured using a cone penetrometer, which is making it difficult to obtain the spatial datarequired for precision agriculture. Our objectives were to evaluate real-time horizontal soil strength (RHSS) to measure soilstrength in real time while moving across the field. Using the RHSS data, the tillage depth was determined, and the powerconsumption of a tractor and rotavators were compared. Methods: The horizontal soil-strength index (HSSI) obtained by theRHSS was compared with the cone index (CI), which was measured using a cone penetrometer. Comparison analysis inaccordance with the measurement depth that increased at 5-cm interval was conducted using kriged maps at six sensingdepths. For tillage control and evaluation of the power consumption, the system was installed with a potentiometer fortillage depth, a torque sensor from the rear axle, and a power take-off (PTO) shaft. Results: The HSSI was lower than the CI,but they were the same at 54.81% of the total grids for the 5-cm depth and at 3.85% for the 10-cm depth. In accordance withthe recommended tillage map, tillage operations between 0 and 15 cm left 2.3% and 7% residue cover on the soil, and thatbetween 20 and 10 cm covered a wider utilization of 3% and 18.4%, respectively. When the tillage depth was 15 cm, thecomparison result of the power requirements between the PTO and rear axle in terms of control performance revealed thatthe maximum power requirements of the axle and PTO were 44.63 and 23.24 kW, respectively. Conclusions: An HSSImeasurement system was evaluated by comparison with the conventional soil strength measurement system (CI) andapplied to a tractor to compare the tillage power consumption. Further study is needed on its application to various farmworks using a tractor for precision agriculture.
Alveolar Soft Part Sarcoma: Clinical Presentation, Treatment and Outcome in a Series of 19 Patients
조용진,김준영 대한정형외과학회 2014 Clinics in Orthopedic Surgery Vol.6 No.1
Background: Alveolar soft part sarcoma (ASPS) is a rare soft tissue tumor that usually affects young patients. Because of the rarity of the disease, most reports relating to ASPS are in the form of case reports or small series. Methods: We performed a retrospective study to evaluate the clinicopathologic features, treatment, outcome and pattern of treatment failure in a consecutive series of patients with localized or metastatic ASPS between 1996 and 2011. Demographics, tumor sizes, sites and extent of disease, treatments provided, progression-free survival, and overall survival were evaluated. Results: A total of 19 patients were identified. The clinical assumptive diagnosis of the first medical examination doctor was benign soft tissue tumor in 5 cases (26%) and benign hemangioma in 4 cases (21%), delaying treatment. The most common location of primary tumor was the thigh. The median diameter of the mass was 55 mm (range, 10 to 130 mm). An R0 resection was obtained in 11 cases. Adjuvant radiotherapy was delivered in 8 cases; postoperative systemic chemotherapy was delivered in 10 cases. Eight out of 15 patients (53%) exhibited metastases either at presentation or later. Median overall follow-up was 54 months. Conclusions: The treatment principle for alveolar soft tissue sarcoma is massive resection, and when the surgical margin is questionable, radiation treatment can be added for prevention of local recurrence. Also, due to discovery of metastases and local recurrence, even after 5 years of general treatment, outpatient department follow-up is needed, and we need to keep in mind that lung, intracranial, and bone metastases are common.