• The Journal of Korean Orthopaedic Ultrasound Society
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• v.4 no.2
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• pp.93-96
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• 2011

We reported a patient with a large pedunculated cavernous hemangioma located beneath inferomedial border of the scapular bone and the trapezius muscle checked by ultrasonography before and after the operation. In ultrasonographic finding, the peduncle was difficult to be visualized preoperatively due to acoustic shadowing.

• The Journal of Korean Orthopaedic Ultrasound Society
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• v.4 no.2
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• pp.88-92
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• 2011

The incidence of acute Achilles tendon rupture is increasing as sporting activities are becoming more popular nowadays. There are many reports on the merits and disadvantages of surgical or conservative treatment for the injury. We performed a conservative treatment of acute Achilles tendon rupture with a serial casting and observed the progression of tendon healing ultrasonographically.

• The Journal of Korean Orthopaedic Ultrasound Society
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• v.4 no.1
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• pp.50-58
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• 2011

Ultrasound-guided intervention is very safe and useful for the treatment of shoulder pain. Injection techniques vary according to the diseases causing shoulder pains. This review tried to describe various methods of the ultrasoundguided intervention around the shoulder joint.

• The Journal of Korean Orthopaedic Ultrasound Society
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• v.6 no.1
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• pp.20-27
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• 2013

The anatomical structures of foot and ankle are more superficial than other body structures. The ultrasonographic examinations are easy and useful diagnostic tools in the foot and ankle field. The interpretation of ultrasonographic findings depends on the observer's experiences of sonographical anatomy. Repeated ultrasonographic examination of the foot and ankle can improved the skills in diagnosing the disease of the foot and ankle.

• The Journal of Korean Orthopaedic Ultrasound Society
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• v.6 no.1
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• pp.28-37
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• 2013

Ultrasound is a first line examination of the knee and useful diagnostic tool in assessing the various knee lesions. The advantages of ultrasound are that it is non-invasive, easily available at bed side, cheap, well accepted by patients, and that it has technical benefits including dynamic evaluation. Its limitations include reliability, which is largely operator dependent and its inability to evaluate deep structures. Technical guidelines of the ultrasound released by European Society of MusculoSkeletal Radiology (ESSR) and ultrasonographic findings of various knee lesions are described.

• The Journal of Korean Orthopaedic Ultrasound Society
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• v.6 no.1
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• pp.15-19
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• 2013

In General, popliteal cyst found in children does not present a symptom and also it rarely causes a complication. The researcher observed an entrapment of tibial nerve and popliteal artery in a child with popliteal cyst without intra-articular lesion, and treated it by using early decompression and prolotherapy, which is presented in this study with literature review.

• Clinics in Shoulder and Elbow
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• v.18 no.2
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• pp.113-118
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• 2015

Rotator cuff tear is a common reason for shoulder pain. Although the surgical technique of rotator cuff repair is developing, high retear rate requires additional supplementary methods. Among these supplementary methods, as a kind of biologic augmentation, platelet-rich plasma (PRP) has been spotlighted and has recently been studied by many researchers. PRP, a concentrate of platelet extract obtained from whole blood, contains numerous growth factors. As this is known to play an important role in the tissue recovery process, it had been used for research in a variety of fields including orthopedics. Use of PRP has been attempted in surgical treatments of rotator cuff tear for better results; however, only a few large-scale research studies on the effect of PRP have been reported. Clinical results of each study are also variable. Therefore research using large-scale randomized, double-blind trials should be conducted in order to prove the application range, safety, and clinical effects of PRP.

• Journal of Chest Surgery
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• v.26 no.1
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• pp.59-63
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• 1993

A clinical evaluation was performed with a population of 49 patients of chest trauma, who were diagnosed to undergo ventilator therapy, and had gone through ventilator therapy at the Department of Thoracic and Cardiovascular Surgery, Kyungpook University Hospital. One of most common causes of chest trauma was vehicle accidents [77.5%] with the prevalent age group being their forties. The common findings were multiple rib fractures [89.8%], hemopneumothrax [81.6%], lung contusion [61.2%] and flail chest [44.9%]. Their common combined injuries were the orthopedics and neurosugical injuries [86.7%]. Complications caused by chest trauma were pneumonia, respiratory failure, atelectasis, barotrauma and empyema. Pulmonary infections were commonly associated with mechanical ventilation in the long term group and were best prevented by using bronchial hygiene therapy.The mortality rate was 5.8% of the total patients and that was 38.8% of the patients, who needed ventilator therapy. The causes of death were pneumonia, respiratory failure, acute renal failure and hypovolemic shock. Mechanical ventilation has an important place in the treatment of patients with severe chest trauma.

• The Korean Journal of Cytopathology
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• v.17 no.1
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• pp.69-74
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• 2006

Alveolar soft part sarcoma (ASPS) is a rare soft tissue sarcoma, which occurs predominantly in adolescents and young adults. The cytological characteristics of this condition have been described only rarely in the literature. Here, we report a case of alveolar soft part sarcoma. A 28-year-old man presented with a mass in his right buttock, which had persisted for three years. The mass was subjected to a fine needle aspiration cytology (FNAC). The smears were cellular. The observed tumor cells were round or polygonal, and exhibited vesicular nuclei with prominent nucleoli and finely granular cytoplasm. Naked nuclei were frequently detected. Tumor cells were arranged singularly, but occasionally in a pseudoalveolar pattern.

• Proceedings of the KIEE Conference
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• 2006.07b
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• pp.897-898
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• 2006

This paper presents test results for the speed control system of PMSM (Permanent Magnet Sychronous Motor). The PMSM has higher efficiency and torque per volume than other motors because PMSM use permanent magnet of high energy density instead of field winding. In this paper, current and speed control of PMSM using DSP was accomplished.