• The Journal of the Korean bone and joint tumor society
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• v.7 no.2
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• pp.73-79
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• 2001

Giant cell tumor is usually found around the knee joint, especially in the distal femur or proximal tibia. Despite being classified as benign, it has unusual biological behavior of local aggressiveness and tend to have severely destructive lesion and develop rare pulmonary metastasis. Therefore, when the patient is presented to the physician with an expansile lytic lesion of challenging clinicopathologic entity extending to subchondral bone, the physician faces up to difficulties in treatment. We report a case of 25 years old patient having recurrent giant cell tumor in the right distal femur which developed metastasis to lung. The primary bone lesion was treated with local curettage and fillings with methylmethacrylate, but when he returned to the hospital two years later, the recurrence had developed with lung metastasis.

• The Journal of the Korean bone and joint tumor society
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• v.16 no.2
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• pp.80-86
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• 2010

Purpose: The skeleton is commonly affected by metastatic cancer. The purpose of this study was to evaluate the results of treating metastatic pathologic fractures in lower extremities using locking plates. Materials and Methods: Between 2004 and 2010, we evaluated 12 patients (13 cases) of metastatic pathologic fractures in lower extremities, treated with the locking plate. Mean patient age was 62.2 years (range, 50-81 years), the locations of the fractures were; proximal femur in 2 cases, femoral mid-shaft in 3, distal femur in 3, proximal tibia in 4, and distal tibia in 1 case. The interval to wheelchair ambulation, pain relief and complications were evaluated. Additionally, we assessed operation time and postoperative blood loss. Results: Mean time from operation to wheelchair ambulation was 3.2 days (range, 1-6 days). Mean VAS scores improved from a preoperative score of 8.1 points (range, 7-9 points) to a score of 2.7 points (range, 2-4 points) at 1 week postoperatively. No early complications associated with surgery were encountered. Mean operation time was 88.4 minutes (range, 70-105 minutes), and mean postoperative blood loss was 246.5 ml (range, 130-320 ml). Conclusion: Internal fixation of metastatic pathologic fractures using a locking plate in the lower extremity can be an effective treatment option in the meta- or diaphyseal area of long bones with massive bony destruction or poor bone stock by offering early ambulation, pain relief and low postoperative complications.

• The Journal of Korean Orthopaedic Ultrasound Society
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• v.5 no.1
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• pp.22-26
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• 2012

Ultrasonography is an effective first-line examination for soft-tissue masses. We reported a case who presented with superficial soft-tissue mass on the left distal thigh accompanying by pain. On ultrasonography, the lesion was determined as a benign mass. The patient, however, was diagnosed with synovial sarcoma based on the histopathologic result. Herein, we reported the case and reviewed of relevant literature.

• The Journal of the Korean bone and joint tumor society
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• v.18 no.2
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• pp.89-93
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• 2012

The most common anatomic location of calcific tendinitis is the suprasupinatus muscle of the shoulder joint. However, it is known to develop in any joint including the hip, knee. Infarction of skeletal muscle in the distal areas of the limbs due to vascular occlusion is a well recognized systemic condition in patients who have diabetes. The author experienced mass-like lesion combined muscle infarction and calcification within pure semitendinosus tendon without diabetes in posterosuperior area of distal thigh in old age.

• The Journal of the Korean bone and joint tumor society
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• v.11 no.2
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• pp.175-182
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• 2005

Purpose: Bone tumor occurred in femur frequently involve proximal intertrochanteric region or distal metaphyseal region. Sometimes, the pathologic fracture can happen according to the size of tumor due to the substantial biomechanical stresses. Therefore, the prognosis can be improved biomechanically by the angled blade plate considering the anatomic configuration after the excision of tumor. Materials and Methods: Between October 1991 and April 2005, there were a total of 16 patients(17 cases) who were treated by the excision of tumor and internal fixation with the angled blade plate for bone tumor occurred in femur. After the excision of tumor, we filled the cavity by bone graft in 11 cases and bone cement in 6 cases. The internal fixation was used by angled blade plate in all cases. Result: The average follow-up time was 55.5 months(6-144 months) in 16 patients(17 cases). No metal failure occurred after the operation. Reoperation was performed in 4 cases due to tumor recurrence, and the internal fixation was firm until that. Conclusion: The angled blade plate can prevent the fracture until grafted bone incorporated to host bone, and protect fragile connection between cement and host bone.

• Journal of the Korean Arthroscopy Society
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• v.10 no.1
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• pp.118-122
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• 2006

Purpose: We introduce a technique of all inside arthroscopic capsular imbrication and lateral release used to treat patellofemoral instability. Methods: With the arthroscope in the anteromedial portal for best viewing, the arthroscopic scissor is placed through superolateral portal for proximal to distal release. The release performed 5mm to 1cm from the edge of the patella. After completion of the procedure, with the arthroscope in anterolateral portal, we inserted 5mm cannula in superolateral portal and made working portal from superomedial portal. Medial reefing was performed with all inside technique by using curved needle of the spectrum suturing system and No. 1 monofilament PDS suture is passed through the superomedial portal percutaneously and retrieved through a superolateral portal. Conclusion: Several methods for arthroscopic patella realignment have been proposed, but they have consisted primarily of arthroscopically assisted techniques using a medial incision. We believe that our procedure is preferable to arthroscopically assisted methods commonly used, in that an incision is avoided and the vastus medialis obliqqus is not violated. Our technique is minimally invasive and is easy to control the tightness of the medial patellofemoral ligament (MPFL) under direct vision.

• The Journal of the Korean bone and joint tumor society
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• v.14 no.2
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• pp.157-162
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• 2008

Nowadays, most of the malignant bone tumor patient underwent limb salvage operation, however, reconstructive options for skeletally immature group are still controversial. There are three necessary conditions of most ideal reconstructive method in treating the skeletally immature children. As the epiphyseal plate sacrification is usually inevitable in malignant bone tumor around knee joint, ideal reconstructive technique would be as follows; 1)minimal or no damage to theadjacent epiphyseal plate, 2) maintaining mobile joint, 3) index procedure does not disturb subsequent operation such as lengthening. Segmental resection and reconstruction using autogenous pasteurized graft was done for 4 years old meta-diaphyseal osteosarcoma of femur. At 6 months from index operation, plain radiograph showed pasteurized bone resorption and loosening of fixation devise. To overcome the complication, we used allograft reconstruction by impacting the proximal host bone to the fluted portion of allobone. Three months later, proximal bone union was observed and patient showed good functional outcome.

• The Journal of the Korean bone and joint tumor society
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• v.5 no.1
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• pp.70-75
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• 1999

We present a case of parosteal osteosarcoma of the femur with secondary dedifferentiation. This 57-year-old woman was radiologically diagnosed as a parosteal osteosarcoma in 1987. In 1992, excisional biopsy revealed a classical parosteal osteosarcoma with diploidy DNA pattern. In 1998, she revisited due to a recurrent tumor with pathologic fracture. The resected specimen showed a classic parosteal osteosarcoma with area of dedifferentiation, showing high-grade spindle cell sarcoma. This dedifferentiated area revealed aneuploidy cell population on DNA flow cytometry. This case reminds us that not all parosteal osteosarcomas are low-grade lesions. Some low-grade lesions may dedifferentiate to become high-grade tumors after inadequate excision.

• Korean Journal of Veterinary Research
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• v.16 no.2
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• pp.205-219
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• 1976

한국재래산양(韓國在來山羊) 12마리의 후지근(後肢筋)을 절개하여 관찰하였던 바 다음과 같은 결과를 얻었다. 1. 한국재래산양(韓國在來山羊)의 후지근(後肢筋)에서는 다음과 같은 근(筋)들을 관찰할 수 있었다 : 소요근(小腰筋) M. psoas minor, 대요근(大腰筋) M. psoas major, 장골근(腸骨筋) M. iliacus, 요방형근(腰方形筋) M. quadratus lumborum, 대퇴근막장근(大腿筋膜張筋) M. tensor fasciae lata, 중둔근(中臀筋) M. gluteus medius, 심둔근(深臀筋) M. gluteus profundus, 둔이두근(臀二頭筋) M. gluteobiceps, 반건양근(半腱樣筋) M. semitendinosus, 반막양근(半膜樣筋) M. semimbranosus, 봉공근(縫工筋) M. sartorius, 박근(薄筋) M. gracilis, 치골근(恥骨筋) M. pectineus, 내전근(內轉筋) M. adductor, 대퇴방형근(大腿方形筋) M. quadratus femoris, 외폐쇄근(外閉鎖筋) M. obturatorius externus, 내폐쇄근(內閉鎖筋) M. obturatorius internus, 쌍자근(雙子筋) M. gemelli, 대퇴사두근(大腿四頭筋) M. quadriceps femoris, 제삼비골근 M. fibularis tertius, 내측지신근(內側趾伸筋) M. extensor digitorum medialis, 장지신근(長趾伸筋) M. extensor digitorum longus, 전경골근(前脛骨筋) M. tibialis cranialis, 장비골근 M. fibularis longes, 외측지신근(外側趾伸筋) M. extensor digitorum lateralis, 비복근 M. gastrocnemius, 가제미근(筋) M. soleus, 천지굴근(淺趾屈筋) M. flexor digitorum superficialis, 심지굴근(深趾屈筋) M. flexor digitorum profundus, 슬와근(膝窩筋) M. popliteus, 골간근(骨間筋) M. interosseus medius. 2. 천둔근(淺臀筋)의 전부(前部)는 대퇴근막장근(大腿筋膜張筋)과 융합된 것 같고, 후부(後部)는 대퇴이두근(大腿二頭筋)과 융합된 것 같다. 그러나 천둔근(淺臀筋)의 후부(後部)와 대퇴이두근(大腿二頭筋)이 결합된 것으로 생각되는 부분에는 완전융합이 일어나지 않고 천둔근(淺臀筋)을 구분(區分)할 수 있을 정도로 표면으로 2근(筋)을 분리(分離)할 수 있었다. 3. 외측지신근(外側趾伸筋)과 내측지신근(內側趾伸筋)의 건(腱)은 부전골의 원위(遠位) 1/3부(部)에서 서로 건막성(腱膜性)띠에 의하여 서로 연결 되었는데, 이 건막성(腱膜性) 띠는 건섬유(腱纖維)의 방향(方向)으로 보아 외측지신근(外側趾伸筋)의 건(腱)에서 분리(分離)되어 나온 한 가지 (branch)가 내측지신근(內側趾伸筋)의 건(腱)으로 이행되고 있었다. 4, 양(羊)에서 볼 수 있는 이상근(梨狀筋) M. piriformis과 장모지신근(長母趾伸筋) M. extensor hallucis longus은 나타나지 않았다.

• The Journal of the Korean bone and joint tumor society
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• v.18 no.2
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• pp.113-117
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• 2012

A 73-year-old male was admitted for unhealed wound. Eight months ago, the patient had been operated for excision of soft tissue mass on left distal thigh area in previous hospital and after 4 months from first operation, had been reoperated because of recurrence. The pathologic diagnosis of previous operation was simple cyst. In operating finding, the mass invaded the vastus lateralis fascia and had irregular margin and adhesion. We carried out simple excision with retaining 5 cm of free margin from the mass. The pathologic diagnosis of our hospital was malignant fibrous histiocytoma, and then the patient was performed radiation therapy. In 1 year follow-up, there was no significant finding either increasing mass size or metastasis. We misdiagnosed as simple cyst and then performed simple excision, however finally pathologic diagnosis confirmed as malignant fibrous histiocytoma. It is considered to operate a mass that preoperative proper evaluation and diagnosis are required.