• The Journal of the Korean bone and joint tumor society
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• v.20 no.1
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• pp.27-31
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• 2014

Osteochondromadevelop most commonly at distal femur, proximal humerus and proximal tibia, but the rib osteochondroma was reported less commonly. In this report, scapular snapping syndrome complicated by adventitious bursa and soft tissue pseudotumor surrounding the osteochondroma of the $6^{th}$ rib body was treated successfully by surgical excision of them. We report this rare case with reviewing the relevant literature.

• The Journal of the Korean bone and joint tumor society
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• v.1 no.1
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• pp.60-67
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• 1995

It is difficult to manage the growing deformity of forearm bone caused by hereditary osteochondromatosis in children, because deformity and discrepancy of limb length is progressive. The are many treatment methods of these problems including excisio of osteochondroma, lengthening of ulna, shortening of radius, corrective osteotomy with or without lengthening apparatus. Among many treatment methods, we tried free vascularized epiphyseal transplantation with the proximal fibular epiphysis in 3 patients of hereditary osteochondromatosis for inducement of continuous bone growth and deformity correction. The average duration of follow up was 7 years and 1 month, the shortest duration being to 4 years and 5 months and the longest 10 years and 8 months. Serial radiologic and clinical evaluation were carried out during follow up and there were satisfactory length gain, deformity correction and improvement of adjacent joint motion in 2 cases. According to our follow up evaluation, free vascularized epiphyseal transplantation is valuable procedure in forearm deformity of hereditary osteochondromatosis although it needs skillful and experienced operative technique.

• The Journal of the Korean bone and joint tumor society
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• v.1 no.1
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• pp.17-22
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• 1995

From Sept. 1986 to Dec. 1992, seventy three cases of Enneking's stage IIB osteosarcoma of extremities, which were proved histologically, took neoadjuvant chemotherapy and completed our protocol. Their average age was 16.7 years(7 to 57). For neoadjuvant chemotherapy, 37 cases took high dose methotrexate(HDMTX)-adriamycin(ADR)-cisplatin(CDDP) regimen(HDMTX group) and 36 cases took ADR-CDDP(ADR-CDDP group). The average follow up was 17 months(2-63). According to Kaplan-Meier's plot, 5-year continuously disease free survival for whole 73 cases of neoadjuvant group was 45.2%, for HDMTX group 68.4%, for ADR-CDDP group 26.6%. There was significant stastical difference between these two groups(p<0.001), with log-rank test. There can be a different survival according to the chemotherapeutic protocols. Better results can be achieved through refined protocol and effective chemotherapeutic agents.

• The Journal of the Korean bone and joint tumor society
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• v.1 no.1
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• pp.30-37
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• 1995

The prognosis of parosteal osteosarcoma is better than any other malignant bone tumors, but there are many controversies in its treatment. We tried to evaluate the prognosis and the effectiveness of limb-salvage operation in the treatment of the parosteal osteosarcoma. We experienced 12 patients of conventional parosteal osteosarcoma(2 males and 10 females) from 1981 to 1991. The limb-salvage operations with wide resection margin were done in 8 patients(5 tumer prosthesis, 2 resection arthrodesis and 1 vascularized fibular transplantation), marginal en-bloc resection and amputation in 2 patients, respectively. The duration of mean follow up was 5 years and 9 months, ranging from 2 year-3 months to 11 years, except of the patient who died with metastasis 1 year 8 months after. The disease-free survival rate(DFSR) of all patients was 68% and that of the patients treated with limb-salvage operation was 88% at 7 years. The DFSR was 33% with marginal margin(3 cases) and 89% with wide margin(9 cases) at 7 years. The results were unsatisfactory in the conventional parosteal osteosarcoma treated with marginal resection. The limb-salvage operation with wide surgical margin was thought to be the treatment of choice.

• The Journal of the Korean bone and joint tumor society
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• v.1 no.1
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• pp.98-104
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• 1995

Between April 1982 and July 1991, 14 cases of squamous cell carcinoma of the extremities have been treated at the Department of Orthopedic Surgery, College of Medicine, Hanyang University. The diagnosis was made by clinical symptoms, history, tissue and lymph node biopsy. Age distribution was variable and the average age was 50.2 years old. The frequency was higher in male than female. The most common location arising the carcinoma was lower extremities. The most common etiology of carcinoma was chronic osteomyelitis, then chronic ulcers, burn scars in order. The average duration of illness was 22.8 years. The common clinical manifestations at the time of admission were chronic ulcer, growing mass, draining sinus in order. The choice of treatment consisted of early adequate amputation or radical resection of the focus and irradiation or chemotherapy.

• The Journal of the Korean bone and joint tumor society
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• v.2 no.1
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• pp.106-110
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• 1996

A subungual exostosis is an uncommon benign osteochondral lesion that appears as a painful nodule. Histologically, the tumors consist of a proliferating fibrocartilaginous cap that merged into mature trabecular bone at its base. From 1989 through 1991, 5 patients with subungual exostosis were treated. Three of them had exostosis on the great toe. There were three girls and two boys. The average age of the patients was 10.6 years. All of patients were treated by local excision. Two cases of our patients treated with an incomplete excision were recurred within 3 months after the original procedure. Lack of awareness of unusual lesion can cause initial misdiagnosis in many cases. We considered that a complete excision of the lesion is important for preventing the recurrence, and it should be confirmed with intraoperative radiographs.

• The Journal of the Korean bone and joint tumor society
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• v.2 no.1
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• pp.65-71
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• 1996

Twenty-nine cases of unicameral bone cyst developed in long bone of children have been treated and followed up for 4.5 years in average form Department of Orthopaedic Surgery, Guro Hospital, Korea University, College of Medicine since September, 1983, Treatment for those lesions differed to form largely two groups, one of which consised of insillation of Methyl-prednisolone for non-weight bearing bones(12 humeri) and the other of curettage and autogenous bone graft for weight-bearing bones(7 femur). Methl-prednisolone group required repetition of instillation for 3.5 time in average spanning over 4 years until cloudy obliteration occurs. Curettage and bone graft had healed in 3 year 6 months' time in average. There were neither recurrence nor pathologic fractures of the lesions with the latter group. Immobilization period was virtually non with Methyl-prednisolone group and 4-6 weeks by hip spica with curettage and bone graft group. As conclusions, It seems confirmed that treatment strategy of unicameral bone cyst consisted of Methyl-prednisolone instillation for humerus lesions and early curettage and bone graft for femur lesions is applicable as guideline having solid ground in clinical experiences.

• The Journal of the Korean bone and joint tumor society
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• v.2 no.1
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• pp.111-115
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• 1996

Benign osteoblastoma, a rare tumor which forms osteoid and woven bone, represents 3% of benign and 1% of all primary bone tumors. It can involve anywhere in the axial skeleton, which is most common in the spine (34%). But the lesion of the calcaneus is extremely rare. The ratio of males to females is 2:1, with 80 percent of the patients being under thirty years of age. Pain is the most common symptom and rarely pathologic fracture. Osteoblastoma is a benign tumor but has a high recurrence rate after intracapsular malignant change. Therefore, choice of surgical procedure is the 'enbloc' resection. Authors have experienced a case of osteoblastoma developed in calcaneus. The treatment was wide resection and triple arthrodesis. We have reported here the case in which osteoblastoma occured in calcaneus of the right foot.

• The Journal of the Korean bone and joint tumor society
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• v.5 no.1
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• pp.76-81
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• 1999

Aneurysmal bone cysts are uncommon bony lesions of the spine. Approximately 3-20% of the aneurysmal bone cysts occur in the spine, predominantly in the lumbar region, but they may occur at the any level of the spine. These lesions commonly arise from the neural arch and occasionally invade the pedicle and the vertebral body. The clinical diagnosis of a spinal lesion can be very difficult in the early stages of the disease because specific symptoms and signs are usually absent or only amount to back pain. However, depending on the level of involvement and the extent of neurological compression, a wide variety of neurological symptoms and signs may appear, ranging from mild radicular symptoms to complete paraplegia or tetraplegia. Available treatment options include complete excision or curettage of the lesion with bone graft, but where excision cannot be achieved, low dose radiation or arterial embolization may be used. We report a case of aneurysmal bone cyst in the pedicle of the T10 spine with nonstructural scoliosis of $40^{\circ}$ Cobb's angle which was treated successfully with only curettage of the lesion.

• The Journal of the Korean bone and joint tumor society
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• v.5 no.1
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• pp.82-85
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• 1999

A parosteal lipoma is a benign tumor containing mature adipose tissue and is intimately related to the adjacent periosteum. We experienced a very rare case of parosteal lipoma arising from the shaft of femur. A 46 years old lady visited the hospital with complaining of slowly growing mass in her thigh for 7 month. Initially, it was difficult to differentiate from osteochondroma, parosteal osteosarcoma or liposarcoma. Based on the assessment of plain radiogram and magnetic resonance imaging, it was suspected the parosteal lipoma or osteosarcoma. Marginal excision was performed, and it was confirmed to parosteal lipoma histologically. We present the case with review of literatures.