• The Journal of the Korean bone and joint tumor society
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• v.15 no.1
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• pp.81-86
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• 2009

An extraskeletal osteosarcoma is a rare malignancy. A small number of cases and studies have been reported in the world and only two cases have been reported in Korea. We experienced an extraskeletal osteosarcoma around the knee joint of 91-year-old male who was the oldest case in the literatures. It was developed without history of trauma, irradiation, myositis ossificans, and heterotopic ossification of dermatomyositis. This patient was treated with excision alone, however he was alive and there were no sign of local recurrence or distant metastasis and functional loss during 1-year follow-up.

• Journal of Korean Orthopaedic Sports Medicine
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• v.2 no.2
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• pp.127-135
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• 2003

The motions used in throwing place tremendous stresses on the soft tissues about the player's shoulder. In order to throw successfully, the shoulder complex must be capable of excessive motion, while maintaining stability of the glenohumeral joint. Injuries to the throwing player can result from acute trauma, but more commonly can be a result of overuse injuries from the repetitive throwing activity. Inbalance in the muscles and soft tissue about the shoulder can result in an injury secondary to abnormal biomechanics of the glenohumeral complex. The preventive measure a throwing player can take in order to maintain a healthy throwing shoulder is to participate in a regular shoulder strengthening program. It is when the muscles about the shoulder become imbalanced, secondary to either injury or relative weakness, that instability and injury can occur. By understanding the pitching motion and the relative contribution of the muscles, the treating physician has a framework on which to build knowledge regarding physical findings and diagnosis of shoulder injuries in throwing players. Once a diagnosis is made. a successful treatment plan may be developed for the player, including both conservative and , at time surgical means.

• The Journal of Korean Physical Therapy
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• v.10 no.2
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• pp.149-159
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• 1998

Normal lumbar vertebrae function only when soft tissues are in position, constituting vertebral body, discs and facet feints. Considering the mechanism of supporting bodily weight, the widest movement of vertebral column reaches a lumbar sacral joint to cause structural changes. The feet is proved that lumbago is the damage of lumbar vertebrae accompanied with the change of soft tissues surrounding lumbar vertebrae, rather than simple pain in a certain lesion. It is based on the mechanism of vertebral body and intervertebral discs in the anatomical structure of the lumbar region. In my opinion, it is necessary to prove more accurately the cause of lumbago, escaping from the conventional cause of the abnormality of disc.

• Journal of Yeungnam Medical Science
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• v.20 no.2
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• pp.223-228
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• 2003

Calcifying aponeurotic fibroma is a rare benign soft tissue tumor that usually involves distal extremities in children and adolescents, especially the hands and feet. We report a case of calcifying aponeurotic fibroma arising in a 14-year-old boy who complained of right thumb mass. Surgical excision was performed. The resected specimen showed a $2.0{\times}1.5cm$ grayish white, fibrotic tissue. Histologic examination showed proliferation of fibroblastic cells with infiltrative growth pattern. Foci of calcification and chondroid differentiation were present.

• Journal of Korean Orthopaedic Sports Medicine
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• v.10 no.2
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• pp.105-108
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• 2011

Extra-skeletal chondroma, characterized by its lack of connection with the adjacent bone, includes synovial chondromatosis, intra-articular and para-articular chondroma, and soft tissue chondroma. Among them, the last two lesions are extremely rare. This is the case about 20-year-old soldier, who had complained of tenderness of the knee, pain and fullness during knee flexion and limitation of motion after a hard military training. We found a mass in the x-ray and MRI and resect the mass surgically, which was a $5.5{\times}4{\times}3$ cm size hard solitary mass. On microscopic finding, it was consisted of lobulated hyaline cartilage and outer fibrous capsule, and we ascertained it as para-articular chondroma. We experienced a case of para-articular chondroma in the infrapatellar fat pad of the knee joint and present its clinical, radiologic and pathologic findings with literature review.

• The Journal of Korean Orthopaedic Ultrasound Society
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• v.3 no.1
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• pp.38-46
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• 2010

The lesions around hip joint including bone, joint and soft tissue can cause the pain. For diagnosis of these lesions, physical examination and simple X-ray were accomplished primarily. Some special cases, CT or MRI was a useful tool. However ultrasonography could provide non-invasive and dynamic images for the lesions of tendon and bursa, and it could be a useful tool for follow up after hip surgery. Due to the deep location of hip joint, ultrasonography is not easy for physician to examine and its application was impossible in some obese patients. This article deals with the normal and pathologic ultrasonographic findings of the hip joint and various applications using ultrasonography.

• Journal of the Korean Orthopaedic Association
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• v.54 no.1
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• pp.37-44
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• 2019

Purpose: Tumor infiltration around the knee joint or skip metastasis, repeated infection sequelae after tumor prosthesis implantation, regional recurrence, and mechanical failure of the megaprosthesis might require combined distal femur and proximal tibia replacement (CFTR). Among the aforementioned situations, there are few reports on the indication, complications, and implant survival of CFTR in temporarily arthrodesed patients who had a massive bony defect on either side of the knee joint to control infection. Materials and Methods: Thirty-four CFTR patients were reviewed retrospectively and 13 temporary arthrodesed cases switched to CFTR were extracted. All 13 cases had undergone a massive bony resection on either side of the knee joint and temporary arthrodesis state to control the repeated infection. This paper describes the diagnosis, tumor location, number of operations until CFTR, duration from the index operation to CFTR, survival of CFTR, complications, and Musculoskeletal Tumor Society (MSTS) score. Results: According to Kaplan-Meier plot, the 5- and 10-year survival of CFTR was 69.0%±12.8%, 46.0%±20.7%, respectively. Six (46.2%) of the 13 cases had major complications. Three cases underwent removal of the prosthesis and were converted to arthrodesis due to infection. Two cases underwent partial change of the implant due to loosening and periprosthetic fracture. The remaining case with a deep infection was resolved after extensive debridement. At the final follow-up, the average MSTS score of 10 cases with CFTR was 24.6 (21-27). In contrast, the MSTS score of 3 arthrodesis cases with failed CFTR was 12.3 (12-13). The average range of motion of the 10 CFTR cases was 67° (0°-100°). The mean extension lag of 10 cases was 48° (20°-80°). Conclusion: Although the complication rates is substantial, conversion of an arthrodesed knee to a mobile joint using CFTR in a patient who had a massive bony defect on either side of the knee joint to control infection should be considered. The patient's functional outcome was different from the arthrodesed one. For successful conversion to a mobile joint, thorough the eradication of scar tissue and creating sufficient space for the tumor prosthesis to flex the knee joint up to 60° to 70° without soft tissue tension.

• Journal of Korean Foot and Ankle Society
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• v.18 no.4
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• pp.222-226
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• 2014

Four patients with soft tissue defects around the ankle joint were covered with peroneal artery perforator-based propeller flaps. Using color Doppler sonography, the flap was designed by considering the location of the perforator and soft tissue defects. The procedure was then performed by rotating the flap by $180^{\circ}$. Additional skin graft was required in a patient due to partial necrosis, and delayed wound repair was performed in another patient with poor blood circulation at the distal part of the flap. The remaining patients did not have any complications and results were considered excellent. Good outcomes were eventually obtained for all patients.

• Journal of the Korean Arthroscopy Society
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• v.17 no.1
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• pp.61-65
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• 2013

Tophaceous gout, which is usually presented in the synovial fluid, bursal lining, cartilage or other soft tissues, may cause a nonoutlet impingement in the rotator cuff and bursa. In chronic tophaceous gout patient with the shoulder pain, a surgeon should consider the possibility of the tophaceous gout of the rotator cuff. We report a surgical experience of a 50-year-old man with tophaceous gout of the rotator cuff causing impingement syndrome. The patient was treated successfully with arthroscopic debridement and subacromial decompression.

• Journal of the Korean Arthroscopy Society
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• v.13 no.2
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• pp.174-178
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• 2009

Purpose: We introduce arthroscopic assisted core decompression for humeral head osteonecrosis. Operative technique: After diagnostic shoulder arthroscopy is performed using posterior and anterior portal, we make a 2 cm lateral skin incision approximately 3 cm distal to 1/3 of lateral margin of the acromion and place short gray cannula to prevent adjacent soft tissue injury when insert guide pin. Under C-arm fluoroscopic and arthroscopic guidance, 3 to 4 guide pins are inserted toward the necrotic area. Then we perform drilling using 7.0 mm reamer. Conclusion: We believe this technique is a less invasive approach and avoids the complications comparing to deltopectoral approach. Arthroscopic assisted core decompression is an effective procedure in management of early stage of the humeral head osteonecoris.