• Clinics in Shoulder and Elbow
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• 제17권1호
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• pp.36-39
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• 2014

Clavicular hook plate is known to be an effective treatment on acromioclavicular (AC) joint injury, but there have been some reports of complications, like osteolysis and bony erosion of the undersurface of acromion. Fifty-five year old male underwent open reduction and hook plate insertion on Rockwood type 5 acromioclavicular joint dislocation. He complained of protrusion of posterior acromion at 1 month after the surgery, and acromial fracture was noted in simple radiographs. The hook plate was removed and any other treatment for osteosynthesis was refused by the patient. At the 18 months after the surgery, the patient had no pain and a full range of motion with no tenderness around the shoulder joint. After two years, plain radiographs revealed complete bony union of the acromion fracture.

• 한국임상수의학회지
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• 제19권4호
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• pp.443-446
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• 2002

A primary metastatic malignant plasma cell tumor was presented in a 7-year-old, female, mixed breed dog. The dog was admitted to Veterinary Teaching Hospital at College of Veterinary Medicine, Seoul National University after suffering from depression, anorexia, and dyspnea. The dog was euthanized due to poor prognosis. At necropsy, numerous, firm and tan round nodules, 1 to 2 cm in diameter were noted in the ribs. The nodules formed chain or were occasionally coalescing, causing osteolysis of the ribs. A large amount of clear fluid was present in the thoracic cavity. The spleen and liver were markedly enlarged and congested. Histologically, the nodular masses were diagnosed as plasma cell tumor which was believed to be originated from the rib. Evidence of metastasis was observed in the spleen, liver, and kidney.

• 대한수의학회지
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• 제61권4호
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• pp.31.1-31.4
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• 2021

A 15-year-old Schnauzer, showing right exophthalmos, was diagnosed as adenocarcinoma originated from the third eyelid gland. On computed tomography, a normal right third eyelid gland was not observed. Instead, a heterogeneous cystic mass invaded the retrobulbar space and displaced the eye globe dorsolaterally. In addition, lysis of the bony nasolacrimal duct was found, which was considered the tumor invasion. These findings indicated that third eyelid gland adenocarcinoma should be considered when a retrobulbar mass is found ventromedial to the globe without observation of the normal third eyelid and accompanies osteolysis of the bony nasolacrimal duct in dogs showing exophthalmos.

• 대한족부족관절학회지
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• 제26권4호
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• pp.157-162
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• 2022

Total ankle arthroplasty has become a viable motion-preserving alternative to ankle arthrodesis, especially in the last two decades. Recent improvements have been achieved in the strength of implant design and surgical technique. Nevertheless, addressing preoperative deformities is essential for successful outcomes of total ankle arthroplasty. Residual malalignment can produce instability and edge loading, causing acceleration of polyethylene wear, followed by osteolysis and an increased risk of revision surgery. Therefore, the accompanying deformities and their correction techniques need to be comprehensively elucidated and understood. In this article, we provide a review of the application of total ankle arthroplasty in arthritis with coronal plane varus and valgus deformities.

• 대한영상의학회지
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• 제85권1호
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• pp.36-53
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• 2024

척추 수술의 빈도 증가와 더불어 radiography, CT, MRI 등의 의료 영상 촬영 건수도 증가하고 있으며, 이와 관련된 영상 판독의 중요성이 점점 더 커지고 있다. 본 논문에서는 척추 수술 후 발생 가능한 다양한 합병증을 이해하고, 이를 정확하고 효과적으로 진단하는 영상 검사의 중요 소견에 대해 다루고자 한다. 특히, 수술 후 초기 및 중장기 합병증을 구분하여, 각 시기별 특징적인 영상 소견을 자세히 설명한다. 척추 수술 후 초기 합병증으로는 부적절한 수술 기구 배치(instrument malposition), 장액종(seroma), 혈종(hematoma), 거짓수막류(pseudomeningocele), 수술 주변 감염(infection) 등이 있으며, 중장기 합병증으로는 수술 기구 주변의 골용해(osteolysis), 융합 실패(failure of fusion), 인접 분절 질환(adjacent segment disease), 경막외 섬유화 또는 흉터 조직(epidural fibrosis or scar) 형성 등이 포함된다. 이러한 척수 수술 후 발생하는 합병증 관련 영상 평가에 대한 정확한 이해는 척추 수술 후 합병증을 적시에 정확하게 진단하여 효과적인 환자 치료에 기여할 것이다.

• 대한의생명과학회지
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• 제19권2호
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• pp.164-167
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• 2013

Osteoclasts are originated from hemopoietic progenitors of the monocyte/macrophage lineage and resorb mineralized tissues. Elevated osteoclast numbers and activity result in bone disease such as osteoporosis, Paget's disease, and tumor osteolysis. In order to identify the genes that are involved in osteoclast differentiation, microarray was performed after treated with RANKL for 12 h and 24 h in osteoclast precursors. The genes that changed by RANKL treatment were grouped by biological process or molecular function. Among them, the number of genes involved in signal transduction and nucleic acid binding was 6065 and 3066, respectively. When analyzed the number of genes changed more than 1.5 fold in the cells treated with RANKL for 12 h or 24 h compared to when RANKL was not treated, 83 and 62 genes were up-regulated; 56 and 62 genes were downregulated, respectively. To verify the microarray results, real-time RT-PCR for Cxcl1 and Slfn1genes that have not been reported yet related to osteoclast differentiation, as well as Ccl2 gene associated with osteoclast differentiation were carried out. Both experiments showed a similar result of more than 1.5 fold induction of these genes by RANKL treatment. These results suggest the possibility that Cxcl1 and Slfn1 may associate with osteoclastogenesis and provide that microarray is a useful tool to analyze the profile of genes changed during osteoclast differentiation by RANKL. Moreover, this gene profile contributes to understand the regulatory mechanisms involved in osteoclast differentiation and the pathogenesis, thus developing therapeutics of bone diseases such as osteoporosis.

• Journal of Korean Neurosurgical Society
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• 제30권11호
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• pp.1336-1339
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• 2001

Mesenchymal chondrosarcoma is a rare tumor occurring in both bone and soft tissues and exhibits characteristic of a malignant nature. The authors experienced a case of mesenchymal chondrosarcoma occurring in a 23-year-old woman which had invaded the cervical spine. The patient presented with severe both shoulder pain, left upper extremity weakness(Grade IV) and paresthesia at admission. Radiologic studies of the cervial spine showed an aggressive osteolysis of C4 vertebral body, pedicle and lamina with compression of the spinal cord posteriorly on C3, C4, C5 levels. The tumor was totally removed by a combined anterior and posterior approach. The removed vertebral body was replaced with autogenous bone and stabilized by Codman locking plate symtem. The pathological examination showed characteristic of mesenchymal chondrosarcoma.previous symptoms well improved postoperatively. The authors present a case of mesenchymal chondrosarcoma with review of literature.

• 대한족부족관절학회지
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• 제11권1호
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• pp.111-114
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• 2007

Open calcaneal fracture with more than lateral half of bone loss and soft tissue defect occurred in 17 year-old male patient due to motor vehicle accident. Soft tissue defect included heel pad, peroneal tendon. Bone loss involved mainly most part of inferior tuberosity but not subtalar joint. Open dressing and debridement were done daily in operating room and antibiotics administration was started. After granulation tissue formed, femoral head allograft was performed and fixed with 6.0 mm screws to replace bone defect. Soft tissue defect was covered with latissimus dorsi musculocutaneous free flap. No sign of infection nor major osteolysis was observed in 15 months follow up period. Soft tissue defect was covered with latissimus dorsi musculocutaneous free flap.

• Clinics in Shoulder and Elbow
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• 제5권2호
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• pp.73-80
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• 2002

Purpose: Weight lifting is a good training to control body weight, to correct body shape and to relieve stress. How-ever if the training is continued by inadequate training method and technique, the risks of the shoulder injuries are relatively high. Main Subject: The rotator cuff injury is the most common disorder to wright lifters and often results from the train- ing program of upright row, military press and pectoral deck. The chances of subacromial impingement in these postures are high because the shoulder rotates under the acromion at 90 abduction state. Shoulder instability in weight lifters can develop due to various causes. aepeated microtrauma and excessive abduction and external rotation may result in laxity of the anterior capsular structure, ligament and muscles. Behind the neck and bench press are high risk training postures. Other than those injuries, idiopathic osteolysis of distal clavicle, acromioclavicular separation, pectoralis major muscle rupture, and triceps muscle rupture nay develop. Conclusion: The best treatment option of the shoulder injury to weight lifters is to eliminate the possible risk elements for the weight lifters in training program and to provide proper and prompt treatment as soon as possible.

• 대한족부족관절학회지
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• 제9권1호
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• pp.59-63
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• 2005

Purpose: To present the procedure and results of dorsal wedge osteotomy fixated by bioabsorbable polyglycolide pins for the treatment of symptomatic Freiberg's disease. Materials and Methods: From January 1997 to December 2002, six patients with Freiberg's disease underwent dorsal wedge osteotomy of the metatarsal neck to bring the healthy plantar part of the metatarsal head into articulation. Bioabsorbable polyglycolide pins were used for the fixation and short-leg walking cast was applied for 4 weeks. Results: All patients returned to full daily activities without pain in three months after the operation. Radiographically, solid healing of the osteotomy was observed at average ten weeks. The active range of motion of the metatarsophalangeal joint increased by a mean gain of 30 degrees, and no complication such as displacement, osteolysis or sinus formation was observed. Conclusion: Dorsal wedge osteotomy fixated by bioabsorbable pins for patients with symptomatic Freiberg's disease is effective procedure that provides relatively early range of motion exercise and avoids second procedure for implant removal.