• Journal of Dental Rehabilitation and Applied Science
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• v.34 no.1
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• pp.46-55
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• 2018

Oral rehabilitation of a patient having severe periodontitis with alveolar bone resorption and periodontal inflammation presents a challenge to clinicians. However, if appropriate implant placement according to the bone shape is selected, unnecessary bone grafting or soft tissue surgery can be minimized. In recent years, using cone beam CT and software, it has become possible to operate the planned position with the surgical guide made with 3D printing technology. This case was a 70 years old female patient who required total extraction of teeth due to severe periodontitis and performed a full-mouth rehabilitation with an implant - supported fixed prosthesis. During the surgery, the implant was placed in a flapless manner through a surgical guide. Immediate loading of the temporary prosthesis made by CAD/CAM method before surgery was done. Since then, we have produced customized abutments and zirconia prostheses, and have reported satisfactory aesthetic and functional recovery.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.4 no.4
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• pp.236-241
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• 2011

Mechanical properties of cancellous bone with a high porosity and cortical bone with a high fraction of solid are estimated by the measurement of ultrasonic wave propagation. The speed of sound (SOS) in ultrasonic waves is usually measured by two equations, bulk wave equation and bar wave equation. Bulk wave speed has almost same as the fast wave of Biot's theory. In this study, we examine whether the bulk wave speed is influenced by the anisotropy of bone matrix. The SOS when the bone matrix is isotropy is 0.69% faster than that when the bone matrix is transversely isotropy. We also examine if the use of bar equation is adequate for a cortical bone. In the previous paper, the bar wave speed is a function of Young's modulus or elastic coefficient tensor. In the same manner, the effect of bar wave speed to isotropic and anisotropic bone is estimated.

• 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.9 no.1
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• pp.110-114
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• 2003

Chondromyxoid fibroma is a benign tumor in adolescents and young adults. The most common location of the tumor is the proximal one-third of the tibia. Chondromyxoid fibroma accounts for less then 1% of all bony neoplasms and foot is affected in about 20% of all cases. The authors have described a case of chondromyxoid fibroma of the first metatarsal which had been recurred 7 months after curettage and iliac bone graft. En bloc resection and reconstruction of the metatarsal with autogenous iliac bone graft were performed. The results were satisfactory and the patient was free of local recurrence at two years follow-up.

• The Journal of the Korean bone and joint tumor society
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• v.7 no.2
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• pp.59-63
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• 2001

Chondosarcoma of the calcaneus in young child is extremely rare. A thirteen-year old male patient has suffered from right heel pain for several months before. Dominant gross feature was hard mass and swelling on one entire right heel, and increased density and calcification on entire calcaneus with cortical destruction, and calcific densities on soft tissues around calcaneus were seen on roentgenogram of right ankle. It was diagnosed to be chondrosarcoma by bone biopsy. It was treated by below knee amputation and chemotherapy, and no recur and distant metastsis during 12 months after operation.

• Nuclear Medicine and Molecular Imaging
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• v.40 no.5
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• pp.275-278
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• 2006

We report the case of a 73-year-old man who had prostate cancer with bone metastases. Tc-99m HDP Whole body bone scan revealed multiple areas of increased bony uptake consistent with widespread bone metastases. F-18 fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT) demonstrated mild F-18 FDG uptake in the lymph nodes of neck, abdomen, and pelvis. However, abnormal F-18 FDG uptake was not seen in the skeletal system. Biopsy and immunohistochemical stains of left supraclavicular mass showed metastatic prostate adenocarcinoma. Currently, there are a few reported cases of F-18 FDG PET/CT evaluation of bone metastases in prostate cancer. We discuss the discrepancy between F-18 FDG PET/CT and bone scan in the detection of osseous metastases of prostate cancer.

• Food Science of Animal Resources
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• v.20 no.3
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• pp.236-241
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• 2000

본 연구는 한우우소뼈로 만든 용출액의 품질에 대한 과학적인 자료를 제시하고 한우뼈의 부가가치 향상 및 소비 확대를 위하여 추출횟수별에 따른 이화학적, 관능적 및 영양적 특성을 규명하였다. 탁도, 점도 및 콘드리이친황산함량에서 추출횟수가 증가할수록 유의적으로 감소한 반면(P<0.05), 콜라겐 함량에서는 추출회수가 증가할수록 유의적으로 증가하였다(P<0.05). 색도에서 명도는 추출회수가 증가할수록 유의적으로 감소한 반면, 적색도와황색도는 증가하였다(P<0.05) 관능평가에서 추출 회수가 증가할수록 평가가 유의적으로 낮았고 (P<0.05), 총질소, 나트륨, 칼슘 함량 및 칼로리는 추출회수가 증가할수록 2차추출까지 증가하다가 이후 유의적으로 감소하였다. (P<0.05)조직특성에서 추출전 대퇴골의 단면은 골수가 많이 분포하고 있으나 추출회수가 증가할수록 골수가 추출되어 3차 추출이후의 대퇴골 단면에는 골수 성분이 거의 나타나지 않았다. 이상의결과를 종합하여 볼 때 한우우소뼈로 설렁탕을 가정에서 제조시 3차까지 우려내는 것이 적당한 것으로 사료된다.

• Korean Journal of Cleft Lip And Palate
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• v.12 no.2
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• pp.57-64
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• 2009

전방으로 심하게 돌출된 전상악골로 인하여 구순성형술 및 비성형술의 결과가 악화 될 수 있다. 따라서 변위된 전상악골의 이상적인 위치로 재위치 시키려는 다양한 노력이 시도되어 왔다. 에디오피아와 같은 개발도상국에서는 어른이 되어서도 수술을 받지 못하는 구순구개열 환자가 많이 있다. 성인이 될 때까지 수술받지 못한 양측성 완전 구순구개열 환자에서는 근육, 골, 피부, 점막의 연속성이 없어서 전상악골이 심하게 전방으로 혹은 하방, 좌우측으로 변위된 경우가 대부분이다. 이 경우 구순성형술이 거의 불가능하며, 시도된다 할지라도 돌출된 전상악골 때문에 양쪽 구륜근을 봉합하여 주기가 대단히 어렵다. 따라서 이상적인 결과를 얻기 위해서는 구순성형술 전 혹은 동시에 전상악골의 재위치 술식이 필수적이다. 저자는 한국국제협력단에서 국제협력의사로 선발되어 에디오피아에서 30 개월간 근무하였다. 그 동안 다양한 양측성 완전 구순구개열 환자에서 전상악골의 재위치 술식을 경험하였다. 저자가 경험한 전상악골의 재위치 술식(전상악골의 재위치와 골이식술 동시 시행, 전상악골의 재위치와 구개열 성형술 동시시행)에 대하여 문헌고찰과 함께 보고하고자 한다.

• Archives of Reconstructive Microsurgery
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• v.12 no.1
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• pp.30-37
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• 2003

We used bipedicled scapular osteocutaneous free flap for total maxillectomy defect reconstruction in 3 cases of malignant maxillary tumor. We elevated two flaps of the skin paddle and the bone flap with one common pedicle - the subscapular artery - which was devided to the angular branch of the thoracodorsal artery and the circumflex scapular artery to reconstruct the nasal cavity, the palate and the zygoma. The angle between the two flaps was free enough so that we could transfer the two flaps through a single microanastomosis. After the operation, patients could swallow and pronounce well, and the wound contracture was minimal so that we could get aesthetically good result.

• Clinical and Experimental Pediatrics
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• v.49 no.2
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• pp.208-211
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• 2006

Dyke-Davidoff-Masson Syndrome (DDMS) is a rare condition characterized by asymmetry of cerebral hemispheric growth with atrophy on one side, ipsilateral compensatory osseous hypertrophy, and contralateral hemiparesis. We experienced a 17 month-old male who presented with left focal clonic or tonic-clonic seizures accompanied by left hemiparesis and developmental delay. Brain MRIs demonstrated progressive atrophy of the right cerebral hemisphere with dilatation of the lateral ventricle, expansion of the ipsilateral frontal sinus with calvarial thickening, and elevation of the petrous pyramid and orbital roof. Brain SPECT showed a decreased volume of the right hemisphere with reduced blood flow. We therefore report a case of DDMS with a review of the literature.