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원중희,김용민,서중배,최의성,이호승,고상욱,이건국,Won, Choong-Hee,Kim, Yong-Min,Seo, Joong-Bae,Choi, Eui-Seong,Lee, Ho-Seung,Ko, Sang-Wook,Lee, Geon-Kook 대한족부족관절학회 1998 대한족부족관절학회지 Vol.2 No.1
골격외 연골종은 수부와 족부에 드물게 발생하는 양성 종양으로 방사선학적 및 조직학적으로 연골 육종과 유사하여 감별 진단이 필요하며 국소 절제술로 치료가 가능하다. 저자들은 본원에서 64세 남자의 족저부에 발생한 골격외 연골종을 시험하였기에 문헌고찰과 함께 보고하는 바이다. 본 증례는 제술 후 12개월의 추시결과 재발의 소견은 없었고, 통증없이 정상적인 보행이 가능한 양호한 상태이다. There are various cartilagenous tumors which can be found within soft tissue. Among them, extraskeletal chondroma is benign and rare tumor that is most frequently found in the hands adjacent to periarticular tissues or tenosynovium of the hands. They can exhibit worrisome radiographic and histologic features that may mimic chondrosarcoma. We experienced a case of extraskeletal chondroma in plantar aspect of the foot occurred in a 64 year-old male patient. After investigation with MRI, the mass seemed to be benign. Excisional biopsy was performed, and the histologic outcome was an extraskeletal chondroma. Because this kind of tumor is rare and benign. we report this case with reviewing of the literatures.
원중희 ( Choong Hee Won ),김용민 ( Yong Min Kim ),최의성 ( Eui Sung Choi ),유진선 ( Jin Seon Yoo ),지종훈 ( Jong Hun Jee ) 대한고관절학회 1996 Hip and Pelvis Vol.8 No.2
The purpose of this study was to see the host-bone response to pure titanium fiber-metal surrounding titanium alloy core and rough-blasted titanium alloy(Ti-6AI-4V) implants placed in the medullary cavity of distal femur of rabbit. Each rod was implanted into medullary cavity of right distal femur through the knee. A total of thirty New Zealand rabbits were used. Fiber-metal rods were inserted into fifteen femurs and remaining fifteen were for rough blasted rods. The rabbits were sacrificed at one, two, four, six, and twelve weeks after operation and the specimens were studied histologically. Percentage implant perimeter surface length in contact with new bone were measured. Histomorphometric study showed excellent osseointegration onto rough-blasted titanium compared to that of fiber-metal titanium rod. When whole group means were compared, it was found that 36.5 per cent of perimeter of the rough blasted implants was covered with bone compared with 19.2 per cent of the perimeter of the fiber-metal coated implants. Peripheral bone formation and osseointegration was evident at one week after implantation and quantitative plateau was reached at four weeks. This study proved that nonporous-coated rough blasted titanium surface showed evident osseointe- gration which is not inferior to fiber-metal titanium surface. We have radiographic and clinical evidence that hip prostheses with rough-blasted titanium surface show osseointegration. The manufacturing cost of porous-coated prosthesis is high and the adverse effects of it are many. The use of rough-blasted surface may help to improve the functional outcome of total joint replacements and reduce the cost of arthroplasty.
원중희 ( Choong Hee Won ),최의성 ( Eui Seong Choi ),홍성선 ( Seong Sun Hong ) 대한류마티스학회 1999 대한류마티스학회지 Vol.6 No.3
Objectives: Bee venom contains a potent antiinflammatory peptide 401 as well as mellitin. The purpose of this study was to see the efficacy and safety of purified bee venom injection therapy for knee or spinal osteoarthritis patients. Methods: One hundred and one osteoarthritis patients were randomly assigned to bee venom injection therapy or oral nabumetone medication group. Bee venom injection group was subdivided into 3 groups according to different dosing schedule(group A: gradual increase up to 0.7mg, group B: up to 1.5mg and group C: up to 2.0mg). Control group patients(group D) were given 1000mg nabumetone daily for 6 weeks. There were 25, 26, 25, and 26 patients assigned to A, B, C, or D group. The efficacy of treatment was evaluated by measuring instruments developed by authors, and the safety of bee venom injection was evaluated by hematology and chemistry laboratory examination. Results: Among 101 patients, eighty-one patients completed the study, but twenty patients were dropped out and two of these patients were dropped out due to adverse drug reaction. The efficacy in bee venom group showed better improvement than nabumetone group(p<0.01). Within bee venom group, group B and C showed better improvement than group A(p<0.01). Itching around injection site occurred in most patients, and bodyache occurred in 49 patients(81.7%), Hemoglobin was decreased(0.3g/dl) in group C, but no significant changes were observed in other laboratory values. Conclusion: The efficacy of bee venom injection in the control of knee or back pain in osteoarthritis patients was better than nabumetone medication. No severe allergic or adverse reaction was observed in bee venom treatment patients, but problems related with bee venom injection, such as pruritis, bodyache, and the possibility of anaphylaxis, should be considered for the use of bee venom injection.
고관절 전치환술에서 하지 길이의 변화(수술전 예상 측정치와 수술후 실제 측정치 사이의 차이에 대하여)
원중희 ( Choong Hee Won ),장관환 ( Kwan Whan Chang ),신건 ( Geon Shin ),전경철 ( Kyung Chul Jeon ) 대한고관절학회 1994 Hip and Pelvis Vol.6 No.2
We reviewed 40 cases of cementless primary total hip arthroplasty (THA) to see the leg length changes after THA and analysed the factors that could affect the discrepancies of preoperative estimation and postoperative measurement. The cases with severe preoperative leg length discrepancy such as untreated CDH were not included in our series. Inserted femoral components were CLS(Protek) or Omnifit(Osteonics) stems. All the acetabular cups were HG g (Zimmer) cups. Preoperatively the acetabular template was mounted on the film and the center of the acetabular cup was marked with pencil. Femoral template was also mounted on the femoral side and the center of the femoral head was marked. The distaoce between the two centers was a basis for preoperative estimation. Postoperatively the leg length change was measured by the change of the distance from interteardrop line to the greater trochanter tip. Leg length change estimated by preoperative templating was 5mm lengthening in average. Postoperative leg length change was 10mm lengthening in average. The discrepancies of pre and postoperative measurement were attributed to following factors. Standardization of taking the X-ray views was an important factor. Magnification, center of X-ray beam and the accurate position of the hip should be considered in taking preoperative X-rays. Templating technique was another factor. Postoperative acetabular center shifted frequently compared with preoperative estimation. Templating does not always tell accurate postoperative leg length change. To minimize the discrepancy of pre and postoperative measurement above factors should be considered in preoperative estimation.
원중희 ( Choong Hee Won ),고영도 ( Young Do Koh ),신건 ( Geon Shin ) 대한고관절학회 1994 Hip and Pelvis Vol.6 No.1
We developed a guideline for the acetabular component positioning by bony acetabular rim. The hemispherical acetabular component should be implanted to achieve maximum containment within acetabular bone. This approximates when the uppermost lateral iliac rim of tbe component slightly protrudes beyond the bony edge(about 2mm), the ischial rim of the component irovercovered by ischial bony rim(4-6mm), and the pubic rim of the component is at the level of pubic bony rim. When the acetabular components were inserted into the cadaveric pelves according to that, the angle of inclination was 42 (range 33-46), and the angle of anteversion was 19 (range 8-28). Positioning the acetabular component by bony acetabular rim without any reference to gross patient position, produced fairly acceptable range of acetabular orientation. If the bony acetabulum is not distorted, or not deformed significantly, the normal bony acetabulum is the best guide for the acetabular component positioning.