• Journal of the Korean Arthroscopy Society
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• v.6 no.2
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• pp.188-191
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• 2002

The complication caused by a bioabsorbable interference screw composed of Poly-L-Lactic-Acid is rare after anterior cruciate ligament (ACL) reconstruction. We reported a case of a pretibial ganglion at the orifice of the tibial tunnel where the graft tendon had been fixed with a bioabsorbable interference screw $(Bioscrew^{\circledR})$ for ACL reconstruction using autogenous hamstring tendon. The patient was underwent ganglion excision and interference screw removal.

• Journal of the Korean Arthroscopy Society
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• v.9 no.2
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• pp.143-147
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• 2005

Purpose: In case of anterior cruciate ligament (ACL) reconstruction, graft tendon is generally fixed in tibial tunnel with knee extended. When reconstructing ACL using hamstring tendon, the authors aim to find out the effect of knee joint position during graft fixation on postoperative knee joint stability and range of motion. Materials and Methods: Prospective study was done on patients who have undergone ACL reconstruction using hamstring tendon from May 2002 to January 2003 We used Rigifix system (Mitek Product, Johnson and Johnson, USA) and Intrafix system for fixation. Thirty nine patients received ACL reconstruction during this period. Excluding 2 patients lost in the follow-up, 37 patients were analyzed. The mean follow-up period was 14 months $(13{\sim}25months)$. Knee position was decided alternatively without any bias. Clinical evaluation was based on Lachman test, pivot shift test, Lysholm score, IKDC(international knee documentation committee) assessment and side to side KT-1000 maximal manual arthrometer difference. Results: After the last follow-up, average postoperative Lysholm score was 93.1 poins(65-98points). According to IKDC score, 26 cases were normal, 10 cases were nearly normal, 1 case was abnormal and we had no case of severe abnormality. The mean difference from the normal side was 2.5 mm under maximal manual loading KT-1000 arthrometer. According to postoperative Lachman test, 32 cases were normal,2 cases were grade I and 1 case was grade II. There were 34 cases of normal, 2 cases of grade I and 1 case of grade II. When using maximal manual KT-1000 arthrometer side to side difference, the difference from the normal side while fixing the tibia at 20'knee flexion was 2.3 mm and at full extention the difference was 2.7 mm. The range of motion at postoperative 1 year showed 5 degree flexion contracture in 1 case at 20 degrees knee flexion and 10 degrees of flexion limitation was observed in 2 cases at full extension. Conclusion: When ACL reconstruction using autogenous hamstring tendon, anterior laxity showed no difference in its stability between two groups. Tibial side fixation at full extension may be helpful in preventing flexion contracture due to overconstrained graft tendon.

• Journal of the Korean Arthroscopy Society
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• v.7 no.2
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• pp.183-188
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• 2003

Purpose : The purpose of this study is to evaluate the results of revision surgery for failed anterior cruciate ligament (ACL) reconstruction using quadruple hamstring tendon autograft. Materials and Methods : From May 2000 to July 2002, six patients received ACL revision surgery using quadruple hamstring autograft for failed ACL reconstruction. Femoral tunnels were made 40 mm in depth and fixed with a cross pin and a bioabsorbable interference screw to fill the bone defect. In tibial tunnels, the grafts were fixed with Intrafix(Mitek, Norwood, MA). In case of tibial tunnel widening, additional screw-washer fixation was done. Follow up was at least 12 months postoperatively. Clinical assessments consisted of Lysholm knee scores, International Knee Documentation Committee(IKDC) evaluation form and manual maximal side to side difference using KT-2000 arthrometer. Results : The average Lysholm knee score improved from 77.2 preoperatively to 87.7 postoperatively. At the final IKDC evaluation, 1 case was graded as normal, 4 nearly normal, 1 abnormal. Mean side to side difference of manual maximum anterior displacement using the KT-2000 arthrometer was 1.8mm. The success rate was $83\%$. Conclusion : ACL revision surgery using quadruple hamstring autograft with double fixation is considered good procedure with successful results.

• Journal of the Korean Arthroscopy Society
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• v.10 no.2
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• pp.159-164
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• 2006

Purpose: To evaluate the clinical stability and function after one-stage revision anterior cruciate ligament (ACL) reconstruction using fresh-frozen Achilles tendon allograft Materials and Methods: Thirteen patients who underwent one-stage revision ACL reconstruction using Achilles tendon allograft could be evaluated. The average time from primary procedure to revision surgery was 61.8 months. The mean follow-up period was 38.4 months. The bone defects of pre-constructed femoral and tibial tunnels were filled with calcaneal bone attached to Achilles tendon and the new femoral and tibial tunnels were created. Evaluations included the causes of failure of primary ACL reconstruction, Lysholm knee score, Lachman test, pivot shift test and KT-1000 arthrometer measurement. Results: The most common causes of failure of ACL reconstruction were poor surgical techniques in 10 cases (76.9%). Ten patients (76.9%) were good or excellent on the Lysholm score. Twelve patients (92.3%) had negative or 1+firm end Lachman test. Eleven patients (84.6%) had negative pivot shift test. Nine patients (69.2%) had less than 3 mm difference of manual maximum by KT-1000 arthrometer. Conclusion: One-stage revision ACL reconstruction with fresh-frozen Achilles tendon allograft, creating new tunnels after filling bone defects, resulted in a reliable and predictable outcome in terms of stability.

• Korean Journal of Heritage: History & Science
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• v.45 no.4
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• pp.4-21
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• 2012

Jade ornaments, which include slit earrings, scoop-shaped objects and tubular beads have been extensively identified in Northeast Asia, such as Korea, China, Japan and the Maritime Province of Siberia. Among them slit earrings are distributed in the whole area of Northeast Asia. Although this object shows the typological differences in accordance with the excavated region in detail, all of them are characterised by the slit on the centre of jade ring. The buried context and the shape of this object suggest that this artefact was the earring; thus it is named to 'slit earring'. Most of slit earrings of the Neolithic Age concentrate in Northeast China and the areas south of the Yangtze River, and the Japanese Archipelago. However, unfortunately, Slit earrings, which were produced in the tradition of the incipient and early phases of the Neolithic Age in Northeast Asia, have not been excavated in the Korean Peninsula. The number of slit earrings reported so far is eight, and especially until the 20th century, almost none was reported with its exact excavation location and only three of them are known as excavated through surface surveys and preliminary excavations. However, from the beginning of the 21st century onwards, the number of discovered slit earrings is increasing. Particularly, five pieces of this object uncovered in the 21st century are discovered in the official excavation; thus the exact archaeological context such as buried locations and chronologies could be estimated. By considering the buried context, slit earrings are associated with stone axes, which were produced in the incipient and early phase of the Neolithic Age in the Korean Peninsula. In addition, considering the number of unearthed objects is a few, it could be postulate that slit earring was the artefact that only a few persons, who had a special role in the society, could possess. However, slit jade earrings that have been excavated in the Korean Peninsula are extremely low in their number compared to the cases of its neighbouring countries such as China and Japan, and the researches on this subject have not been much conducted in Korea. Therefore, it is my supposition that slit earrings, which have been discovered in the Korean Peninsula, might be the imported item from the nearby areas. Particularly, the Southern Coast was closely connected with Japanese Islands and the Eastern Coast was interchanged with Northeast China or the Maritime Province of Siberia. Considering that excavations and researches on the Neolithic remains in the Korean Peninsula have not been sufficiently and actively conducted, it could be expected that the further investigations and researches will reveal the sufficient quantities of slit earrings in near future.

• Journal of the Korean Arthroscopy Society
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• v.12 no.2
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• pp.139-146
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• 2008

Purpose: The purpose of this study is to introduce the double bundle posterior cruciate ligament(PCL) reconstruction using Achilles allograft by the tibial inlay method and evaluate the clinical results of 11 cases who had PCL reconstruction using this method and were followed for more than 2 years after surgery. Materials and Methods: Our series consists of 11 cases of PCL reconstruction due to chronic posterior instability of knee and acute PCL rupture. The clinical results were assessed using the IKDC(International Knee Documentation Committee) scoring system, posterior stress radiographs and the maximum posterior displacement using a KT-1000TM arthrometer. Results: The average preoperative posterior displacement in 90 degree flexion stress radiograph was measured 13.4 mm and in 10 degree flexion the average posterior displacement using the KT-1000TM arthrometer was measured 11.4 mm. Postoperatively the 13.4 mm reduced to 4.4 mm and the 11.4 mm reduced to 3.9 mm. According to IKDC scoring system, 9 cases(81.8%) were satisfied. One case showed limitation of flexion with mild stiffness in the knee and another one case was not improved the posterior instability sufficiently and no complication of allograft was noticed. Conclusion: The double bundle PCL reconstruction using Achilles allograft by the tibial inlay method is a useful method for acute PCL rupture and chronic posterior instability of the knee including failed PCL reconstruction, because it will also make the posterior stability in the extension and 90 degree flexion position, and avoid the grafted tendon abrasion by acute turn of tibial tunnel.

• Journal of the Korean Arthroscopy Society
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• v.9 no.2
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• pp.132-136
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• 2005

Purpose: The purpose of this study was to compare the clinical results of the arthroscopic anterior cruciate ligament reconstruction used by Bone-Patella tendon-Bone autograft and Achilles tendon allograft. Materials and Methods: We reviewed the results of patients who had been managed with arthroscopic anterior cruciate ligament reconstruction using different graft such as Bone-Patella tendon-Bone autograft and Achilles les tendon allograft. 60patients (average age, 33.5 years)were retrospectively evaluated. The one group(average age, 33.4 years) was 32 patient who had been managed with arthroscopic anterior cruciate ligament reconstruction using Bone-Patella tendon-Bone autograft. The other group(average age, 32.1 years) was 28 patient who had been managed with arthroscopic anterior cruciate ligament reconstruction using Achilles tendon allograft. 2 groups were evaluated subjectively by Lysholm knee scoring scale and objectively by KT-2000 arthrometer. The follow-up period was more than a year(average, 18 month). An early rehabilitation protocol was instituted. Results: On Lysholm knee scoring scale, the final evaluation was nearly normal in all patients. We could not find statistical difference among the two groups by KT-2000TM arthrometer. Conclusion: The use of allografts may be an acceptable choice for ACL reconstruction.

• Journal of Korean Orthopaedic Sports Medicine
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• v.10 no.2
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• pp.47-53
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• 2011

Purpose: As the number of the anterior cruciate ligament (ACL) reconstruction has increased, the incidence of revision of ACL reconstruction due to reconstruction failure has been also increased. Therefore, authors analyzed the reason of the failure of ACL reconstruction and the clinical result of the ACL revision. Materials and methods: From February 1998 to July 2010, we selected 36 cases which was followed at least 12months after the ACL reconstruction failure. Duration from reconstruction to revision, the average duration was 60 months (5~334) and on first reconstruction, we used allograft on 23 cases (63.9%) and autograft on 13 cases (36.1%). For the main symptom of ACL reconstruction failure, instability was the most common symptom, and 35 cases (97.5%) were undergone only one reconstruction and 1case (2.5%) was undergone two reconstruction. Clinical results were evaluated by Lysholm knee joint score, pivot shift test, and Telos device. Results: Average follow-up duration of the patients was 21 months (12~40), and the reason for the ACL reconstruction failure, trauma was most common by 19 cases (52.8%), malposition of the femoral tunnel was 13 cases (36.1%), malposition of the tibia tunnel was 1case (2.8%), and failure of osteointegration was 3 cases (8.4%). On performing the ACL revision, we used allograft on 34 cases (94%) and autograft on 2 cases (6%), and 21 cases accompanied injury of the meniscus (medial meniscus 14 cases, lateral meniscus 7 cases). Lysholm knee joint score was improved from 66.5 points, preoperatively to 92 points on last follow-up (p<0.01). In most cases, patients were satisfied (92%) with the operation results. Tegner activity score was also improved from 2.0 points preoperatively to 6.2 points on the last follow-up. On Lachman and pivot sift test, 33 cases and 30 cases were improved to grade I respectively, and on stability test using Telos device, the bilateral difference was improved from mean 15.5 mm preoperatively to 4.5 mm on the last follow-up. Conclusion: After 1 year follow-up, Revision of ACL had a little anterior instability but it showed satisfactory result on clinical result and patient's subjective satisfaction.

• Journal of the Korean Arthroscopy Society
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• v.4 no.1
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• pp.1-6
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• 2000

Purpose : The purpose of this study was to compare the results of ACL reconstruction using bone-patellar tendon-bone to hamstring. Materials and Methods : Thirty-two ACL reconstructions with autogenous BPTB and eighteen reconstructions with hamstring were compared in terms of functional outcome, stability and tunnel expansion. Results : The functional score of BPTB group was higher than hamstring group in OAK(Orthopadishe Arbeitsguppe Knie) and IKDC(International Knee Documentation Committee) system. In BPTB group, OAK scores were 71.6$({\pm}10.0)$ preoperatively and 88.5$({\pm}7.9)$ finally. In hamstring group, OAK scores were 73.9$({\pm}11.5)$ and 82.5$({\pm}12.9)$ respectively. There was no difference in stability checked by either $KT-1000^{TM}$ or stress view. Anterior tibial translation measured by $KT-1000^{TM}$ were 2.4$({\pm}1.8)$mm in BPTB and 2.3$({\pm}2.4)$mm in hamstring group. Anterior tibial translation in stress view were 2.8$({\pm}3.4)$mm in BPTB and 2.8$({\pm}2.5)$mm in hamstring group. There was no difference in tibial tunnel expansion but femoral tunnel was more enlarged in hamstring group than BPTB (P=0.03). Conclusion : As there was no difference in stability between two groups, it seems prudent to select either graft defend on such factors as anterior knee pain, skeletal maturity and cosmetic concern. Tunnel expansion seems not to affect stability, but further study is needed to confirm that decrease of which might improve stability.

• 나누는사람들
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• s.38
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• pp.20-21
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• 2007

중국조혈모세포은행(CMDP)은 1992년 창립 이후 중국 홍십자회의 관리 하에 운영되어지고 있으며 기증희망자들의 모집, HLA(조직적합성항원형) 데이터입력, 예비검색, 이식등의 일을하고있다. 전문병원과 HLA검사연구실의 전문가들로 구성되어진 위원회는 중국조혈모세포은행의 발전에 중요한 역할을 하고 있다. 중국조혈모세포은행의 예산은 주로 국영자선복권의 기금과 사회적인 도움으로 이뤄진다. 중국조혈모세포은행은 경영팀, 기증자업무팀, 과학기술팀, 교육팀 등 총 4개의 팀으로 구성되어있다. 2007년 1월말 기준 전국에 30개의 기증희망자등록지부와 25개의 HLA검사실 및 정도 관리 검사실을 가지고 있고, 50만 명 이상의 기증희망자가 등록되어 있으며, 1996년 국내 최초 비혈연 조혈모세포이식 후 583건의 이식을 하였다.