Since surgical bone banks were set up at several university hospitals in early 1970s, the number of allograft is getting increased in Korean society. Most orthopedic surgeons have used allografts supplied by their own surgical bone banks for tumor reconstruction, arthroplasty, and ligament reconstruction. In 2000, a nation-wide survey for surgical bone banks was performed by Korean orthopedic Association. The questionnaires were prepared by the Committee on Tissue Bank in the Association, and sent to 110 university and training hospitals. Fifty-six surgical bone banks were encountered. However, facilities of the banks were not updated. Most of them were using one or two deep freezers only. Most of them do not have a full-time technician. While most bone banks were using surgically excised femoral heads and amputated limbs, some banks retrieved the tissues from cadaver or organ donors. Since the law for organ transplantation from brain death was established in February 2000, the number of allograft transplantation is growing tremendously. In order to secure the safety of allograft transplantation, the enactment of "the Law for Tissue Transplantation" is mandatory. Unlike organs, the tissues can be procured and stored in advance and can be used whenever they are needed by establishing and operating a form of tissue bank. Therefore, since it is difficult to regulate or supervise tissue banking by "the Law on the Organs and Transplantation", the enactment of a separate law is highly recommended. The government should set the certification standards for the bone and tissue banks suitable for the domestic circumstances. The request of certification of bone and tissue banks should be obtained by the banks that are currently in operation. Also, actual inspection team should be organized involving the professionals and public officers. This team will be responsible for audit of the banks. The certified bone and tissue banks should renew by paper review or actual inspection every 2~3 years. For safe and smooth operation of the banks, the licence system for certified tissue bank specialist(CTBS) should be adopted. Requirements such as academic requirement or professional experience in bone and tissue banks for a certain period of time will be needed.
Allografts ; Arthroplasty ; Bone Banks* ; Brain Death ; Cadaver ; Certification ; Extremities ; Head ; Hospitals, University ; Humans ; Jurisprudence ; Korea* ; Ligaments ; Organ Transplantation ; Orthopedics ; Quality Improvement* ; Surgeons ; Tissue Banks ; Tissue Donors ; Transplants

No abstract available.
Pancreatitis, Chronic*

No abstract available.

No abstract available.
Candidiasis* ; Drug Therapy* ; Lymphoma, Non-Hodgkin*

No abstract available.
Candidiasis* ; Drug Therapy* ; Lymphoma, Non-Hodgkin*

No abstract available.
Gastrointestinal Stromal Tumors*

Class III malocclusions are difficult to treat and take more time than any other types. But if such problems are detected at the earliest opportunity, we may gain the best possible correction consistent with the limitations imposed by morphogenetic pattern. The question of whether a patient has false or real Class III malocclusion is not important. Therapy wilt eleminate the malrelationship, in any event. Graber said, "It has been my experience that many so-called "pseudo" Class III"s are full-blown Class III" s later on during the prolific growth period." The authors have attempted early treatment of a Class III malocclusion of 8-year old girl, who has the familial history of Class III malocclusion.
Child ; Female ; Humans ; Malocclusion*

Allografts or autografts of bone-tendon unit have been used for ligament injuries or deficiencies after limb salvage operation for malignant bone tumors around joints. While the remodeling process of the ligament or tendon of the allograftor autograft and the microscopic and biomechanical changes of tendon-bone graft interface have been widely investigated, little is known about the ultrastructural and biochemical changes of the transitionall zone in tendon-bone junction. This study was performed to analyzed the ultrastructural and biochemical changes of the transitional zone after tendon-bone auto-and allo-grafting. A total of twenty four rabbits were divided into two group. In 12 animals(allograft group), two Achilles ten-don-bone unit per each animal were taken and transplanted to another rabbit after preservation below -70degrees C for 2 weeks. In the other 12 animals(autograft group), the Achilles tendon-bone unit was harvested from one side and transplanted to the other side of the rabbit. After operation, their legs were immobilized with short leg cast for 4 weeks, and then mobilized freely. Four animals in each group were sacrificed at four, eight and sixteen-weeks after the transplantation, and their grafted Achilles tendon-bone interfaces were used for analysis of the ultrasturctural and biochemical changes. The following results were obtained. 1. Histologically new cartilage cells were observed at postoperative 16 weeks with local presence of faint tidemark in the autograft group but not in the allograft group. Complete remodeling of the transitional zone had not observed histologically in both groups. 2. Ultrasturctural analysis revealed no definite differences between both groups. However, the slightly rapid appearance of parallelism and cross-striation of microfibrils in the autograft group and time-related restoration of fibers and fibroblasts were observed. 3. From biochemical analysis, type I collagen concentratin was increased, and an early rapid increase of type III collagen and glycosaminoglycan were also observed. In conclusion, these data suggested that type III collagen and glycosaminoglycan are important in stabilization of grafted tendon-bone unit, especially in the transitional zone. The histological and biochemical changes in allograft group were relatively similar to that of autograft group although the allograft group showed the delayed pattern of remodeling. Therefore, the tendon- allograft could be used as a good substitute for the autograft for tendon or ligament reconstruction when no suitable autograft is available.
Allografts ; Animals ; Autografts ; Cartilage ; Collagen Type I ; Collagen Type III ; Fibroblasts ; Joints ; Leg ; Ligaments ; Limb Salvage ; Microfibrils ; Rabbits* ; Tendons ; Transplants*

BACKGROUND: There has been a change in the causes of aortic stenosis when comparence of rheumatioc aortic stenosis in recent year. Therefore, we studied the etiology factor of pure aortic stenosis. METHODS: The gross surgical pathologic features of the aortic valves were reviewed in 92 patients with pure aotic stenosis whom underwent aortic valve replacement at Yonsei University, Cardiovascular center between July 1989 and June 1994. RESULTS: The three most frequent causes were 1) calcification of congenital bicuspid valve in 30%, 2) degenerative calcification of aortic valve in 22%, 3) rheumatioc valvular change in 48%. The mean age at the time of aortic valve replacement for the entire series of patients was 54.4 years. The range of age was from 18 years to 77 years. Males predominated for degenerative disease and congenital bicuspid valves, but there were reversed rheumatic origin. One or more complications occured in 17% of patients undergoing operation. The surgical mortality was 3.3%. CONCLUSION: Our data suggest that more common cause of aortic stenosis is non-rheumatic disease rather than rheumatinc origin.
Adult* ; Aortic Valve ; Aortic Valve Stenosis ; Constriction, Pathologic* ; Humans ; Male ; Mitral Valve ; Mortality

No abstract available.
Extremities* ; Limb Salvage* ; Tendons*