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가토에서 두개골이식 공여부의 골재생에 Gelfoam,Bone Wax 및 Hydroxyapatite가 미치는 영향
김명철,임 풍,김진철 大韓成形外科學會 1988 Archives of Plastic Surgery Vol.15 No.2
The use of calvarial bone graft is a recent advance in craniofacial surgery. Calvarium has multiple potential advantages as a donor source due to least degree of disability and morbidity including pain. In addition, calvarium is a membranous bone which undergoes less resorption and maintains its volume to a significantly greater amount than endochondral bone when autografted in the craniofacial region. However, the knowledge of bone graft healing has been well understood and investigated, but donor site healing with the effect of various hemostatics and alloplastic material coralline hydroxyapatite on the subsequent osteoneogenesis have not been reported. The present study was designed to investigate the effect of gelfoam, bone wax and hydroxyapatite on the early stage of osteoneogenesis at the calvarial bone graft donor site and to compare with the normal progression of bone healing in control group. In 35 rabbits, four split thickness bony defects were created on the outer table of parietal bone, which were measured 5x5x2mm and treated in the following four different manners. 1) control 2) gelfoam 3) bone wax 4) hydroxyapatite. Each 7 rabbits were sacrificed at 1, 2, 4, 6, 8 weeks after taking a plain skull x-ray film. Both macroscopic and microscopic examinations were done. The results were as follows: 1. At 2 weeks in the control group, there was marked pproliferation of osteoblast and formation of osteoid. At 4 weeks, the healing with new bone formation was found to be complete. At 6 weeks, remodeling was finished and by 8 weeks, the endosteal coverage for defect area was started. 2. The group treated with gelfoam showed diminished proliferation of osteoblast and osteoid formation with marked foreign body reaction by 2 weeks. At 4 weeks, foreign body reaction was disappeared and progression of new bone formation and remodeling was similar to the control group. 3. The group treated with bone wax showed moderate foreign body reaction from 2 weeks and continued throughout the experimental period, but only mild inhibition of osteoneogenesis in the progression of remodeling was found. 4. The group treated with hydroxyapatite also showed minimal forign body reaction from 4 weeks, but similar or rather rapid pprogression of remodeling was noted.
강준기,임 풍,김진철,이종건,김명철,박철주 大韓成形外科學會 1988 Archives of Plastic Surgery Vol.15 No.1
Patients with abnormal head shapes resulting from premature fusion of one or more cranial sutures have been grouped under the term craniosynostosis. Plagiocephaly is a premature unilateral coronal synostosis consisting of flattening of the frontal region and asymmetrical orbits with resultant facial asymmetry. Early surgical treatment has been advised for the prevention of exophthalmos, visual loss, cosmetic deformities and brain damage. But the treatment differs according to the age the malformation is first recognized. A linear craniectomy along the involved sutures has been used for many years. Recently, several new or modified approaches to the treatment of coronal synostosis have developed. From september 1986 to february 1987, two patients with plagiocephaly were treated by extended craniectomy along the fused sutures with frontal bone replacement and Tessier's bilateral frontal bone advancement at 3 and 11 months. Postoperative follow up has continued, ranging from 5 to 10 months with good craniofacial symmetry.
Kim, M. C. 충남대학교부설 생명공학연구소 1992 생물공학연구지 Vol.2 No.-
The purpose of this study was to determine whether in vivo fertilization and culture using a hydrogel chamber was possible. Hydrogel chambers were made from the mixture of low-acid hema, as a monomer, and tetraethylene glycol dimethacrylate (TGD) and ethylene glycol (EG), as the cross-linkers. Rabbit oocytes and spermatozoa were transferred into the lumen of the hydrogel chambers which were filled with chemically-defined culture medium containing no protein. The chambers containing the rabbit oocytes and spermatozoa were implanted within the mouse peritoneal cavity, and were examined after recovery from the chambers following 84 hours of preservation. A total of 88 oocytes preserved after 84 hours in pHema hydrogel chambers implanted in the peritoneal cavity of female mice resulted in 29 morulae and 46 blastocysts. Thus, demonstrating that fertilization and culture can occur inside of the hydrogel chamber.