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A STUDY OF BONE AND VASCULAR CHANGE IN FABRICATING THE NEO-OSSEOUS FLAP USING ILIAC BONE AND INFERIOR EPIGASTRIC VESSEL

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Abstract

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°üÂûÇÏ¿© ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
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2. ´ëÁ¶±ºÀÌ Ãʱâ 1, 2ÁÖ¿¡´Â Á¶Á÷ÇÐÀûÀ¸·Î ¿ì¼öÇÏ¿´À¸³ª 4ÁÖºÎÅÍ´Â À¯»çÇÑ °á°ú¸¦ º¸¿´À¸
¸ç, 6ÁÖ¿Í 8ÁÖ·Î °æ°úÇϸ鼭 ½ÇÇ豺ÀÌ Á¶Á÷ÇÐÀûÀ¸·Î ¿ì¼öÇÑ °á°ú¸¦ º¸¿´´Ù.
3. Çü±¤Çö¹Ì°æÀû °üÂû¼Ò°ß»ó ´ëÁ¶±ºÀº °ñÆí³»ºÎ¿Í Ç¥¸é¿¡¼­µµ Çü±¤´ë°¡ °üÂûµÇ¾úÀ¸³ª, ½Ç
Ç豺Àº °ñÆí³»ºÎ¿¡¼­ ÁÖ·Î °üÂûµÇ¾ú´Ù.
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#ÃÊ·Ï#
Generally fabrication of neovascularized bone flap are produced by snadwiching vessels
between bone segment with the optimal size and shape for the recipient sites. When
these flaps are transferred to the recipient site, they are again isolated from the
surrounding soft tissues, resulting not only decrease in the blood flow to bone segments
by sacrifices of peripheral blood circulation due to elevation of flap, but also possible
changes of shape of osseous flap by bone resorption. To overcome these disadvantage,
it may be considerable to block bone segment off from the surrounding soft tissue.
Purpose of this study are observed time-dependent changes of blood flow, vascularity
and histologic finding of bone flaps using the autogenous bone and local vessel
implantation. The results are compared with bone flap which had not been blocked off
from surrounding soft tissues.
Neovascularized bone flap were fabricated in 90 Sprague-Dawley rats using autogenous
iliac bone and superficial inferior epigastric vessels. The experimental flaps were
wrapped with silastic sheets to block neovascularization from surrounding soft tissues,
and the control flaps were left unwrapped. The degree of bone formation, vascularity
and blood flow were then assessed at 1, 2, 4, 6 and 8 weeks after flap fabrication, using
a histological examination, microangiogram, corrosion cast study and radioactive
microspheres.
When fabricating a neovascularized bone flap using the autogenous iliac bone and the
superficial inferior epigastric vessels, the physico-histological organization, vascularity
and blood flow of neovascularized flaps were same or superior for wrapped than for
unwrapped bone segments until the 4th week after grafting. This means that the period
of neovascularization can be lengthened by the 4th weeks in the fabrication of bone
segments, which can be blocked off from surrounding soft tissues. For these reasons,
blocked bone flap fabrication can be considered to be superior to the conventional
method.

Å°¿öµå

Neovascularized bone flap; inferior epigastric vessl; blood flow;

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