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Abstract

¿ä¾à ¹× °á·Ð
Çѱ¹ÀÎ ¹è¾Æ ¹× žÆÁß 5ÁÖ¿¡¼­ 41ÁÖ¿¡ À̸£´Â 146¿¹¸¦ ´ë»óÀ¸·Î ÇÏ¿© Å·ɺ°·Î ´ëÅð°ñÀÇ
Çü¼º ¹× ¹ß´Þ°úÁ¤À» ±¤ÇÐÇö¹Ì°æÀ¸·Î °üÂûÇÏ°í ´ÙÀ½°ú °°Àº °á·ÐÀ» ³»·È´Ù.
1 ) ´ëÅð°ñÀÇ Çü¼ºÀº ¹è·É 5ÁÖ¿¡ ÇÏÁöºÎ¸¦ ±¸¼ºÇÏ°í ÀÖ´Â Á߹迱°£¿±ÀÇ ºÐÈ­·Î ½ÃÀ۵Ǿú
´Ù.
2) ÅÂ·É 6¡­9ÁÖ¿¡´Â æãÍéîñ ä´ñ«ô÷(precartilage blastema·ÎºÎÅÍ ¿¬°ñ¸ðÇüÀÌ Çü¼ºµÇ¾ú°í,
primary bony collar¿Í ÀÏÂ÷ °ñÈ­Áß½ÉÀÇ Çü¼ºÀ¸·Î ¿¬°ñ³»°ñÈ­°¡ °üÂûµÇ¾ú´Ù.
3 ) ÅÂ·É 10¡­14ÁÖ¿¡´Â °ñ¿¬°ñÀÎÁ¢ºÎ¿¡ ¿¬°ñ³» ¼ºÀ念¿ªÀÌ Çü¼ºµÇ¾ú°í, °ñ¼ö³»°­°ú Á¶Ç÷
¼¼Æ÷°¡ °üÂûµÇ¾úÀ¸¸ç, ±ÙÀ§ÀÇ ¿¬°ñ°ñ´Ü¿¡ Ç÷°üÀÌ ÃâÇöÇÏ¿´´Ù. °ñ°£À» ±¸¼ºÇÏ´Â °ÍÀº ´ëºÎºÐ
°ñ¸·ÇÏ°ñÀ̾ú°í, ´ëÅð°ñÀÇ ÇüÅ´ ¾î¸¥ÀÇ °Í°ú À¯»çÇÏ¿´´Ù.
4) ÅÂ·É 15¡­30ÁÖ¿¡´Â î¢Ï°à÷ (remodeling)¿¡ ÀÇÇØ °ñ°£´ÜÀÇ Çü¼º ¹× ´ëÅð°ñ°£ÀÇ ´©µÎÈ­
(funnelization)°¡ µÇ¾ú´Ù.
5) ÅÂ·É 31¡­40ÁÖ¿¡´Â öµ÷ùÍéÀÌ °ñ¸·ÇÏ°ñÀÇ ¿ÜÃø¿¡¼­ Çü¼ºµÇ¾ú´Ù.
6 ) primary bony collar´Â ¿¬°ñ³»°ñÈ­ °úÁ¤ÀÇ È®´ë¿Í ÆòÇàÇÏ°Ô È®ÀåµÇ¾úÀ¸³ª, ¼ºÀ念¿ª³»
ÀÇ ¿¬°ñ ºñÈÄ´ë ÀÌ»óÀº È®ÀåµÇÁö ¾Ê¾Ò´Ù.
7 ) °ñ¿¬°ñÀÎÁ¢ºÎ´Â Å·É15ÁÖ¿¡ °ñ´Ü¿¬°ñÂÊÀ¸·Î º¹·Ï (convex) ÇÏ°Ô ¸¸°îµÇ¾ú°í, ¹è·É25
ÁÖ¿¡´Â ÊÇ(angulation)¼±À¸·Î º¯È­µÇ¾úÀ¸¸ç, ¸¸»èÀÇ Å¾ƿ¡¼­´Â ÊÇÀÌ ´õ ¿¹¸®ÇØÁ®¼­ °ñ¿¬°ñ
ÀÎÁ¢ºÎ°¡ ÀÌºÐµÈ°Í °°¾Ò´Ù. Áï °ñ¿¬°ñÀÎÁ¢ºÎÀÇ ³»Ãø¸éÀº ´ëÅð°ñ µÎÀÇ ÀúºÎ ¹× ´ëÅð°ñ°æ¿¡
À§Ä¡ÇÏ¿´°í, ¿ÜÃø¸éÀº ´ëÀüÀÚ ÀúºÎ¿¡ À§Ä¡ÇϹǷμ­ ³»¿ÜÃø¸éÀº ´ëÅð°ñÀÇ ÀåÃà¿¡ ¼öÁ÷µÇ¾î
¹è¿­µÇ¾ú´Ù.
ÀÌ»óÀÇ °üÂû°á°ú·Î »ç¶÷ÀÇ ´ëÅð°ñÀº Å·ɿ¡ µû¸£´Â ÀÏÁ¤ÇÑ ÇüÅÂÇÐÀû º¯È­¸¦ ³ªÅ¸³»¸ç ¹ß
´ÞÇÏ¸ç °¨À» ¾Ë ¼ö ÀÖ´Ù.
#ÃÊ·Ï#
To evaluate the prenatal development of human femur, a histologic study was made
based on normal femora of 24 embryos and 122 fetuses ranging in age from 5 to 41
weeks of gestation. .Following observations were made.
1) The femur starts to be formed as mesenchymal condensation in the lower limb bud
at 5 weeks of gestation.
2) By the end of the embryonic period (8 weeks), most of the skeleton of lower limb
bud consisted of cartilage model defined by perichondrium.
3) At 9 weeks of gestation, endochondral ossification and primary bony trabeculae
were prominent in the central portion of cartilage model.

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