Àá½Ã¸¸ ±â´Ù·Á ÁÖ¼¼¿ä. ·ÎµùÁßÀÔ´Ï´Ù.

Polymethylmethacrylate¸¦ ÀÌ¿ëÇÑ Ã´Ãßü Àç°Ç¼ú¿¡¼­ ô¼öÀÇ ¿­ ¼Õ»óÀ» ¹æÁöÇϱâ À§ÇÑ ¹æ¾îº® ±â¹ý Barrier Techniques for Spinal Cord Protection from Thermal Injury in Polymethylmethacrylate Reconstruction of Vertebral Body

´ëÇѽŰæ¿Ü°úÇÐȸÁö 2001³â 30±Ç 3È£ p.272 ~ 277
¹ÚÃá±Ù, Áöö, ȲÀåȸ, ±Ç¼º¿À, ¼ºÀçÈÆ, ÃÖ¼ºÁø, ÀÌ»ó¿ø, ¹Ú¼ºÂù, Á¶°æ¼÷,
¼Ò¼Ó »ó¼¼Á¤º¸
¹ÚÃá±Ù ( Park Chun-Kun ) 
°¡Å縯´ëÇб³ ÀÇ°ú´ëÇÐ ¼ººó¼¾Æ®º´¿ø ½Å°æ¿Ü°ú

Áöö ( Ji Chul ) 
°¡Å縯´ëÇб³ ¼ººó¼¾Æ®º´¿ø ½Å°æ¿Ü°úÇб³½Ç
ȲÀåȸ ( Hwang Jang-Hoe ) 
ÇѸ²´ëÇб³ ÀÇ°ú´ëÇÐ ½Å°æ¿Ü°úÇб³½Ç
±Ç¼º¿À ( Kwun Sung-Oh ) 
°¡Å縯´ëÇб³ ¼ººó¼¾Æ®º´¿ø ½Å°æ¿Ü°úÇб³½Ç
¼ºÀçÈÆ ( Sung Jae-Hoon ) 
°¡Å縯´ëÇб³ ÀÇ°ú´ëÇÐ ¼ººó¼¾Æ®º´¿ø ½Å°æ¿Ü°ú
ÃÖ¼ºÁø ( Choi Seung-Jin ) 
°¡Å縯´ëÇб³ ÀÇ°ú´ëÇÐ ¼ººó¼¾Æ®º´¿ø ½Å°æ¿Ü°ú
ÀÌ»ó¿ø ( Lee Sang-Won ) 
°¡Å縯´ëÇб³ ÀÇ°ú´ëÇÐ ¼ººó¼¾Æ®º´¿ø ½Å°æ¿Ü°ú
¹Ú¼ºÂù ( Park Sung-Chan ) 
°¡Å縯´ëÇб³ ¼ººó¼¾Æ®º´¿ø ½Å°æ¿Ü°úÇб³½Ç
Á¶°æ¼÷ ( Cho Kyoung-Suok ) 
°¡Å縯´ëÇб³ ÀÇ°ú´ëÇÐ ¼ººó¼¾Æ®º´¿ø ½Å°æ¿Ü°ú

Abstract

Polymethylmethacrylate(PMMA)´Â ôÃß ÀüÀûÃâ¼úÈÄ¿¡ ôÃ߸¦ Àç°ÇÇϱâ À§ÇØ »ç¿ëµÇÁö¸¸ ¾×ü ÇüÅÂÀÇ PMMA°¡ ÀÀ°íÇϸ鼭 ¹ß»ýµÇ´Â¿­Àº ô¼ö ½Å°æÀÇ ¿­ ¼Õ»ó °¡´É¼ºÀ» °¡Áö°í ÀÖ´Ù/ ÀÌ ¿¬±¸ÀÇ ¸ñÀûÀº ÀÌ¹Ì ÀÀ°íµÈ PMMA sheet°¡ ô¼ö ½Å°æÀ» º¸È£ÇÏ´Â ¹æ¾î º®À¸·Î¼­ÀÇ ¿­ Â÷´Ü ¿ªÇÒÀ» ÇÒ ¼ö ÀÖ´ÂÁö ¶ÇÇÑ ¿­¼Õ»óÀ¸·ÎºÎÅÍ ½Å°æÀ» º¸È£Çϱâ À§ÇØ ÇÊ¿äÇÑ ¹æ¾îº®ÀÇ ÃÖ¼ÒÇÑÀÇ µÎ²²¸¦ Ž±¸ÇÏ´Â µ¥ ÀÖ´Ù. ½ÇÇè½Ç¿¡¼­ Á¦ 12¹ø° Èä¼öü Àü ÀûÃâÈÄÀÇ»óÅÂ¿Í µ¿ÀÏÇÑ Å©±â¿Í ¸ð¾çÀÇ Á¤À°¸éüÀÇ ¿ë±â¸¦ Á¦ÀÛÇÏ¿´´Ù. 60mlÀÇ ¾×üÇü PMMA¸¦ ¿ë±â ¾È¿¡ ÁÖÀÔÇÏ¿© ÀÀ°íÇÏ´Â PMMAÁß½ÉºÎ¿Í ¼¼ °¡Áö ´Ù¸¥ µÎ²²ÀÇ(Á¦1±º:0mm, Á¦2±º:5mm, Á¦3±º:8mm) ÀÌ¹Ì ÀÀ°íµÈ PMMA sheetÀÇ ÇϺÎ(ô¼öÀÇ Àü¸éÀ» ÀǹÌ)¿¡¼­ ¿Âµµ¸¦ ÃøÁ¤ÇÏ¿´´Ù. ¶ÇÇÑ ÀÌ °á°ú¿¡ ´ëÇÑ À§ÀÇ ¼¼ °¡Áö ±º¿¡ ´ëÇØ ¿­¿ªÇÐÀû ºÐ¼®µµ ½ÃÇàÇÏ¿´´Ù.
ÀÀ°íÇÏ´Â PMMA µ¢ÀÌÀÇ Á߽ɺο¡¼­ÀÇ ¿Âµµ´Â 18ȸÀÇ ½ÇÇè µ¿¾È ¸Å¿ì ÀÏÁ¤ÇÏ¿©(106.8¡¾3.9¡É)ÀÌ ½ÇÇè ¸ðµ¨ÀÇ ÀçÇö¼ºÀ» º¸¿©ÁÖ°í ÀÖ¾ú´Ù. ¹æ¾î º®ÀÌ ¾ø´Â ±º(Á¦1±º)¿¡¼­ ô¼ö ½Å°æ Àü¸éÀÇ ÃÖ°í ¿Âµµ°¡ 60.3¡ÉÀÌ¿´À¸³ª 5mm ±º(Á¦2±º)°ú 8mm(Á¦3±º)¿¡¼­´Â °¢°¢ 47.3¡É¿Í 43.3¡É·Î ÀÌ¹Ì ÀÀ°íµÈ PMMA´Â Åë°èÀûÀ¸·Î À¯ÀÇÇÑ(p<0.00005)¿Âµµ Â÷´Ü È¿°ú¸¦ º¸¿´´Ù. ÃÖ°í ¿Âµµ¿¡ µµ´ÞÇϱâ±îÁöÀÇ °è»êµÈ ½Ã°£Àº ½ÇÁ¦ ½ÇÇèÄ¡ º¸´Ù 35%À̳»ÀÇ ¿ÀÂ÷¸¦ º¸¿´À¸³ª ÃÖ°í ¿Âµµ¿¡ ´ëÇÑ ¿­¿ªÇÐÀûÀÎ °è»êÄ¡´Â ½ÇÁ¦ ½ÇÇè¿¡¼­ ³ªÅ¸³­ ¼öÄ¡ÀÇ 1%À̳»ÀÇ ¿ÀÂ÷¸¦ º¸¿´´Ù.
ÀÌ»óÀÇ ¿­¿ªÇÐÀûÀÎ ÀڷḦ Åä´ë·Î º¼ ¶§, PMMA¸¦ ÀÌ¿ëÇÑ Ã´ÃßÀÇ¤Ó Àç°Ç¼ú¿¡¼­ PMMA ¹æ¾îº®Àº ô¼öÀÇ ¿­¼Õ»óÀ» ¹æÁöÇÏ´Â È¿°ú°¡ ÀÖÀ¸¸ç, ÀÌ ½ÇÇè¿¡¼­ °¡Á¤ÇÑ Ã´¼öÀÇ ¿­¼Õ»ó ¿ªÄ¡ÀÎ 39¡ÉÀÌÇϷΠô¼ö ¿Âµµ¸¦ À¯ÁöÇϱâ À§ÇØ ÇÊ¿äÇÑ PMMA¹æ¾îº®ÀÇ µÎ²²´Â 10mmÁ¤µµ·Î °è»êµÇ¾ú´Ù, PMMA ¹æ¾îº®ÀÇ ÀÓ»ó Àû¿ë¿¡ ´ëÇؼ­´Â Ãß°¡ÀûÀÎ ÀÓ»ó ½ÇÇèÀÌ ÇÊ¿äÇÏ´Ù°í »ç·áµÈ´Ù.
Objective : Polymethylmethacrylate(PMMA) is often used to reconstruct the spine after total corpectomy, but the exothermic curing of liquid PMMA poses a risk of thermal injury to the spinal cord. The purposes of this study are to analyze the heat blocking effect of pre-polymerized PMMA sheet in the corpectomy model and to establish the minimal thickness of PMMA sheet to protect the spinal cord from the thermal injury during PMMA cementation of vertebral body.
Materials & Methods : An experimental fixture was fabricated with dimensions similar to those of a T12,corpectomy defect. Sixty milliliters of liquid PMMA were poured into the fixture, and temperature recordings werel,obtained at the center of the curing PMMA mass and on the undersurface (representing the spinal cord surface) of a prepolymerized PMMA sheet of variable thickness(group 1 : 0mm, group 2 : 5mm, or group 3 : 8mm). Six teplicates were tested for each barrier thickness group.
Results : Consistent temperatures (1 06.8¡¾3.9C) at center of the curing PMMA mass in eighteen experiments confirmed the reproducibility of the experimental fixture. Peak temperatures on the spinal cord surface were ,47.3 C in group 2, and 43.3C in group 3, compared with 60.0C in group 1(p<0.00005). So pre-polymerized PM IA provided statistically significant protection from heat transfer. The difference of peak temperature between theoretical and experimental value was less than 1 %, while the predicted time was within 35% of experimental values. The data from the theoretical model indicate that a 10mm barrier of PMMA should protect the spinal cord from temperatures greater than 391C (the threshold for thermal injury in the spinal cord).
Conclusion : These results suggest that pre-polymerized PMMA sheet of 10mm thickness may protect the spinal cord from the thermal injury during PMMA reconstruction of vertebral body.

Å°¿öµå

Polymethylmethacrylate(PMMA);Thermal spinal cord injury;Experimental model;Thecretical model

¿ø¹® ¹× ¸µÅ©¾Æ¿ô Á¤º¸

 

µîÀçÀú³Î Á¤º¸

KoreaMed
KAMS