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KMID : 0359820010300020131
Journal of Korean Neurosurgical Society
2001 Volume.30 No. 2 p.131 ~ p.136
The Effect of Repetitive Insertion and Pullout of Spinal Screws on Pullout Resistance: A Biomechanical Study
Bak Koang-Hum

Ferrara Lisa

Kim Jae-Min
Kim Choong-Hyun
Benzel Edward C.
Abstract
¸ñÀû : Ãֱ٠ôÃß ¼ö¼ú¿¡ ³ª»ç¸øÀ» »ç¿ëÇÏ´Â ºóµµ¿Í ¹üÀ§°¡ ³Ð¾î Áö°í Àִµ¥ ¶§·Î ¼ö¼ú Áß Çѹø »ðÀÔÇÏ¿´´ø ³ª»ç¸øÀ» ´Ù½Ã »ç¿ëÇÏ´Â °æ¿ì°¡ ÀÖ´Ù. ÀÎü °ñ°ú ŸÀÌŸ´½ÀÇ Åº¼º °è¼ö°¡ Å©°Ô Â÷À̳ªÁö¸¸ ¹Ýº¹ »ðÀÔ °úÁ¤¿¡¼­ ³ª»ç¸øÀÇ ÀÌ°¡ ¼Õ»óµÉ °¡´É¼ºÀÌ ÀÖ´Ù. ÀúÀÚµéÀº ³ª»ç¸øÀÇ ¹Ýº¹ »ðÀÔÀÌ ³ª»ç¸øÀÇ ÀÎÃâ ÀúÇ׿¡ ¹ÌÄ¡´Â ¿µÇâÀ» Á¶»çÇÏ¿´´Ù.

¹æ¹ý : °¢°¢ 6°³ÀÇ ¼¼°¡Áö ´Ù¸¥ Á¾·ù cortical lateral mass screw, cancellous lateral mass screw and cervical vertebral body screwÀÇ ³ª»ç¸øÀ» ½ÃÇèÇÏ¿´´Ù. ³ª»ç¸øÀ» ÀÎüÀÇ °ñ°ú ºñ½ÁÇÑ ¹ÐµµÀÇ ÀΰøÇÕ¼º°ñ¿¡ »ðÀÔÇÏ¿´À¸¸ç »ðÀÔ Áß »ðÀÔ·ÂÀ» ÃøÁ¤ÇÏ¿´°í ±× ÈÄ Instron(Model TT-D, Canton, MA)À» ÀÌ¿ëÇÏ¿© 2.4mmÀÇ ¼Óµµ·Î ÀÎÃâÇÏ¿© ÀÎÀåÇ×·ÂÀ» digital oscilloscope¿¡ ±â·ÏÇÏ¿´´Ù. À§ÀÇ °úÁ¤À» 3ȸ ¹Ýº¹ÇÏ¿© ±â·ÏÇÑ µÚ ³ª»ç¸øÀ» ±¤ÇÐ Çö¹Ì°æÀ¸·Î È®´ëÇÏ¿© °üÂûÇÏ¿´´Ù.

°á°ú : cortical lateral mass screwÀÇ Æò±Õ ÀÎÀåÇ×·Â(1ȸÀÎÀå ½ÃÇè 185.66N¡¾42.60, 2ȸ ÀÎÀå½ÃÇè 167.10N¡¾27.01, 3ȸ ÀÎÀå½ÃÇè 162.52N¡¾23.83 : p=0.03)°ú cervical vertebral body screws(386.0N¡¾24.1, 360.2N¡¾17.5 and 330.9N¡¾16.7:p=0.0024)Àº ¹Ýº¹ÇÏ¿© »ðÀÔ, ÀÎÀå °Ë»ç ÇÒ¶§¸¶´Ù °¨¼ÒÇÏ¿´À¸³ª cancellous lateral mass screwsÀÇ Æò±Õ ÀÎÀåÇ×·Â(194.00N¡¾36.47, 219.24N¡¾26.58 and 199.49N¡¾36.63:p=0.24)Àº °¨¼ÒÇÏÁö ¾Ê¾Ò´Ù. ÀüÀÚÇö¹Ì°æ ¼Ò°ß¿¡¼­ ³ª»çÀÌÀÇ ³¡ÀÌ ¹«µð¾îÁö°í Ç¥¸éÀÌ ¹®µå·¯Áø °ÍÀ» °üÂûÇÒ ¼ö ÀÖ¾ú´Ù.

°á·Ð : ÀϺΠ³ª»ç¸øÀ» ¹Ýº¹ÇÏ¿© »ðÀÔÇÑ ÈÄ ³ª»ç¸øÀÇ ÀÎÀåÇ×·ÂÀÌ °¨¼ÒµÇ¾úÀ¸¹Ç·Î ¼ö¼úÁß ¿©·¯¹ø »ðÀÔÇÏ¿´´ø ³ª»ç¸øÀº ÃÖÁ¾ ±¸Á¶¹°¿¡ »ç¿ëµÇÁö ¾Ê¾Æ¾ß ÇÑ´Ù.
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