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Lumbar Lordosis Restoration with an Eight Degree Cage in Posterior Lumbar Interbody Fusion for Lumbar Degenerative Disease
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Abstract
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°á °ú: ÄÉÀÌÁö°¡ »ðÀÔµÈ ºÐÀýÀº 3-4 ¿äÃß 17¿¹, 4-5 ¿äÃß 54¿¹, 5 ¿äÃß-1 õÃß 20¿¹¿´´Ù. À¯ÇÕÇÑ ºÐÀý ¼ö´Â 1ºÐÀý 32¸í, 2ºÐÀý 27¸í, 3ºÐÀý 2¸íÀ̾ú´Ù. ¿äÃß Àü¸¸°¢Àº ¼ö¼ú Àü 33.6o, ¼ö¼ú ÈÄ 37.6o, ÃÖÁ¾ Ã߽à ½Ã 37.0o·Î ÃøÁ¤µÇ¾î ¼ö¼ú Àü¿¡ ºñÇØ À¯ÀÇÇÏ°Ô Áõ°¡ÇÏ¿´´Ù. ÄÉÀÌÁö°¡ »ðÀÔµÈ ¿äÃß ºÐÀý°¢Àº ¼ö¼ú Àü, ¼ö¼ú ÈÄ, ÃÖÁ¾ Ã߽à ½Ã °¢°¢ 3-4 ¿äÃß°¡ 7.0o-7.5o-6.8o, 4-5 ¿äÃß°¡ 6.5o-9.6o-8.2o, 5¿äÃß-1 õÃß°¡ 7.6o-8.3o-7.7o·Î ¼ö¼ú Á÷ÈÄ¿¡ ºñÇØ ±³Á¤ ¼Ò½ÇÀº º¸¿´À¸³ª ȸº¹µÇ´Â ¾ç»óÀ» º¸¿´´Ù. Ãß°£ÆÇÀÇ ³ôÀÌ´Â ¼ö¼ú Àü¿¡ ºñÇØ ÃÖÁ¾ Ã߽à ½Ã ȸº¹µÇ¾ú´Ù. °ñÀ¯ÇÕ·üÀº 95%ÀÇ È¯ÀÚ¿¡¼ ¸¸Á·ÇÑ °á°ú¸¦ ¾ò¾ú´Ù.
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Purpose: The purpose of this study is to determine how much lumbar lordosis is restored with an eight degree cage in posterior lumbar interbody fusion (PLIF) for degenerative lumbar spinal disease.
Materials and Methods: A total of 61 patients who underwent PLIF using a metal cage with an eight degree lordotic angle were evaluated. Cases with complications such as subsidence of the cage or instrument failure were excluded from this study. Lumbar lordosis, segmental lordosis, disc height, and bony union were analyzed on the patients¡¯ radiographs.
Results: Cages were inserted at L3-4 in 17 patients, L4-5 in 54 patients, and L5-S1 in 20 patients. The number of fused level was 1 segment in 32 patients, 2 segments in 27 patients, and 3 segments in 2 patients. The lumbar lordosis was 33.6¡Æ before surgery, improved to 37.6¡Æ after surgery, and then was changed to 37.0¡Æ at the final follow-up. Segmental lordosis at which the cage was inserted was restored after surgery at L4-5 and L5-S1. Disc height was improved with surgery as well. Satisfactory bony fusion was achieved in 95% of the patients.
Conclusion: PLIF using an eight degree lordotic cage for degenerative spinal disease resulted in restoration of lumbar lordosis and segmental lordosis, although these angles showed some loss of correction after surgery.
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ÈÄ¹æ ¿äÃßü °£ À¯ÇÕ¼ú, ÄÉÀÌÁö, ¿äÃß Àü¸¸°¢, ºÐÀý°¢
posterior lumbar interbody fusion, cage, lumbar lordosis, segmental lordosis
KMID :
0361620140490030177
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