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Korean J Spine 2006;3(3): 166-170.
4
Early Experience of Posterior Lumbar Spinal Fusion with Shape Memory Implant in Degenerative Spinal Disorders
Hyung Suk Kim, M.D., Woo Kyung Kim, M.D., Sang Gu Lee, M.D.,Chan Jong Yoo, M.D., and Chan Woo Park, M.D.
Department of Neurosurgery, Gachon Medical School, Gil Medical Center, Incheon, Korea
Early Experience of Posterior Lumbar Spinal Fusion with Shape Memory Implant in Degenerative Spinal Disorders
Hyung Suk Kim, M.D., Woo Kyung Kim, M.D., Sang Gu Lee, M.D.,Chan Jong Yoo, M.D., and Chan Woo Park, M.D.
Abstract
Objective: Posterior lumbar spinal fusion(PLSF) has evolved in various ways and became one of the most widely performed lumbar spinal procedures. In this study, we evaluated the patient group that underwent lumbar spinal fusion with a shape memory implant to assess the usefulness of a shape memory implant system.
Methods: The patient group of 32 cases who underwent posterior lumbar spinal fusion(PLSF) with shape memory implant system and the control group of 32 cases who underwent PLSF with screw & rod fixation system between November 2004 and September 2005 were included in this study and pre-/ post-operative VAS score, Odom's criteria, operating time, intraoperative EBL, hemovac drainage, duration of hospitalization, and time to postoperative ambulation were compared between the two groups.
Results: The mean age was 47 and 50 respectively, male to female ratio was 17:15 and 18:14, and lumbar spine fusion level was equal. The average VAS score and Odom's criteria were compared to the screw & rod fixation system group. The mean operating time(min) was 310 and 400, intraoperative EBL(mL) was 410 and 690, hemovac drainage(total mL/day) was 59 and 115(p<0.05), admission time(day) was 14.3 and 15.8, and postoperative ambulation time(day) was 2.0 and 3.9 was also checked.
Conclusions: According to the evaluation of pre- and postoperative VAS score, Odom's criteria, and other objective results, we concluded that the shape memory implant system has several advantages over the former lumbar spinal fusion system.
Keywords: Spinal fusion, Minimally invasive surgical procedures
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