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KMID : 0388720070140010017
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Journal of Korean Society of Spine Surgery
2007 Volume.14 No. 1 p.17 ~ p.24
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A Comparison of Bone Mineral Density between Adolescent Idiopathic Scoliosis and Neuromuscular Scoliosis
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Moon Eun-Su
Moon Seong-Hwan
Lee Hwan-Mo
Park Jin-Oh
Shin Dong-Eun
Ha Joong-Won
Jung Min
Kim Hak-Sun
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Abstract
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Study design:A Cross-sectional study OBJECTIVE: This study evaluated the degree of osteoporosis of adolescent idiopathic scoliosis (AIS) and neuromuscular scoliosis (NMS) and compared bone mineral density.
Literature review:In osteoporosis, bone mineral density was not as dense even in the outer layer, and the cortex was thinner than normal. A larger screw doss not enhance the screw stability and can break the thin cortex in osteoporotic vertebrae.
Materials and methods:This study reviewed the cases of consecutive patients with scoliosis, who underwent an osteoporosis examination before surgery between August 2004 and June 2006. The osteoporosis examination included DEXA in lumbar vertebrae and proximal femur. The mean osteoporotic degree of both femurs was recorded. The data was analyzed using the BMD(bone mineral density, g/cm(2)) and Z value of the BMD according to age, gender, and ethnicity.
Results:The mean degree of the coronal deformity was 48.4 in AIS and 62.9 in NMS. A comparison of both groups revealed a significantly lower BMD and Z value of Femur, and BMD of the vertebra in the NMS patients (p<0.05). A comparison between AIS and non-ambulant NMS showed that all parameters were significantly lower in the non-ambulant NMS (p<0.05). Neither the BMD and Z value of the AIS nor the NMS were associated with the severity of the spinal deformity.
Conclusion:A lower BMD was measured in patients with non ambulant NMS than AIS. The degree of the osteoporosis, particularly of the non ambulant NMS patients need to be considered before undergoing surgery.
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KEYWORD
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Scoliosis, Osteoporosis
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