Lateral femoral scan: an alternative method for assessing bone mineral density in children with cerebral palsy

被引:66
作者
Harcke, HT
Taylor, A
Bachrach, S
Miller, F
Henderson, RC
机构
[1] duPont Hosp Children, Dept Med Imaging, Wilmington, DE 19899 USA
[2] duPont Hosp Children, Dept Res, Wilmington, DE 19899 USA
[3] duPont Hosp Children, Dept Pediat, Wilmington, DE 19899 USA
[4] duPont Hosp Children, Dept Orthopaed, Wilmington, DE 19899 USA
[5] Univ N Carolina, Dept Orthopaed, Chapel Hill, NC USA
关键词
D O I
10.1007/s002470050341
中图分类号
R72 [儿科学];
学科分类号
100202 ;
摘要
Background. Children with cerebral palsy (CP), often non-ambulatory and/or on anticonvulsants, are at increased risk for fractures. Bone mineral density (BMD) measured by the conventional techniques of dual-energy X-ray absorptiometry (DXA) often cannot be reliably or easily measured in these patients. Objective. To find an alternative site to whole body, spine and hip that can be conveniently used to measure BMD in CP patients. Material and methods. Having observed that CP patients prefer to lie on their sides, we explored measuring BMD at the distal femur in the lateral projection. A total of 92 scans were performed without sedation in 34 children and adolescents with CP, aged 4-19 years. Four femoral shaft subregions were created: two trabecular and two cortical. Results. The coefficients of variation (CV%) were generally higher for opposite-side comparisons (n = 12 patients) than for same-side comparisons (n = 16 patients). For intra-and interobserver analyses, CV% were higher for cortical regions than for trabecular regions. Overall, the CV% were similar to those for hip and spine. Conclusion. This peripheral site in the femur should be considered as an alternative for patients with CP when whole-body hip and spine DXA are not practical.
引用
收藏
页码:241 / 246
页数:6
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