Quantitative assessment of mineralization in distraction osteogenesis

被引:42
作者
Hazra, Sunit
Song, Hae-Ryong [1 ]
Biswal, Sandeep
Lee, Suk-Ha [2 ]
Lee, Seok Hyun [3 ]
Jang, Ki-Mo
Modi, Hitesh N.
机构
[1] Korea Univ, Guro Hosp, Rare Dis Inst, Dept Orthoped Surg, Seoul 152703, South Korea
[2] Konkuk Univ Hosp, Dept Orthoped, Seoul, South Korea
[3] Dongguk Univ Int Hosp, Dept Orthoped Surg, Ilsan, South Korea
关键词
distraction osteogenesis; BMD; callus stiffness; pixel; lengthening; Ilizarov;
D O I
10.1007/s00256-008-0495-7
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
Objectives The most important decision in distraction osteogenesis is the timing of fixator removal. Various methods have been tried, such as radiographic appearance of callus and bone mineral density (BMD) assessment, but none has acquired gold standard status. The purpose of this study was to develop another objective method of assessment of callus stiffness to help clinicians in taking the most important decision of when to remove the fixator. Materials and methods We made a retrospective study of 70 patients to compare the BMD ratio and pixel value ratio. These ratios were calculated at the time of fixator removal, and Pearson's coefficient of correlation was used to show the comparability. Inter- and intra-observer variability of the new method was also tested. Results Good correlation was found between BMD ratio and pixel value ratio, with a Pearson's coefficient of correlation of 0.79. The interobserver variability was also low, with high intra-observer reproducibility, suggesting that this test was simple to perform. Conclusion Pixel value ratio is a good method for assessing callus stiffness, and it can be used to judge the timing of fixator removal.
引用
收藏
页码:843 / 847
页数:5
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