A novel 3D-printed device for localization and extraction of trabeculae from human femoral heads: a comparison with traditional visual extraction

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	A novel 3D-printed device for localization and extraction of trabeculae from human femoral heads: a comparison with traditional visual extraction
	Lv, H.; Zhang, L.; Yang, F.; Li, M.; Yin, P.; Su, X.; Yin, P.; Zhang, L.; Tang, P.
刊名	OSTEOPOROSIS INTERNATIONAL
	2015-06-01
卷号	26 期号:6 页码:1791-1799
英文摘要	A Summary In this study, we propose a novel method for accurate trabeculae extraction from human femoral heads using 3D-printing techniques and compare spatial deviation errors between this novel method and the conventional method. We found that spatial deviation errors, which indicate inaccuracy and unreliability, were significantly higher with the conventional method.Introduction Assessment of structural and mechanical properties of local bone is important in the study of pathological changes associated with musculoskeletal degenerative diseases. However, the widely used visual extraction method (VIS) for trabecular columns showed large deviations from veridicality, referred to as spatial deviation errors (SDE). Here, we propose a novel method for accurately locating and trephining trabeculae using a 3D-printed (3DP) positioning device and also evaluate the SDE of the VIS.Methods Twenty femoral heads were obtained from osteoporotic patients, and the trabecular columns were extracted from the principal compressive trabeculae by VIS (n = 10) or the 3DP (n = 10) method. Morphological, structural, and mechanical properties were compared between both groups along with the recorded errors in spatial deviation.Results Compared with the 3DP group, the average angle of central axis deflection in the VIS group was significantly greater; SDE in the VIS group was 26.1, 8.8, 4.1, 9.8, 7.2, 8.1, and 10.1 % greater for bone mineral density, bone volume/tissue volume ratio, trabecular thickness, trabecular number, Young's modulus, yield strength, and ultimate strength.Conclusion In this study, a high degree of SDE was demonstrated in the VIS, which indicates that the conventional technique is unreliable. Additionally, accurate sample fabrication and credible quantitative analysis of local trabeculae among individuals can be achieved with the aid of computed tomography and the 3DP device, thus providing a more objective method for researching musculoskeletal degenerative diseases and possibly a better clinical understanding of these disorders.
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/38677]
专题	化学研究所_其它
推荐引用方式 GB/T 7714	Lv, H.,Zhang, L.,Yang, F.,et al. A novel 3D-printed device for localization and extraction of trabeculae from human femoral heads: a comparison with traditional visual extraction[J]. OSTEOPOROSIS INTERNATIONAL,2015,26(6):1791-1799.
APA	Lv, H..,Zhang, L..,Yang, F..,Li, M..,Yin, P..,...&Tang, P..(2015).A novel 3D-printed device for localization and extraction of trabeculae from human femoral heads: a comparison with traditional visual extraction.OSTEOPOROSIS INTERNATIONAL,26(6),1791-1799.
MLA	Lv, H.,et al."A novel 3D-printed device for localization and extraction of trabeculae from human femoral heads: a comparison with traditional visual extraction".OSTEOPOROSIS INTERNATIONAL 26.6(2015):1791-1799.