Impact of measurement errors on the determination of the linear modulus of human meniscal attachments.
Impact of measurement errors on the determination of the linear modulus of human meniscal attachments.
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测量误差对人体半月板附件线性模量测定的影响
DOI：
10.1016/j.jmbbm.2012.02.027
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发表时间：
2012
影响因子：
3.9
通讯作者：
Dürselen L
中科院分区：
文献类型：
--
作者：
Seitz AM;Wolfram U;Wiedenmann C;Ignatius A;Dürselen L
为了开发半月板替代物和相关的有限元模型，有必要了解半月板及其附件的机械性能。测量误差会使材料性能的测定结果失真。因此，研究了几何和几何测量误差对人体牙弓附着体线性模量测定的影响。在完全微分之后，力（+0.10%）、附着变形（-0.16%）和纤维长度（+0.11%）测量的误差几乎相互抵消。横截面积测定的误差范围为0.00%，从组织学切片收集，高达14.22%，从数字卡尺测量获得。因此，总测量误差范围为+0.05%至− 14.17%，主要受横截面积测定误差的影响。进一步的研究表明，与承载胶原纤维的面积相比，整个横截面明显更大。这种对横截面积的高估导致了对线性模量的低估，最高可达-36.7%。此外，附件的胶原纤维区域的横截面沿着其纵轴显著变化高达+90%。胶原纤维面积和组织学确定的横截面积之间的比值范围为0.61（后外侧韧带）和0.69（后内侧韧带）。由于使用了不同的方法和横截面积测定位置，人体牙周附着体的线性模量可能被显著低估。因此，建议从组织学上评估承载胶原纤维面积，或者使用本研究中提出的校正因子。
For the development of meniscal substitutes and related finite element models it is necessary to know the mechanical properties of the meniscus and its attachments. Measurement errors can falsify the determination of material properties. Therefore the impact of metrological and geometrical measurement errors on the determination of the linear modulus of human meniscal attachments was investigated. After total differentiation the error of the force (+0.10%), attachment deformation (−0.16%), and fibre length (+0.11%) measurements almost annulled each other. The error of the cross-sectional area determination ranged from 0.00%, gathered from histological slides, up to 14.22%, obtained from digital calliper measurements. Hence, total measurement error ranged from +0.05% to −14.17%, predominantly affected by the cross-sectional area determination error. Further investigations revealed that the entire cross-section was significantly larger compared to the load-carrying collagen fibre area. This overestimation of the cross-section area led to an underestimation of the linear modulus of up to −36.7%. Additionally, the cross-sections of the collagen-fibre area of the attachments significantly varied up to +90% along their longitudinal axis. The resultant ratio between the collagen fibre area and the histologically determined cross-sectional area ranged between 0.61 for the posterolateral and 0.69 for the posteromedial ligament. The linear modulus of human meniscal attachments can be significantly underestimated due to the use of different methods and locations of cross-sectional area determination. Hence, it is suggested to assess the load carrying collagen fibre area histologically, or, alternatively, to use the correction factors proposed in this study.
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DOI：
10.1007/s00167-011-1708-5
发表时间：
2012
期刊：
Knee Surgery, Sports Traumatology, Arthroscopy
影响因子：
--
作者：
A. Seitz;R. Kasisari;L. Claes;A. Ignatius;L. Dürselen
通讯作者：
L. Dürselen
影响因子：
2.4
作者：
Race, A;Amis, AA
通讯作者：
Amis, AA
影响因子：
4.2
作者：
L. Setton;F. Guilak;E. Hsu;T. Vail
通讯作者：
L. Setton;F. Guilak;E. Hsu;T. Vail
影响因子：
5.3
作者：
Wijdicks, Coen A.;Griffith, Chad J.;Engebretsen, Lars
通讯作者：
Engebretsen, Lars
影响因子：
4.8
作者：
Alhalki, MM;Howell, SM;Hull, ML
通讯作者：
Hull, ML