3D computer tomography for measurement of femoral position in acl reconstruction

Acta Ortopédica Brasileira

Tiago Lazzaretti Fernandes¹  Nuno Miguel Morais Fonseca Martins¹  Felipe De Andrade Watai¹  Cyro Albuquerque Neto¹  André Pedrinelli¹  Arnaldo José Hernandez¹ 

关键词: Anterior cruciate ligament;    Anatomy;    Image processing computer-assisted;    Imaging;    three-dimensional;   

DOI  :  10.1590/1413-78522015230100993

来源: SciELO

【 摘 要 】

Objective: To validate intra- and inter-class correlation coefficients of a transparent 3D-TC protocol and investigate relationships between different axial rotations.Methods: Twenty unilateral knee TCs (iSite - Philips) were evaluated by means of a transparent 3D-TC OsiriX Imaging Software (v.3.9.4), 3D MPR protocol. Mathematical model of femoral tunnel projections acquired on vertical and horizontal rotations from -20 to +20 degrees. Height (h'/H) and length (t'/T) of tunnel projections have been analyzed by the Bernard and Hertel's method.Statistics: power of study=80%, ICC, ANOVA, p<0.05 (SPSS-19). Results: Transparent 3D-TC showed high reliability of both intra-observer (h'/H=0.941; t'/T=0.928, p<0.001) and inter-observer (h'/H=0.921; t'/T=0.890, p<0.001) ICC. ACL Length (t'/T) and Height (h'/H) projections were statistically different on vertical and horizontal rotations: p=0.01 and p<0.001, respectively.Conclusion: This new transparent 3D-TC protocol is an accurate and reproducible method that can be applied for ACL femoral tunnel or footprint measurement with high ICC reliability. Level of Evidence II, Descriptive Laboratory Study.

【 授权许可】

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