Med Biol Eng Comput - Quantitative topographic anatomy of the femoral ACL footprint: a micro-CT analysis.

Tópicos

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Resumo

The femoral footprint of the anterior cruciate ligament (ACL) is a much-studied anatomic structure, predominantly due to its importance during ACL reconstruction surgery. A new technique utilising high-resolution micro-computed tomography (micro-CT) is described, allowing detailed three-dimensional (3D) quantitative analysis of this structure. Seven cadaveric knees were scanned using micro-CT, yielding 3D data with a reconstructed voxel size of 60??m. A novel method of 3D surface extraction was developed and validated, facilitating both qualitative observation of surface details and quantitative topographic assessment using colour-coded relief maps. Images were displayed on an immersive 3D visualisation wall, and ten experienced ACL clinicians were surveyed as to the presence and morphology of osseous landmarks, providing qualitative assessment of whether such features can be reliably identified for navigation during surgery. Both quantitative analysis and qualitative assessment of the footprints in this study showed significant variability in the presence and morphology of osseous landmarks, with the lateral intercondylar ridge being objectively present in four out of seven relief maps, although reportedly seen in six out of seven cases in the qualitative study, suggesting an element of subjectivity and interpretation. This is the first study to utilise micro-CT in the study of ACL anatomy.

Resumo Limpo

femor footprint anterior cruciat ligament acl muchstudi anatom structur predomin due import acl reconstruct surgeri new techniqu utilis highresolut microcomput tomographi microct describ allow detail threedimension d quantit analysi structur seven cadaver knee scan use microct yield d data reconstruct voxel size m novel method d surfac extract develop valid facilit qualit observ surfac detail quantit topograph assess use colourcod relief map imag display immers d visualis wall ten experienc acl clinician survey presenc morpholog osseous landmark provid qualit assess whether featur can reliabl identifi navig surgeri quantit analysi qualit assess footprint studi show signific variabl presenc morpholog osseous landmark later intercondylar ridg object present four seven relief map although report seen six seven case qualit studi suggest element subject interpret first studi utilis microct studi acl anatomi

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