Saturday, January 19, 2013

Normal measurement of ACL bundles




Figure : 1.5-T sagittal T1-weighted MRI showing AM and PL bundle length and width. The AM bundle is approximately twice as long as the PL bundle and has a similar cross-sectional diameter. The vertical lines are examples of the measurements (length) taken for the AM and PL bundles. Abbreviations: AM, anteromedial; PL, posterolateral. Figure 4: Coronal T1-weighted MRI showing AM and PL bundle width measurements. The horizontal lines are examples of the measurements (width) taken for the AM and PL bundles. Abbreviations: AM, anteromedial; PL, posterolateral.

 
Measurements in cadaveric specimens suggest that the anteromedial bundle is approximately 38 mm in length, while the posterolateral bundle is approximately 18 mm in length.With respect to midsubstance diameter, the anteromedial and posterolateral bundles are similar, with an average size of 7.1 mm and 6.7 mm, respectively.

Reference 


 Figure 3: 1.5-T sagittal T1-weighted MRI showing AM and PL bundle length and width

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