Japanese Journal of Magnetic Resonance in Medicine
Online ISSN : 2434-0499
Print ISSN : 0914-9457
ORIGINAL CONTRIBUTION
Using MRI to Evaluate Femoral Bone Tunnel Position and Diameter after ACL Reconstruction Surgery
Katsuya TSUNEYOSHIHiroyuki KANKeiichirou UESHIMAManabu HINOShintarou KOMAKISeiji SHIMOMURATomoharu YOSHIKAWA
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2021 Volume 41 Issue 2 Pages 23-30

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Abstract

Purpose

 The assessment of bone foramina is essential for evaluating surgical results after ACL reconstruction. Typically, CT scans are used to evaluate bone tunnels, whereas 3D MRI images are rarely used for evaluation. Therefore, the purpose of this study was to use MRI to verify whether surface renderings created using the image processing software installed in the MRI system were useful for evaluating femoral bone tunnels without using workstation software.

Method

 To determine the optimal 3D sequence parameters for evaluating bone tunnels, we created 3D images of 20 male and 20 female patients, aged 15-56 years who underwent ACL reconstruction surgery and evaluated the images using the quadrant method. We compared CT and MRI using the quadrant method to determine whether MRI can be used to evaluate bone tunnels.

Conclusion

 Calculation of concordance rates among kappa coefficients of MRI and CT images for the position coordinates and foramina diameters obtained by the quadrant method determined kappa coefficients which were ≥0.87. Accordingly, MRI using surface rendering is a useful imaging method without exposure to radiation as an alternative to CT for bone hole evaluation after ACL reconstruction.

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© 2021 Japanese Society for Magnetic Resonance in Medicine
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