MRI (Magnetom Symphony 1.5 T; Siemens) was performed at 6 or 12 months postoperatively in 14 patients and was repeated in some patients. Conventional MRI sequences, including T1-weighted, T2-weighted, and short tau inversion recovery (STIR) imaging, were performed in the sagittal plane. Assessment was performed for changes in underlying bone in T1-weighted images and for articular congruity including cartilage signal in T2-weighted and STIR images. Results were assessed as normal or near-normal or as abnormal according to the criteria described by Roberts et al21 (link) (Appendix Table A3 ).
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Post-Operative MRI Evaluation of Patients
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Corresponding Organization : Osaka Hospital
Other organizations : Osaka University, Osaka Police Hospital
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Variable analysis
independent variables
- Time of MRI acquisition (6 or 12 months postoperatively)
- Changes in underlying bone in T1-weighted images
- Articular congruity including cartilage signal in T2-weighted and STIR images
- MRI scanner (Magnetom Symphony 1.5 T; Siemens)
- MRI sequences (T1-weighted, T2-weighted, and STIR imaging)
- Imaging plane (sagittal)
- Assessment was performed according to the criteria described by Roberts et al in the Appendix Table A3
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