Diagnostic value of the meniscal stability of the knee: weight-bearing MRI vs arthroscopy

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Congress:

ECR 2015

Poster Number:

B-1209

Type:

Scientific Paper

Keywords:

Musculoskeletal joint, MR, Imaging sequences, Motility

Authors:

A. La Marra, S. Mariani, F. Arrigoni, L. M. Gregori, F. Smaldone, A. Barile, C. Masciocchi; L'Aquila/IT

DOI:

10.1594/ecr2015/B-1209

DOI-Link:

https://dx.doi.org/10.1594/ecr2015/B-1209

Fig. 1: GROUP 1B :32 MENISCOCAPSULAR SEPARATION 32/32 Unstable

Fig. 2: GROUP 1B :MENISCOCAPSULAR SEPARATION

Fig. 3: GROUP 2 B : LONGITUDINAL LESION 89/ 106 UNSTABLE

Fig. 4: GROUP 2B LONGITUDINAL LESION 89/106 UNSTABLE

Purpose

To assess the role of dedicated low-field standard ( 1,5 t) and weight-bearing MRI in the evaluation of stable or unstable traumatic tears of medial meniscus in comparison with arthroscopy.

Methods and materials

We evaluated 3500 knee MRI scans performed with a high-field.Based on clinical and imaging diagnosis, we selected two groups (A-B). In group A 70 patients of normal knee and in group B 275 pts with clinical evidence of medial meniscus traumatic lesions. All patient after conventional exam underwent upright weight-bearing MRI. 275 patients had an arthroscopy between 7 and 21 days after diagnostic examination

Results

In group A there were no anatomical variations of the signal intensity, position and morphology of the Medial Meniscus. In group B the 1,5 T MRI showed in 32 cases (B1) a meniscocapsular separation, in 106( B2) a longitudinal lesion, in 67(B3) horizontal lesion and in 70 a radial tear (B4).In B1 w-b MRI showed unstable tear in all 32 cases. In B2, w-b MRI showed unstable tear in 89 /106 patients. In B3, w-b MRI showed an unstable meniscal tear in 45/67 cases. In...

Conclusion

This new approach to meniscus pathology gives a better management of a diagnostic- therapeutic approach in which standard MRI has not played a key role, so far

Personal information

References

Barile A, Masciocchi C, Mastantuono M, Passariello R, Satragno L The use of “dedicated” MRI system in the evaluation of knee joint diseases. Clinical MRI 1995; Vol. 5 No 2; pag.79-82 Masciocchi C, Barile A, Satragno L Muscoloskeletal MRI: dedicated systems. Eur Radiol 2000; 10: pag.250-255 Barile A, Iannessi F, Masciocchi C New developments in “dedicated” MRI the joints: the E-scan, technical and clinical considerations. Clinical MRI 2000; Vol 10 No 2 pag.39-41 Masciocchi C, Barile A, Navarra F, Mastantuono M, De Bac S, Satragno...