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· DOS Abstracts
Diagnostic value of magnetic resonance imaging on
meniscal healing after meniscal repair
Emilie Faunø, Ole Gade Sørensen, Claus Tvedesøe, Torsten Grønbæk Nielsen,
Peter Faunø, Martin Lind
Department of Sports Traumatology, University Hospital of Aarhus; Department
of Sports Traumatology, University Hospital of Aarhus; Department of Radiology,
University Hospital of Aarhus; Department of Sports Traumatology, University
Hospital of Aarhus; Department of Sports Traumatology, University Hospital of
Aarhus; Department of Sports Traumatology, University Hospital of Aarhus
Background:
Lack of healing after meniscus repair is seen in 25-30 % of pa-
tients. The role of magnetic resonance imaging (MRI) as a diagnostic tool in
patients with clinical symptoms after meniscal repair, is not well described.
Purpose / Aim of Study:
To compare the diagnostic value of MRI with sec-
ond-look arthroscopy after meniscus repair in patients with clinical symptoms
of an unhealed meniscus.
Materials and Methods:
Eighty-two patients (34 women, 48 men, 83 me-
nisci) with a mean age of 24.4 years were included. All patients had primary
meniscus repair. MRI and second-look- arthroscopy were performed due to
clinical symptoms of an unhealed meniscus. The MRIs were analysed for menis-
cal healing by a radiologist blinded for clinical data. Second-look arthroscopy
recordings were equally examined and used as gold standard. The sensitivity,
specificity, positive predictive value (PPV), and negative predictive value (NPV)
of MRI regarding meniscal healing were calculated.
Findings / Results:
MRI analysis found 22 (26.5 %) healed menisci and 61
(73.5%) unhealed, whereas second-look arthroscopy found 15 (18.1%) healed
menisci and 68 (81.9%) unhealed menisci. Sensivity, specificity, PPV and NPV
respectively were calculated for MRI overall: 0.85, 0.80, 0.95, 0.55 and the
five most frequently used MRI sequences: sagittal STIR: 0.69, 0.75, 0.95, 0.30;
sagittal pd: 0.29, 0.83, 0.89, 0.20; sagittal T2*: 0.33, 1.00, 1.00, 0.26; coronal
T1: 0.26, 1.00, 1.00, 0.25; axial STIR: 0.15, 0.88, 0.88, 0.15.
Conclusions:
MRI provides an acceptable sensitivity and PPV in diagnosing an
unhealed meniscus after repair. Sagittal STIR has the highest sensivity and NPV,
whereas sagittal T2* and coronal T1 have the highest PPV.
No conflicts of interest reported
95.