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Assessment of osteoarthritis in hips with femoroacetabular impingement using delayed gadolinium enhanced MRI of cartilage
Author(s) -
Jessel Rebecca H.,
Zilkens Christoph,
Tiderius Carl,
Dudda Marcel,
Mamisch Tallal Charles,
Kim YoungJo
Publication year - 2009
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/jmri.21830
Subject(s) - femoroacetabular impingement , medicine , osteoarthritis , radiography , radiology , magnetic resonance imaging , nuclear medicine , sagittal plane , cartilage damage , deformity , articular cartilage , pathology , alternative medicine
Abstract Purpose To determine the feasibility of assessing early osteoarthritis (OA) in hips with femoroacetabular impingement (FAI) using delayed Gadolinium enhanced MRI of Cartilage (dGEMRIC). Materials and Methods Thirty‐seven hips in 30 patients who had a dGEMRIC scan and radiographic evidence of FAI were identified. Clinical symptoms were assessed. Radiographic measurements were performed to determine acetabular and femoral morphology. The severity of radiographic OA was determined using Tönnis grade and minimum joint space width (JSW). On MRI, the alpha angle was measured on the sagittal oblique slices. Correlations between dGEMRIC index, patient symptoms, morphologic measurements, radiographic OA, and age were determined. Results Significant correlations were observed between dGEMRIC index, pain ( P < 0.05), and alpha angle ( P < 0.05). The correlation of dGEMRIC with alpha angle suggests that hips with more femoral deformity show signs of early OA. Conclusion The results of osteoplasty for FAI depend on the amount of pre‐existing OA in the joint. dGEMRIC may be a useful technique for diagnosis and staging of early osteoarthritis in hips with impingement. J. Magn. Reson. Imaging 2009;30:1110–1115. © 2009 Wiley‐Liss, Inc.