T1ρ imaging in hip cartilage: A comparative study in hips with and without cam type deformity
Gerd Melkus1,2, Helen Anwander3, Kawan S Rakhra1,2, and Paul E Beaulé3,4
1Medical Imaging, The Ottawa Hospital, Ottawa, ON, Canada, 2Radiology, University of Ottawa, Ottawa, ON, Canada, 3Orthopaedic Surgery, The Ottawa Hospital, Ottawa, ON, Canada, 4Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
In this study we
systematically investigated the analysis of hip cartilage T1ρ images in healthy
as well as asymptomatic and symptomatic subjects with cam deformities. Hips
with cam-type deformity showed a significant T1ρ prolongation compared to the
healthy subjects indicating loss of proteoglycan in the lateral third of the
anterosuperior quadrant. A significant correlation between entire hip cartilage
T1ρ values and WOMAC subscore pain was found. The study shows that in the
presence of a cam deformity, T1ρ has the ability to detect proteoglycan depletion, the earliest stage of cartilage
degeneration, even before to symptoms occur.
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