Does prestructural, asymptomatic cartilage degeneration occur in early FAI? A T1rho study.
Gerd Melkus 1 , Kawan S Rakhra 1 , Arturo Cardenas-Blanco 2 , Andrew Speirs 3 , Ian Cameron 1 , Mark E Schweitzer 4 , and Paul E Beaul 5
Department of Medical Imaging, The Ottawa
Hospital, Ottawa, Ontario, Canada,
Center for Neurodegenerative Diseases, Magdeburg,
of Mechanical and Aerospace Engineering, Carleton
University, Ottawa, Ontario, Canada,
of Radiology, Stony Brook University, Brookhaven, New
York, United States,
of Orthopedic Surgery, The Ottawa Hospital, Ottawa,
In this study T1rho MRI of hip cartilage was performed
in three different subject groups: Controls,
asymptomatic subjects with cam deformities (Bumps) and
symptomatic (Surgical) cam-type femoroacetabular
impingement (FAI) patients. The ratio of T1rho of the
anterior to the posterior hip hyaline cartilage in the
peripheral weight-bearing region of the joint resulted
in statistically significant differences between the
Control and the Bump group, the Control and the Surgical
group, but not between the Bump and the Surgical group.
Quantitative T1rho imaging and T1rho ratio analysis has
the potential to detect cartilage proteoglycan loss in
subjects with symptomatic cam deformities, prior to
development of symptomatic cam-FAI.
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