Preoperative Delayed Gadolinium-Enhanced Magnetic Resonance Imaging of Cartilage (dGEMRIC) for Patients Undergoing Hip Arthroscopy

Methods: Between August 2008andApril 2012, sixty-five patients (seventy-four hips) underwent primary hip arthroscopywith preoperative dGEMRIC and a minimum of two years of follow-up. Exclusion criteria were previous hip surgery, slipped capital femoral epiphysis, inflammatory arthropathy, Legg-Calvé-Perthes disease, and arthritis of >1 Tönnis grade. Patients were classified in two groups on the basis of a dGEMRIC cutoff of 323 msec, which was one standard deviation (SD) below the study cohort mean dGEMRIC index of 426msec. Patient-reported outcome tools used included themodified Harris hip score (mHHS), theNonarthritic Hip Score (NAHS), theHip OutcomeScore Activities of Daily Living (HOS-ADL), and theHip OutcomeScore SportSpecific Subscale (HOS-SSS) as well as a visual analog scale (VAS) for pain and a patient satisfaction score.