In this study, a total of 219 subjects from the MOON nested cohort will be studied at CCF, Vanderbilt and OSU, Table 1. Among them, some will have added MRI during their 10-year visit for the MOON study. Some subjects who finished their 10-year visit for the MOON Onsite study already will be called back to have MRI. PROMs and other information of these subjects will be collected through the MOON study.~In addition, 30 age-, sex- and BMI-matched control subjects (10 from each site) will be recruited and scanned for MRI. PROMs (KOOS, IKDC, Marx, SF-36) will be collected from these controls.~Among the 10 controls recruited locally at CCF, five will also travel to OSU and Vanderbilt to be scanned at the other two sites for cross-validation among the three sites. There will be a separate consent for the 5 controls that will be traveling to each of the 3 sites for the scans. The remaining 25 controls will be tested at only their local site.
In this study, a total of 219 subjects from the MOON nested cohort will be studied at CCF, Vanderbilt and OSU, Table 1. Among them, some will have added MRI during their 10-year visit for the MOON study. Some subjects who finished their 10-year visit for the MOON Onsite study already will be called back to have MRI. PROMs and other information of these subjects will be collected through the MOON study.