Background: Subchondral cysts have always been taught to be one of the cardinal
radiological features of knee osteoarthritis but are not well understood. We aimed to
evaluate the radiological prevalence and epidemiology of subchondral cysts in patients with
knee osteoarthritis to determine if they are truly a cardinal radiological feature. Methods: All
patients of a single surgeon with symptoms of knee osteoarthritis were selected for this
study. All patients had failed a trial of conservative therapy and were planned for total knee …