Bobby Orr and six other Original Six defensive greats ... At 66 years old, Orr still looks youthful, aside from the fact that his two knee replacements give him a noticeable limp.

Hall of Fame blueliner Bobby Orr’s career as a Boston Bruin ended in a Nov. 26, 1975 contest in which Orr registered one goal and one assist on a bad left knee. Orr had surgery to repair the ...