Tom Selleck, 79, was recently spotted with large vertical scars on both knees, leading fans to speculate that the actor underwent bilateral knee replacement surgery, which may explain why he appeared to struggle walking during his first public appearance since the cancellation of his long-running show, *Blue Bloods*.
Despite denials from his representatives regarding any major health issues, Selleck has expressed disappointment over the show’s abrupt end and concerns about maintaining his 63-acre California ranch without his regular income from the series.