Viewers weren't the only ones injured watching Shannen Doherty attempt to shake her booty on "Dancing with the Stars" ... just take a look at her partner Mark Ballas on crutches.
With Shannen and DWTS judge Carrie Ann Inaba at his side, Mark limped through NYC after appearing on "Live with Regis & Kelly" on Thursday.
Mark's busted knee will keep him out of commission for at least six weeks.
