Dancing with the Stars 'Dancing with the Stars' Ralph Macchio suffers ruptured cyst on knee 05/09/2011 Ralph Macchio said via Twitter he hopes a ruptured cyst on the back of his knee doesn't keep him from performing on "Dancing with the Stars." Read More RELATED NEWS Samantha Harris to undergo double mastectomy for breast cancerKarina Smirnoff and baseball fiance Brad Penny set wedding dateHines Ward: I was so scared to dance before 'Dancing with the Stars' TAGS: Dancing with the Stars Karina Smirnoff Ralph Macchio
