Channel 5’s Liz Brunner was at the USS Constitution Museum the other night to moderate “Old Sports: Geriatrics Meets Sports Medicine,” a Rogerson Communities panel discussion with Brian McKeon , orthopedic surgeon and chief medical officer for the Boston Celtics, and Cambridge Health Alliance Chief of Geriatrics Anne Fabiny . Brunner not only moderated the discussion, she also did balance exercises for the audience. . . . Shayna Seymour of “Chronicle” emceed Friday’s United Way Women’s Leadership Breakfast at the Westin Copley. The morning’s speaker was Steve Pemberton, who wrote “A Chance in the World,” and guests included Mass. first lady Diane Patrick and event chairs Kathy MacVarish, of State Street; Rebecca Chasen of Deloitte; and Ellen King, of Sun Life Financial.