BROOKFIELD, Ill. (AP) — You may have heard about an Amur tiger at a zoo near Chicago getting hip replacement surgery. Well, the latest on that story is: the Amur tiger has undergone more hip surgery. Officials at the Brookfield Zoo say the original hip implant had to be removed — because 10-year-old Malena dislodged the replacement joint within hours of getting it. A team of animal specialists did another procedure to help Malena form a fibrous joint — and have her leg muscles provide stability for the area. The Zoo hopes the new surgery will help Malena have better use of her leg — and ease the pain that caused her to need the surgery in the first place.