More than a year after a world-first surgery, Sydney Zoo orangutan Santan is climbing, exploring and moving independently again. NewsWire HandoutMore than a year after a world-first surgery, Sydney Zoo orangutan Santan is climbing, exploring and moving independently again. NewsWire Handout Credit: NewsWireMore than a year after world-first surgery, Sydney Zoo orangutan Santan is moving independently again. Camera Icon More than a year after a world-first procedure, Sydney Zoo orangutan Santan is climbing independently again. Santan the orangutan is climbing elevated platforms and using ropes again at Sydney Zoo after groundbreaking treatment for chronic pain caused by severe arthritis.