Perth Zoo funds raised have been used for the conservation of Sumatran orangutan, Sumatran tiger, Sumatran elephant, African painted dog, sun bears, tree kangaroos, Javan gibbons and Australian native species. More than $881,000 has been raised since the program began. Working with the Department of Environment and Conservation, Perth Zoo breeds threatened Western Australian animal species for release into managed areas of habitat in the wild as part of its Native Species Breeding Program. As of 2011, Perth Zoo breeds numbats, western swamp tortoises, dibblers, woylies and threatened Western Australian frog species. The numbat ("Myrmecobius fasciatus") Western Australia's mammal emblem and one
Hip replacement carried out in Germany in 1891 by Themistocles Gluck (1853–1942), who used ivory to replace the femoral head (the ball on the femur), attaching it with nickel-plated screws, Plaster of Paris, and glue. On September 28, 1940 at Columbia Hospital in Columbia, South Carolina, American surgeon Dr. Austin T. Moore (1899–1963) performed the first metallic hip replacement surgery. The original prosthesis he designed was a proximal femoral replacement, with a large fixed head made of the cobalt-chrome alloy Vitallium. It was about a foot in length and bolted to the resected end of the femoral shaft (hemiarthroplasty). A later version,