Introduction. RSA is a powerful research technique that is currently being studied at Hospital for Special Surgery (HSS) for joint replacement patients. RSA stands for r adio s tereometric a nalysis, which describes a special way of taking two x-rays from different directions at the same time, creating a âstereoâ image.SA has been used for over 30 years in Europe and for 5 years at Hospital for Special Surgery. The only potential risks come from implantation of the marker beads. 1  The insertion of beads takes an additional 5 to 10 minutes of surgery.
They're right not to â in the mid 19th century Brussels was a mainly Dutch-speaking city. There's been a major swing towards French since, fueled not just by migration, but also by families switching language. Even so, it was only really by the 1950s that Dutch had definitively lost its role as the city's vernacular.
Brussels is also the de facto capital of the European Union. Brussels has grown from a 10th-century fortress town founded by a descendant of Charlemagne to a sizeable city. The city has a population of 1.2 million and a metropolitan area with a population of over 1.8 million, both of them the largest in Belgium.he City of Brussels is also the capital of both the French Community of Belgium and the Flemish Community. The Flemish Parliament and Flemish Government have their seats in Brussels, as do the Parliament of the French Community and the Government of the French Community.