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 just a few kilometres north of the boundary between Belgium's language communitiesâFrench in the south, Dutch in the north. Historically a Dutch-speaking city, it has seen a major shift to French since Belgian independence in 1830.espite what its name suggests, the Brussels-Capital Region is not the capital of Belgium in itself. Article 194 of the Belgian Constitution establishes that the capital of Belgium is the City of Brussels, the municipality within the capital region that once was the city's core.