Riverside, a private equity firm, completed the acquisition of Nabenet, a provider of injury management and occupational rehabilitation services, for $51.5m. The company is an add-on investment to Altius Group, a provider of allied health services in Australia. "Nabenet is an excellent addition to the growing Altius platform. As the leading provider of occupational rehabilitation services in Victoria, Nabenet has been able to continuously enhance their services and add locations over the years in this expanding market," Simon Feiglin, Riverside Partner.