Ultrasound-guided therapeutic injections aid physicians and other health care providers in treating joint problems by reducing inflammatory pain or by relieving pain through supplementing your joint fluid, depending upon which substance is injected into a patient. A variety of substances can be injected, including cortisone and viscosupplements. SOS uses a high quality Sonosite M-Turbo Ultrasound Unit for the injections, whose image guidance can help improve the accuracy of the injection.