The Orthopedic Unit of Clíria Hospital Privado de Aveiro obtained two stars in the evaluation of clinical excellence, being the only area of this establishment submitted to SINAS evaluation by ERS – Health Regulation Authority. Clíria Hospital Privado de Aveiro maintains a level above average, according to ERS, for the clinical quality of service in the performance and follow-up of hip and knee total arthroplasty. The ERS also audited the behavior of health institutions in areas related with patient safety, facilities, comfort and equipment quality, as well as the adequacy level of services to patient needs and expectations. In all these areas, Clíria Hospital Privado de Aveiro, the Luz Saúde group establishment in this city, obtained the maximum rating of three stars. The results of this evaluation, concerning 2014, were known this week, but do not determine hospital ranking, as the health units decided which areas to submit to SINAS evaluation. SINAS is a system of evaluation of healthcare establishments’ global quality, developed by ERS – Health Regulation Authority, based on three fundamental criteria: accuracy, transparence and objectivity. The Health Regulation Authority argues that this evaluation system «strives for scientific and technical accuracy, objectivity and fairness, motivation and involvement of caregivers, transparence and intelligibility, concerning the establishments evaluated and the public in general, particularly patients».