Providing information congruent with patient needs is important to denote patient involvement and satisfaction, and it may also affect the health-related quality of life. Shared decision making is one of the most recent models fostered by healthcare research and aims to establish a partnership between the healthcare professional and the patient. The model describes how decisions should be made. It is centered on the idea that the healthcare professional communicates medical knowledge to the patient, and that the patient's perspectives, preferences and rights are included in the clinical conversation. The exchange of knowledge and information is one of the most important preconditions to carry out shared decision making in clinical practice.