Identification of clinical phenotypes in knee osteoarthritis : a systematic review of the literature
Background: Knee Osteoarthritis (KOA) is a heterogeneous pathology characterized by a complex and multifactorial nature. It has been hypothesised that these differences are due to the existence of underlying phenotypes representing different mechanisms of the disease. Methods: The aim of this study is to identify the current evidence for the existence of groups of variables which point towards the