Sita M. Bierma-Zeinstra is at the Department of General Practice and the Department of Orthopaedics, University Medical Centre Rotterdam Erasmus MC, PO Box 2040, 3000 CA Rotterdam, Netherlands.Marienke van Middelkoop is at the Department of General Practice, University Medical Centre Rotterdam Erasmus MC, PO Box 2040, 3000 CA Rotterdam, Netherlands.
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Identifying different phenotypes of osteoarthritis is currently a subject of much research; however, a new systematic review has sparked discussion about the discrepancies in how research into disease phenotypes is conducted. Can we define individual phenotypes if we cannot agree on what constitutes a phenotype in the first place?Refers to Deveza, L. A. et al. Knee osteoarthritis phenotypes and their relevance for outcomes: a systematic review. Osteoarthritis Cartilagehttp://dx.doi.org/10.1016/j.joca.2017.08.009 (2017)