The present invention provides a new dosing regimen for administration of FGF18 in the treatment of a cartilage disorder, such as osteoarthritis or cartilage injury. Specifically provided is a preferred treatment scheme comprising administrations every 3 weeks, 4 weeks or 5 weeks of an FGF-18 compound per treatment cycle. The new dosing regimen can include the co-adminsitration of a anti-inflammatory drug.