 Hip osteoarthritis hip OA is the second most common arthritis of the larger joints and may result in pain and disability and lead to reduced quality of life QoL. The prevalence of hip OA, in the adult population, 35 years, is estimated to 4-11 in the western society. In specific countries hip OA affects up to 25 in adults 60 years. With a growing elder population, these prevalence rates will increase and the demand for cost-effective and safe interventions will increase as well. 