What is the best way to treat arthrosis of the hip? *physio has not been any help?

Arthosis is a general term for many hip problems so you have to specify what the exact cause of your hip arthrosis is. In general, if appropriate physical therapy fails, next step will be medication(s) and then orthopedic procedures. You should be evaluated by an orthopedist who is experienced in hip disease. A good link to read if you have not: https://stiwell.medel.com/orthopaedics/hip-arthrosis