Of all the different areas of the body, the hip joints are the most difficult to treat with PRP. If the hip joints are mild to moderately damaged, then they will usually respond favorably, however, if the damage is moderate to severe, or severe, then the regenerative treatments currently available usually won't work, and the patient is better off going to surgical joint replacement. Even with the cases that are less severe, it is frequently necessary to use placental or amniotic extracts, or autologous mesnchymal progenitor cells along with the PRP in order for it to work. Injections are made into the hip joint, and also, frequently injections will also need to be done into the substance of the joint capsule as well. These injections are performed at 6 to 8 week intervals, and may need to be repeated as much as 8 times.