I Have Arthritis In Both Knees And Bone On Bone

I have arthritis in both knees and bone on bone in knees. Very difficult to walk up and down stairs. If I stay on my feet too long the ligament that's located behind the knees starts hurting making it very difficult to walk without crutches. Also sometimes my right knee will buckle on me. I'm wondering if there's a treatment and if there's possibility that it might get better?