We will have to know if you dislocated your patella before. It all depends also on how old you are, and what activities you want to do. If you are <40, the examples above are suitable. In addition to Vastus Medialis strengthening, you should focus on your core muscles, which studies have shown can help to realign the normal alignment of your knee cap. If this fails, sometimes surgery is required, but does require a CT scan to see what your bony alignment is like before determining what surgery you should receive. All the examples above are options. (Tibial Tubercle Distalisation or Medialisation; MPFL reconstruction; Trochlearplasty). It is a difficult condition to treat once you have bad arthritis. In Australia, patellofemoral joint replacements are relatively uncommon and require a surgeon who has experience in this.
The rest of your MRI show generalised arthritis, so I would opt to treat your knee with a total knee replacement, as a patellofemoral replacement is likely to fail in your case.