How successful is any form of lipo after age 60-65? Any case studies?

There is a great deal of variability among humans, so it is always imperative to focus on the individual.  Liposuction may be appropriate, but an exam or pictures would be necessary for an evaluation.

Great liposuction results can be achieved at any age. For best results, it's recommended to be at or near an ideal weight and will depend on skin laxity. If there is skin laxity, surgery can be performed at the same time. I recommend a hi definition procedure to get the best results. I use VASER HI DEF with ThermiRF and fat grafting to get the most fat removal, skin tightening, contour and definition. I recommend getting a formal evaluation with a hi definition physique expert. Best, Dr. Emer

the main consideration here is the ability of your skin to tighten up after removal of the underlying fat. You should see a board-certified plastic surgeon to evaluate you for this procedure. They could probably give you a very idea of what you may expect as the final result. With this, you can make the decision whether to go ahead with surgery or just leave the area alone.