How long does a butt implant last & can I shake my butt cheeks as if they are my own muscles?

Without photos it is difficult to comment, however I can say that your result is nowhere near final as you are only 3 days out from surgery.  Not uncommonly, the tissues change over the ensuing weeks and months to produce a result much better than you see today.  Remain patient for now...

No, insurance will not pay for butt implants, but there are financing companies that can help make surgery affordable.Kenneth Hughes, MDLos Angeles, CA

For any surgery, age may play a role in medical clearance but one's overall health is the most important factor.  I have performed fat transfer and buttock implants on plenty of 60+ year olds that were otherwise in excellent health pre-operatively.  Glad to help. 

Allow me to share with you some information that you may not hear elsewhere. There are only two proven safe and relatively effective methods for Buttock Augmentation and Hip Augmentation: 1) Autologous Fat Transfer (using your own fat, transferring from one area of the body to the other) and 2)...

   Intramuscular implants tend to produce a result that is less likely to have complications.  The sizing will vary based upon manufacturer, size, shape, and amount of projection you want.  I have sample sizers in the office that are helpful in making this decision for the...

  500 cc implants placed in a submuscular plane would be a great deal of volume.  Placing implants that are even larger in a more superficial position should make the implants even more visible.  I would have to examine you to determine what I would recommend.Kenneth Hughes, MDLos...