Best Technique For Lifting Center of Buttocks? (photo)

Thanks for the sending along a photo.  Of course a consultation with a direct physical exam of the area would be more telling, but typically a Buttock Tuck is recommended for this problem.  It is somewhat like a tummy tuck but is performed at the lower horizontal crease of the buttock cheeks where they meet the back of the thighs.  With this procedure, the shape of the buttock cheeks can be more rounded out and lifted upward.  Because not many surgeons have experience doing many of these procedures make sure to seek consultation with a board certified   plastic surgeon who does.  Best of luck!...RAS

Hello dear!
Thanks for the pictures and provided information as well.
Based on your photos, you are a good candidate for a procedure called buttock tuck, to fix your problem and improve your buttocks, and I think you'll get very good results. 
l recommend you to make an in-person consultation with a board certified plastic surgeon for a proper answer and to talk about your goals and anything you need to know.
Good luck :)
 

You have what seems to be sagging of the medial part (near the thigh) of the buttocks.

This is the most difficult to lift, I found that only one technique works, that is an incision in the crease of the buttock all the way around the anal opening on both sides and do the lift that way and the incision is well hidden