Platysmaplasty or not in a lower facelift?

The two platysma bands need to be tightened in the midline to control the contour beneath the chin (submental). The lateral platysma muscle can also be tightened to give better contour.
Skin tightening alone does not control these bands. Make the right decision. Good luck! 

A neck lift (platysmaplasty) always gives a little better result when done with a lower facelift. Be sure to get them done under local and enjoy the new you.

I would say in general most 59 year olds would need a platysmaplasty which is tightening the loose and separated vertical muscle bands that run from under your chin to you collarbone.  These muscle bands create the dreaded "turkey neck."  There are some exceptions but without photos the experts here can not make definitive comments.  Make sure you surgeons have done hundreds of face and neck lifts and are comfortable with these procedures.  Best of luck!