What is the failure rate of Platysmaplasty with Dissolvable Internal Sutures?

I have used dissolving sutures (PDS long acting) for this problem in our practice for over 10 years with excellent results.  The sutures have to stay for 2-3 months, if they dissolve sooner, then the lift may sag.

Platysmaplasty is surgical rejuvenation technique of the neck that is long lasting. It is usually performed with dissolvable sutures that hold the new reshaped platysma muscle until it heals in 3 months. Dissolvable sutures usually last for 3 to 6 months.Patients that have undergone platysmaplasty should adhere to their surgeons post-surgical recommendations and activity restrictions. Any activity that could break up the stitches before the healing process  (of the platysma muscle) happens could affect the longevity thus ruining the platysmaplasty. 

Although it doesn't happen often and would depend upon your anatomy,  I have seen platysmaplasty failure after use of dissolvable sutures.  For this reason, I usually use a combination of permanent and dissolvable sutures.