Can someone explain in detail how a platysma myotomy is performed? Would I be a good candidate?

It is important to make a causal diagnosis of the problem.If it is due to the platysma itself perhaps a neurotoxin suchas Botox may help relax the muscle. If this improves thesymptoms it will be diagnostic and you could continue todo the injections. A very discriminate evaluation of yourplatysma anatomy as well as the symptoms will be required.I saw a patient from another good plastic surgeon that washaving similar type of symptoms at 2 years post op. I followher with massage and conservative measures as magnesiumlactate supplements and homeopathy. Eventually the symptoms resolve. Be cautious about another operation particularly if youlike your cosmetic result. Best wishes.

platysma myotomy is done at the time of the facelift to eliminate platysma bands under the chin and then the borders of the muscles are sewn together to create a sling under the chin. The platysma is then tightened with the SMAS layer on both cheeks to complete the job. The patients will feel the tightness for a month or so, but it is usually not a long term problem. You may have had some other work under the platysma that is causing you tightness. It would be impossible to give you an answer without seeing you and reading your operative report. 

wow. I have never heard of something being too tight after a year. curious as to pictures. I am not sure releasing the platysma would work because it has all healed together at this point. you live in a great location for plastic surgeons.  I would see somebody out there