surgery procedure to widen jaw angle

[XXRyanXXL]

Is there a surgical procedure on a patient with a high mandibular plane angle to increase the lateral and vertical lengthening of the jaw without implants?

The picture I'm referencing comes from a plastic surgeon

http://www.eppleyplasticsurgery.com/jaw.html

I have an opinion from a OMS saying that I need an inverted-L osteo with impaction on upper for rotation, but could the inverted L- with bone grafts also widen the cheek bones? I have rather flat descended profile.

[UnderMunch]

It seems as if some surgeons use the chin wing procedure to "just" push the chin forward, while others only use it to lower the mandibular plane angle.

It seems though that the best results come from doing chin wing together with jaw surgery.