What this site is for

This is a patient decision guide, not a textbook. The anatomy of the lower face and the way a profile is analysed sit on the Facial Aesthetic Surgery hub, and the operations themselves are described on the chin and jaw sites. What this site adds is the part a patient has to do alone: understanding that a recessed chin has three different explanations, working out which one applies, and knowing what each treatment changes and what it leaves exactly as it was.

Who writes it

The guides are written by the clinical content team of the Plastic Surgery & Aesthetics Medical Center at Chongqing West District Hospital and medically reviewed by Tongchun Mao, MD, Deputy Director and Head of Aesthetic Surgery, who performs this surgery here. Every page carries the reviewer's name and the date it was last reviewed. Nothing on this site is attributed to a clinician who has not read it.

What we deliberately do not publish

No prices, because a real figure depends on the extent of the treatment, the anaesthetic, the facility and how many stages are involved, and a number invented for a web page misleads more than it helps. No brand names for medicines or devices. No dosages. No claims that a particular result will be achieved, and no before-and-after images used as evidence, because the result in one face does not predict the result in yours.

The limits of a website

Nothing here can tell you which of the three causes is yours. That requires an examination of the profile in the right conditions, the relationship of the teeth and the position of the jaw, and sometimes an orthodontic opinion — findings that take minutes in person and cannot be produced through a screen. Use this site to arrive at a consultation with better questions, and treat any answer you receive here as general information rather than advice about you.