Weak chin. Will orthognathic surgery fix my low hyoid? (Photo)

Orthognathic surgery will have little effect on the position of the hyoid bone. Isolated geniioplasty or chin surgery, would improve the overall neck/jawline angle and diminish the appearance of a prominent hyoid but not alter the position as well. A chin implant or genioplasty surgery would improve the appearance of a weak chin.

I would recommend trying some filler or even a chin  implant before ortho surgery. The recovery and risks of both of those is significantly less. If it is purely a cosmetic thing you are treating we have many options.Hope this helps,Best of luck,DrC

chin and jaw are connected to hyoid bone and if advanced Would pull this bone up. Presurgical orthodontics are most likely needed which take about 14-16 months.