A 2025 systematic review just pulled 54 years of facial implant data and landed on a 4.4 percent complication rate covering infections, nerve damage, displacement, and revision surgeries — and that is the number jaw surgery forums have been debating without ever actually having. Here is the part that stings: a lot of the jaw definition guys are going under the knife for already exists underneath their facial fat, which the anatomy literature confirms responds directly to body composition changes. The surgery is real, the results are permanent, and the risk is documented — but for a chunk of these patients, a cut is literally all they needed.