Gender Affirming Procedures

Why doesn’t bone grow back after facial feminization surgery?

A frequent concern after facial feminization surgery (FFS) is whether the bone removed or reshaped, such as along the brow ridge or jaw, will grow back. It’s easy to see why this question arises. The body is remarkably good at repair: skin closes over cuts, nails regrow, and broken bones knit themselves together. From that everyday experience, it seems logical to assume that surgically reduced facial bone could regenerate in the same way. This assumption, however, can create unnecessary anxiety and blur expectations about long‑term outcomes.

Fortunately, once the facial bone is contoured during FFS, those changes are permanent. Adult facial bones lack the growth plates necessary for new bulk, and the precise surgical techniques leave no surfaces for significant bone regeneration. The body will remodel the new contours at a microscopic level, but it cannot recreate the removed thickness or height. Thus, the refined facial structure achieved through FFS remains stable and lasting.

Understanding Bone Growth 

Inside each bone are tiny cells (osteoblasts and osteoclasts) that constantly build and break down bone in a cycle called remodeling. When you’re still growing, generally until your late teens, special “growth plates” at the ends of long bones help you get taller. Once those plates close, bones can still repair cracks, but they no longer lengthen or bulk up on their own just because tissue was removed.

Here’s how bone heals after surgery: 

  • Inflammation (days 1‑7): Blood brings repair cells to the site.
  • Soft Callus (weeks 1‑3) – The gap fills with a cartilage‑like material.
  • Hard Callus (weeks 3‑8) – Cartilage slowly turns into new bone.
  • Remodeling (months to years) – Extra bone is trimmed and shaped by the body.

When a bone breaks, it can heal because both pieces remain in place and are positioned close together. The body can form new bone tissue between the two ends, effectively reconnecting them. To support this process, doctors often use casts, plates, or screws to keep the bone stable and aligned during healing.

In contrast, during facial feminization surgery, a small section of bone is intentionally removed to change the shape of the face. Because there is no opposing bone surface left behind, the body does not have a structure to build across. Without two ends to bridge, the body cannot regenerate new bone in that area. As a result, the reshaped bone remains as it was surgically contoured, and the removed portion does not grow back.

Some of the factors that affect bone repair include: 

  • Age 
  • Nutrition (calcium, vitamin D, protein)
  • Blood supply 
  • Smoking/certain medications 
  • Surgical techniques 

What Happens to Bone in Facial Feminization Surgery

Facial feminization surgery (FFS) is customized for each person, but several main procedures are often done to create a softer, more feminine look:

  • Forehead contouring involves shaving down a prominent brow ridge and may also include repositioning bone over the sinus area. This reduces a bulky upper face and creates a smoother, more rounded forehead.
  • Orbit roof contouring and brow lift adjust the bones around the eye sockets and raise the eyebrows. These changes open up the eye area and give it a softer, more alert look.
  • Rhinoplasty reshapes the nose by refining cartilage and, in some cases, adjusting the underlying bone. This results in a narrower, more delicate nasal bridge and tip.
  • Jaw (mandibular angle) reduction removes the outer layer of the jawbone and rounds off sharp angles. This transforms a square or broad jawline into a more tapered, heart-shaped profile.
  • Chin (genioplasty) modifies the chin by sliding, shortening, or reshaping the bone to decrease its width and height. This gives the lower face a more balanced, refined appearance.
  • Adam’s apple reduction (tracheal shave) removes part of the thyroid cartilage to lessen the prominence of the throat. Though it doesn’t involve bone, it is often done alongside facial bone work to complete the overall transformation.

Most changes during FFS involve trimming or thinning the outer layer of facial bones rather than cutting bones completely, like in fracture repair. Surgeons use precise tools, often motorized burrs similar to dental drills, to carefully remove bone until the desired shape is achieved. In some cases, like chin reshaping, a small plate may secure the repositioned bone, but typically, no large sections are removed and reattached.

As only excess bone is removed and the remaining surfaces sit flat, the body treats the area like a healed fracture. It may go through slight microscopic remodeling, but the removed bone does not grow back or regain volume.

Why Bones Don’t Grow Back After FFS

  • Lack of growth plates: Facial bones finish their length‑wise growth around puberty. Without active plates, they cannot add sizable new mass on their own.
  • No bridging surfaces: Bone regrowth depends on two raw ends being close together under pressure. FFS removes bone entirely, leaving no opposing surface across a gap.
  • Burring vs. fracturing: Surgeons file down ridges, not large blocks, so the body merely smooths the new surface. The inner spongy bone remains healthy. The body remodels the new surface smoothly, but doesn’t “re‑inflate” what was sanded off—just like wood planed from a table doesn’t reappear.
  • Holding the Bone in Place: Sometimes during surgery, a piece of bone is moved, like in chin reshaping. To keep it steady while it heals, doctors use small metal plates or screws. The bone heals where it was moved and connects at the edges. But the part of the bone that was trimmed or shaved off doesn’t grow back.
  • Intentional biologic limits: Surgeons work within safe thicknesses to avoid damaging nerves or roots of teeth. Removing more than the body can seal would weaken the bone; surgeons avoid that zone.
  • Soft‑tissue memory: Muscles, skin, and fat layers adapt to the new contour. Even if microscopic bone regrowth occurred, it would be reshaped constantly by daily muscle pull, keeping the profile stable.

Post‑Surgery Care & Expectations 

Swelling peaks in the first two weeks, then gradually drops over months. Most patients return to school or work within 2‑3 weeks, though bruising may linger.

What to expect:

  • Numbness & tingling: Nerves need months to regrow; sensation slowly improves.
  • Diet changes: Soft foods for 1‑2 weeks after jaw or chin work.
  • Activity limits: No heavy lifting or contact sports for about six weeks.
  • Scar care: Incisions are often hidden in the hairline or inside the mouth, but gentle cleaning and sunscreen are crucial.
  • Your role in long‑term success: Follow your surgeon’s instructions on medications, sleeping position, and follow‑up visits. Avoid smoking and maintain balanced nutrition—your bones and skin need oxygen and vitamins to heal into their new shape.

Conclusion

Facial feminization surgery reshapes, removes, or repositions specific bone areas to create softer, more traditionally feminine features. Because facial growth plates close in adolescence and the removed bone lacks an opposing surface to bridge, the trimmed portion does not grow back. 

Small remodeling happens internally, but the new contour remains for life, provided you protect it during healing and maintain overall bone health. Understanding this helps patients set realistic expectations and focus on the exciting changes ahead. 

For detailed guidance on facial feminization surgeries or to request a private consultation, please visit feminizationsurgeries.com and connect with Dr. Javad Sajan, a trusted specialist in facial feminization surgery.