V-line surgery is one of the most-requested — and most-misunderstood — operations in Korean cosmetic medicine. It is not a single procedure. It is a planned combination of bone work that reshapes the lower third of the face, and it carries the highest stakes of any common Korean cosmetic surgery.
If you are considering it, you owe yourself a clear picture of what is being cut, what can go wrong, and what recovery actually demands. This guide is that picture.
What "V-line surgery" actually means
V-line surgery typically combines two operations:
- Mandibular angle reduction (jaw shaving) — the prominent corner of the lower jaw is cut and contoured to soften the angle and narrow the lower face from the front view.
- Genioplasty with T-osteotomy — the chin bone is cut, a vertical wedge is removed (the "T"), and the bone is repositioned narrower, often slightly forward or upward, then fixed with titanium plates and screws.
Together, these two cuts narrow both the chin point and the jaw angles, creating the "V" silhouette from the front.
What it cannot do
V-line surgery does not change the cheekbones, midface, or soft-tissue volume. If the upper face is wide, the result will look proportionally narrower at the bottom but will not narrow the whole face. Patients sometimes add zygomatic (cheekbone) reduction in the same operation — a separate surgery with its own risks.
It also cannot fully correct skin laxity. Older patients or those with thin, inelastic skin may end up with sagging tissue over a smaller bony framework. A skin-tightening procedure or thread lift may be discussed for select cases.
The risks you must understand before signing
This section is the entire reason this article exists. Mandibular surgery has the highest complication potential of common Korean cosmetic procedures.
1. Inferior alveolar nerve injury
The inferior alveolar nerve runs through a canal inside the mandible and supplies sensation to the lower lip and chin. Aggressive bone cutting can stretch, bruise, or sever this nerve. Most patients experience some temporary numbness; a small percentage have permanent altered sensation. The risk rises sharply with very aggressive angle reduction.
2. Bleeding and hematoma
The mandibular angle is highly vascular. Significant bleeding during or after surgery is the reason general anesthesia and overnight observation are standard, and the reason this surgery should never be performed in an outpatient day-surgery office without anesthesia coverage.
3. Asymmetry
The two sides of the jaw are not perfectly symmetric to begin with. Surgeons aim for matched cuts, but post-operative swelling can mask asymmetry for weeks. A small revision rate exists in even excellent practices.
4. Skin laxity
Removing bone without considering soft-tissue elasticity can leave the lower face looking deflated. Patient selection — especially around age and skin quality — is critical.
5. Bone irregularity and condylar issues
Aggressive angle reduction can occasionally produce a "second angle" appearance where the cut is visible as a step-off. Skilled surgeons taper the cut to avoid this.
Who should not have V-line surgery
- Patients seeking the operation as an emotional response, not a stable considered choice. Reversibility is essentially zero.
- Patients with realistic-but-unrealizable expectations — "I want to look like [celebrity]" without similar bone structure.
- Patients with bleeding disorders, uncontrolled hypertension, or active infection.
- Patients unwilling to commit to a 2-week minimum stay and a strict liquid-then-soft diet.
Recovery — what actually happens
- Day 0: general anesthesia, intraoral incisions (no external scars), titanium plate fixation. Overnight stay.
- Day 1–2: significant facial swelling, drainage from the incisions, compression garment. Liquid diet only.
- Day 3–7: swelling peaks around day 3 and begins to drop. Soft-food diet introduced cautiously.
- Day 14: intraoral sutures removed. Most patients are presentable but still visibly swollen.
- Week 4–8: 70–80% of swelling is gone. Final shape continues to refine.
- Month 3–6: final result. Bone fully consolidated.
You will sleep elevated, take antibiotics, and wear a compression garment continuously for several days. Eating, speaking, and brushing your teeth are uncomfortable in week one. Plan accordingly.
Choosing a surgeon
Mandibular surgery is a maxillofacial speciality. The right surgeon has:
- Board certification in plastic surgery or oral and maxillofacial surgery (OMFS).
- High monthly case volume — bone surgery rewards volume more than almost any other procedure.
- Hospital-grade facilities with on-site anesthesiologist, blood-bank access, and a transfer agreement with a tertiary hospital.
- 3D CT-based pre-operative planning, not just front-and-side photos.
- Honest before/afters that show 6–12 month results, not week-1 swelling reductions.
Cost ranges in Gangnam (2026)
- Mandibular angle reduction only: USD 5,000–8,000.
- Genioplasty / T-osteotomy only: USD 3,500–6,000.
- Full V-line (angle + T-osteotomy): USD 8,000–15,000.
- Add zygoma reduction: + USD 5,000–8,000.
This surgery can produce dramatic, beautiful results in the right candidate with the right surgeon. It can also produce permanent nerve injury and disappointment in the wrong combination. Take more consultations than you think you need.