In short. What the motor branches control, why weakness is usually temporary but not always, what to watch for in the first hours, and why the first day matters most.
Key points
- Numbness is expected and can be ignored.
- Movement is what you are checking.
- Lift the eyebrows, close the eyes tightly, smile, puff out the cheeks.
Any honest account of this operation has to include the nerves that move the face, because the dissection passes close to them and the consequence of meeting one is serious. The point is not to frighten a reader out of an operation, but to make sure that someone who agrees to it knows what was agreed, and knows what to do in the hours when it would matter.
What the branches control
These are the motor nerves, the ones that produce movement rather than sensation. Their branches supply the forehead, the muscle that closes the eye, the cheek, the upper lip and the mouth. An injury does not produce numbness, which is why the two are so often confused. It produces an absence of movement: a brow that will not lift, an eye that does not fully close, a smile that is asymmetric. That distinction separates a sign that is expected from one that must be reported immediately.
Look at your own face on the first evening
Numbness is expected and can be ignored. Movement is what you are checking. Lift the eyebrows, close the eyes tightly, smile, puff out the cheeks. Do it deliberately and do it early. If one side does not do what the other does, that is a finding for the team the same hour, not something to mention at the follow-up appointment. Reporting early is not an overreaction; it is what the first day is for.
Usually temporary, not always
When weakness appears, the usual course is that it improves over weeks to months as the nerve recovers from the handling it received. That is the common outcome. It is not the only one. Occasionally the injury is more than a temporary problem, and the movement does not return to what it was. This is uncommon, and no honest surgeon will give you a figure for it. Anyone who does is guessing, and anyone who tells you it always resolves is not describing the operation accurately.
What cannot be undone
If the weakness does not recover, some of it is not correctable. Reconstructive work can rebalance a face and improve how it functions, and it is a different kind of operation with its own limits. It does not reliably restore a natural smile. That asymmetry of consequence — a temporary problem most of the time, a lasting one sometimes, with no way to know in advance which — is why this risk belongs in the first conversation rather than in a form signed on the morning.
What a patient should never be told
- That the nerve cannot be reached, when the dissection is close to it by design.
- That weakness always recovers.
- That a problem noticed on the first night can wait until the morning.
The nerve conversation is the clearest test of a consultation. A surgeon who raises it unprompted and explains how it would be handled is treating the patient as someone making a decision. One who reaches it only when asked has left the patient to find out elsewhere.
Frequently asked questions
What would facial nerve weakness actually look like?
It shows as a loss of movement rather than a change in feeling: one side of the forehead not lifting, an eye that does not close fully, a mouth that does not move symmetrically when you smile, or a cheek that does not hold air when you blow out. Numbness is a different thing entirely and is expected after any lift. The distinction matters, because numbness is normal and weakness is not.
If weakness appears, does it always recover?
Most commonly it settles over weeks to months, and that is the usual course. It is not always the course. Occasionally the weakness is more than a temporary conduction problem, and the movement does not come back to what it was. Any surgeon who tells you it always recovers is not describing the risk accurately, and that itself is information about the practice.
How is it watched after the operation?
The first hours matter most, because that is when a problem is either recognised or missed. The practical instruction is to look at your own face in a mirror early, deliberately, and to tell the team immediately if one side is not moving the way the other is. Waiting until the morning, or assuming it is the swelling, is the mistake that costs time.
Risks & Limitations
- A deep plane lift is a longer operation under a longer anaesthetic. The branches of the nerve that move the face are closer to the dissection: weakness is usually temporary, and not always.
- A collection of blood under the skin is the commonest early complication and the reason the first night matters. One-sided swelling, increasing pressure or pain that is worsening should be reported the same hour, not in the morning.
- Skin at the incision edge can heal poorly or be lost, and the risk rises with smoking and with previous surgery. Scars are permanent and mature over a year or more.
- Swelling at this depth settles more slowly than after a skin-based lift. Three months is too early to judge, and a revision considered before twelve months should be examined very carefully.
When to Seek Care
- Swelling on one side of the face or neck that is increasing, pain that is worsening rather than easing, or a collection of blood under the skin — telephone the team the same hour, day or night.
- Any loss of movement rather than feeling: a brow that will not lift, an eye that does not close fully, or a smile that is asymmetric — report it immediately.
- Fever, spreading redness, warmth or discharge around an incision, or a wound that opens.
- Difficulty breathing, chest pain or a calf that is swollen and tender — seek emergency care at once.
References & Further Reading
- American Society of Plastic Surgeons (ASPS) — facelift and deep plane technique guidance
- National Institute for Health and Care Excellence (NICE, UK) — guidance on surgical safety and shared decision making
- Cochrane Library — systematic reviews in facial rejuvenation and wound care
- British Association of Plastic, Reconstructive and Aesthetic Surgeons (BAPRAS) — patient information on facial surgery
- Chinese Medical Association Plastic Surgery Branch — clinical guidance
This page is patient education, not medical advice, and it does not cite individual studies. Discuss your own case with a qualified clinician. To arrange an assessment at Chongqing West District Hospital, see Contact & Consultation.