Chin Implant Replaced and Now Limited Lower Lip Movement

A described complication of chin implant placement is temporary or permanent injury to the sensory nerves that supply the lower lip.  The condition described in this scenario sounds like a weakness of the motor nerve that supplies the lower lip (marginal mandibular branch of the facial nerve); injury to this nerve is very unusual because it is much more superficial and lateral to the plane of dissection for a chin implant. If there is a weakness to this nerve, it is likely related to swelling and should resolve reliably over time.  Oral steroids (prednisone) can be beneficial in this scenario.  I recommend you keep in close contact with your Surgeon for monitoring and reassurance.

The larger implant and the swelling from surgery are the most likely cause of the decreased mobility.  I doubt it has anything to do with your motor nerves.  As with any tissue expansion, the elasticity of the overlying skin and muscle will be reduced for a period of time, and you are only three weeks out.   As your body resolves some swelling, and stretches to accommodate the larger implant, your elasticity will improve.  And that's when your smile will be back as well.   It will be a few more weeks, but stay patient.

Dear SanDiego,

It can be hard to differentiate numbness and movement of the lower lip.  It is pretty rare to have an injury to the nerve that moves your lower lip just because that nerve is located near the angle of the jaw, and not in the midline where most chin implants are placed.  The decreased movement of your lower lip is probably due to swelling and should resolve over time.  3 weeks is still pretty early and it looks like you are still going through changes.  Just be patient, your body is just getting used to the bigger implant.

Best,

Nima Shemirani