Orbicularis Oculi Selective Myectomy with Autologous Microfat Grafting

Background: Facial aberrant reinnervation syndrome (FARS) is a common sequelae of facial nerve injury followed by aberrant reinnervation and recovery. Patients with FARS can present with different patterns of facial synkinesis, facial muscle hypertonicity, and facial spasm/twitching.1 Synkinesis associated with FARS is described as undesired muscle contraction when a voluntary movement is triggered. One of the most common and bothersome types of facial synkinesis is oral-ocular synkinesis, where patients experience unwanted eyelid closure with movement of the mouth such as smiling or pursing the lips. First-line treatment options for FARS include facial physical therapy and botulinum toxin selective chemodenervation. For patients with persistent or more significant symptoms, there are surgical options, including selective neurectomy and selective myectomy of the involved facial nerve branches and muscles.2,3 Selective myectomy of the orbicularis oculi muscle has been shown to be an effective surgical treatment option for oral-ocular synkinesis.3–4 There is nuance to this procedure, including deciding whether to target the upper eyelid, lower eyelid, or both, as well as which segments and how much of the orbicularis oculi muscle to remove, balancing the goals of improving synkinesis and hypertonicity while avoiding the creation of lagophthalmos. The novel implementation of autologous microfat grafting to the procedure can help improve postoperative eyelid volume and contour and may help prevent the cut edges of the muscle from fusing, thus reducing the likelihood of persistent or recurrent ocular synkinesis.