Outcome measures
Anxiety, nerve injury, paralysis, synkinesis, Depression, depressive disorders
To evaluate motor function beyond one year after facial nerve injury, the primary outcome measure will be the composite score of the Sunnybrook Facial Grading System. This scale, created by Ross et al. in 1996, assesses resting symmetry compared to the normal side for each third of the face through rating of resting symmetry, of symmetry of voluntary movements on a five-grade scale during five facial movements, and associated synkinesis. A composite score is then calculated, ranging from 0 (total paralysis) to 100 (normal) [Secondary outcome measures will include:Specific PFP-related quality of life evaluated through the Facial Clinimetric Evaluation (FaCE), a self-questionnaire validated in French [Overall perceived quality of life evaluated through the Short Form version 12 (SF 12): this is a self-questionnaire comprising 12 items evaluating quality of life. The scoring system is ordinal. Two scores are calculated, a Physical Composite Score (PCS on 26) and a Mental Composite Score (MCS on 30) [Aesthetic self-assessment collected using the FACE-Q scale; this is a ten-item self-questionnaire questioning the patient on facial aesthetics [Anxiety and depressive disorders using the Hospital Anxiety and Depression Scale (HADS): [Evaluation of compliance to and amount of self-rehabilitation in the GSC group, through the filling ratio of the diary over six months.Evaluation of the amount and type of conventional therapy in both groups, through collected data on the mean frequency and techniques used over six months.Subjective facial motor function quantification during the Créteil Scale. The Créteil Scale (CS) has been developed by Gracies and Baude in 2012 [Objective 3D facial motor function quantification through 3D wearable (helmet) facial motion analysis through the Cara™ system. Asymmetry ratios and Procuste analysis will be performed at rest (during a 30-s period), during twelve maximal movement efforts and during spontaneous smile [