People treated by a solitary cross-face nerve graft or in combination with another procedure.

People treated with a solitary hypoglossal-facial anastomosis.

connecting the healthy facial nerve to the affected facial nerve

Symmetry of the mouth expressed as the difference in millimeters between the position of the affected and the healthy corner of the mouth on a picture. An ideal symmetry would be 0 mm. Measured with the FACE-gram software.

Excursion of the mouth expressed as the difference in millimeters between the position of the affected corner of the mouth in repose and with smile on a picture. Measured with the FACE-gram software.

A validated self-reported disease-specific quality-of-life questionnaire was used (Facial Clinimetric Evaluation scale). On which patients can score anything between 0 and 100 points (100 being healty).