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Background: The Facial Grading Scale (FGS) is a quantitative instrument used to evaluate facial function after facial nerve injury. However, quantitative improvements in function after facial rehabilitation in people with chronic facial paralysis have not been shown.

Objective: The objectives of this study were to use the FGS in a large series of consecutive subjects with facial paralysis to quantitatively evaluate improvements in facial function after facial nerve rehabilitation and to describe the management of chronic facial paralysis.

Design: The study was a retrospective review.

Methods: A total of 303 individuals with facial paralysis were evaluated by 1 physical therapist at a tertiary care facial nerve center during a 5-year period. Facial rehabilitation included education, neuromuscular training, massage, meditation-relaxation, and an individualized home program. After 2 months of home exercises, the participants were re-evaluated, and the home program was tailored as necessary. All participants were evaluated with the FGS before the initiation of facial rehabilitation, and 160 participants were re-evaluated after receiving treatment. All participants underwent the initial evaluation at least 4 months after the onset of facial paralysis; for 49 participants, the evaluation took place more than 3 years after onset.

Results: Statistically significant increases in FGS scores were seen after treatment (P<.001, t test). The average initial score was 56 (SD=21, range=13–98), and the average score after treatment was 70 (SD=18, range=25–100).

Limitations: A limitation of this study was that evaluations were performed by only 1 therapist.

Conclusions: For 160 patients with facial paralysis, statistically significant improvements after facial rehabilitation were shown; the improvements appeared to be long lasting with continued treatment. The improvements in the FGS scores indicated that patients can successfully manage symptoms with rehabilitation and underscored the importance of specialized therapy in the management of facial paralysis.