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Biofeedback rehabilitation for prevention of synkinesis after facial palsy
Nakamura K, Toda N, Sakamaki K, Kashima K, Takeda N
Otolaryngology -- Head and Neck Surgery 2003 Apr;128(4):539-543
clinical trial
3/10 [Eligibility criteria: No; Random allocation: Yes; Concealed allocation: No; Baseline comparability: No; Blind subjects: No; Blind therapists: No; Blind assessors: Yes; Adequate follow-up: No; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: No. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

OBJECTIVE: We developed a new training method of biofeedback rehabilitation for the prevention of synkinesis after facial palsy and evaluated the efficacy of the training. METHODS: Twenty-seven patients with complete facial palsy were divided randomly into 2 groups. Twelve of the patients were treated with the training method, and the other 15 patients served as controls. Patients were instructed to keep their eyes open symmetrically during mouth movements using a mirror. Thirty minutes of daily training was continued for a period of 10 months. The degree of synkinesis was evaluated by computing the percent asymmetry of eye opening width. RESULTS: The percent asymmetry of eye opening width was significantly greater in the training group than in the control group (p < 0.05). The results indicate that the degree of synkinesis is much less in the training group than in the control group. CONCLUSION: Our new training method is very effective for preventing the development of synkinesis after facial palsy.

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