There are many unresolved views on the efficacy of a wide range of therapeutic approaches in the treatment of Bell's palsy. The purpose of this paper was to review systematically randomised controlled trials, controlled trials and case studies relating to the efficacy of electrotherapy modalities in the management of acute and chronic Bell's palsy. The electrotherapy modalities reviewed included electrical stimulation, electromyography biofeedback, ultrasound, laser and short-wave diathermy. All the included studies were reviewed according to a self-devised checklist. Methodological considerations including the paucity of literature, and overall poor quality of trials impact the conclusions of this review. A clinical reasoning model and reflective practice, which consider the physiological effects of electrotherapeutic modalities according to the stages of healing of nerve injury, is offered. Guidance for electrotherapy intervention is suggested as well as possible areas for future research.

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A brief summary and a critical assessment of this review may be available at DARE