Outcomes of direct muscle neurotization in pediatric patients with facial paralysis. 2009

Julia K Terzis, and Dimitrios Karypidis
Norfolk, Va. From the Department of Surgery, Division of Plastic and Reconstructive Surgery, and the Microsurgery Program, Eastern Virginia Medical School.

BACKGROUND Multistage reconstructive procedures are often required to try to restore the emotional potential of human expression in cases of facial paralysis. In this study, the senior author's (J.K.T.) experience with the technique of direct nerve to muscle neurotization as a part of multistage facial reanimation procedures is presented. Age, denervation time, etiology of the lesion, previous reconstructive procedures, and types of muscles responsible for animation were analyzed to make evidence-based recommendations on the indications of the technique as well as its role and effectiveness in facial reanimation. METHODS Retrospective review of 37 pediatric patients who underwent direct muscle neurotization took place. The patients were divided into three groups, depending on the region that direct neurotization was aiming to augment. Group A involved 28 patients for eye closure and blink, group B included 15 patients for smile, and group C included 19 patients for depressor augmentation. RESULTS Twenty patients were female and 17 male. Patient age ranged from 1 to 16 years, with a mean age (+/-SD) of 9 +/- 2.8 years. Denervation time ranged from 3 months to 15.25 years, and the mean denervation time was 6.72 years. Electromyographic scoring of the neurotized muscles showed an overall mean improvement of 36 percent for eye closure, 34.25 percent for blink, 37 percent for smile augmentation, and 30 percent for depressor function restoration. CONCLUSIONS Direct muscle neurotization has a valid role in pediatric facial reanimation procedures, as it augments and promotes expressivity.

UI MeSH Term Description Entries
D007223 Infant A child between 1 and 23 months of age. Infants
D008297 Male Males
D001767 Blinking Brief closing of the eyelids by involuntary normal periodic closing, as a protective measure, or by voluntary action. Orbicularis Oculi Reflex,Reflex, Blink,Reflex, Corneal,Reflex, Orbicularis Oculi,Winking,Blink Reflexes,Corneal Reflexes,Orbicularis Oculi Reflexes,Blink Reflex,Reflexes, Blink,Reflexes, Orbicularis Oculi
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D002675 Child, Preschool A child between the ages of 2 and 5. Children, Preschool,Preschool Child,Preschool Children
D004576 Electromyography Recording of the changes in electric potential of muscle by means of surface or needle electrodes. Electromyogram,Surface Electromyography,Electromyograms,Electromyographies,Electromyographies, Surface,Electromyography, Surface,Surface Electromyographies
D005149 Facial Expression Observable changes of expression in the face in response to emotional stimuli. Face Expression,Expression, Face,Expression, Facial,Face Expressions,Facial Expressions
D005152 Facial Muscles Muscles of facial expression or mimetic muscles that include the numerous muscles supplied by the facial nerve that are attached to and move the skin of the face. (From Stedman, 25th ed) Mimetic Muscles,Facial Muscle,Mimetic Muscle,Muscle, Facial,Muscle, Mimetic,Muscles, Facial,Muscles, Mimetic
D005158 Facial Paralysis Severe or complete loss of facial muscle motor function. This condition may result from central or peripheral lesions. Damage to CNS motor pathways from the cerebral cortex to the facial nuclei in the pons leads to facial weakness that generally spares the forehead muscles. FACIAL NERVE DISEASES generally results in generalized hemifacial weakness. NEUROMUSCULAR JUNCTION DISEASES and MUSCULAR DISEASES may also cause facial paralysis or paresis. Facial Palsy,Hemifacial Paralysis,Facial Palsy, Lower Motor Neuron,Facial Palsy, Upper Motor Neuron,Facial Paralysis, Central,Facial Paralysis, Peripheral,Facial Paresis,Lower Motor Neuron Facial Palsy,Upper Motor Neuron Facial Palsy,Central Facial Paralyses,Central Facial Paralysis,Facial Palsies,Facial Paralyses, Central,Facial Paralyses, Peripheral,Palsies, Facial,Palsy, Facial,Paralyses, Central Facial,Paralyses, Facial,Paralyses, Hemifacial,Paralysis, Central Facial,Paralysis, Facial,Paralysis, Hemifacial,Paralysis, Peripheral Facial,Pareses, Facial,Paresis, Facial,Peripheral Facial Paralysis
D005260 Female Females

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