Electroneuromyographic study of orbicularis oculi muscle for evaluation of denervation after a transcutaneous inferior blepharoplasty with musculocutaneous flap

Abstract

Background

Despite of the advances in plastic surgery, the approach to inferior eyelid is still considered a potential area for complications. Inferior transcutaneous blepharoplasty, without a canthal support, can lead to malposition of the inferior eyelid in 15 to 20 % of the individuals. The purpose of the study was to evaluate orbicularis oculi muscle function through electroneuromyographic studies of the face and inferior eyelid after inferior transcutaneous blepharoplasty with musculocutaneous flap.

Methods

Fifteen individuals, 30 eyelids, were submitted to inferior blepharoplasty with musculocutaneous flap and lateral canthopexy. Electroneuromyography with standard needles and facial nerve conductive studies were performed before and after surgery on both sides of the face. Statistical analysis was used.

Results

All the operated eyelids showed electroneuromyographic activity during voluntary contraction of orbicularis oculi muscle. Blink reflexes and facial nerve studies revealed no signs of denervation in both sides (p > 0.01). Functional and aesthetical results were considered satisfactory.

Conclusions

Electroneuromyographic studies after inferior transcutaneous blepharoplasty showed a viable muscle, functional and electrically active to inferior eyelid. Denervation was not evidenced.

Level of Evidence: Level IV, prognostic study.

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