Blink reflex changes and sensory perception in infraorbital nerve-innervated areas following zygomaticomaxillary complex fractures
박영숙, 최재훈, 박상우,
소속 상세정보
박영숙 ( Park Young-Sook ) - Sungkyunkwan University School of Medicine Samsung Changwon Hospital Department of Physical Medicine and Rehabilitation
최재훈 ( Choi Jae-Hoon ) - Keimyung University School of Medicine Department of Plastic and Reconstructive Surgery
박상우 ( Park Sang-Woo ) - Sungkyunkwan University School of Medicine Samsung Changwon Hospital Department of Plastic and Reconstructive Surgery
Abstract
Background: Infraorbital nerve dysfunction is commonly reported after zygomaticomaxillary complex fractures. We evaluated sensory changes in four designated areas (eyelid, nose, zygoma, and lip) innervated by the infraorbital nerve. This evaluation was conducted using the static two-point discrimination test and the vibration threshold test. We assessed the diagnostic significance of the blink reflex in patients with infraorbital nerve dysfunction.
Methods: This study included 18 patients, all of whom complained of some degree of infraorbital nerve dysfunction preoperatively. A visual analog scale, the infraorbital blink reflex, static two-point discrimination, and the vibration threshold were assessed preoperatively, at 1 month postoperatively (T1), and at a final follow-up that took place at least 4 months postoperatively (T4). The results were analyzed using a multilevel generalized linear mixed model.
Results: Scores on the visual analog scale significantly improved at T1 and T4. The infraorbital blink reflex significantly improved at T4. Visual analog scale scores improved more rapidly than the infraorbital blink reflex. Two-point discrimination significantly improved in all areas at T4, and the vibration perception threshold significantly improved in the eyelid at T4.
Conclusions: Recovery of the infraorbital blink reflex reflected the recovery of infraorbital nerve dysfunction. We also determined that the lip tended to recover later than the other areas innervated by the infraorbital nerve.
키워드
Zygomatic fractures; Sensory threshold; Vibration; Blink reflexes
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