Abstract
Nasal Septal Deviation (NSD) is a common sign in otorhinolaryngology that can lead to facial asymmetry. In this case-control observational study, we assessed the role of EMG and NCS in the diagnosis of NSD and its effect on neuromuscular function. Participants were divided into two groups based on paranasal sinus computed tomography scan (PNS CT) results: NSD cases (n = 21) and controls without NSD (n = 13). EMG and NCS were performed on both groups to assess nasal alar muscles at the root of the zygomatic nerve. Our findings showed a significant correlation between NSD and EMG/NCS tests (P-value = 000) and a significant association between septal deviation and nasal alar lateralization (P-value = 000). EMG/NCS can be useful in assessing NSD by providing a better understanding of related neuromuscular structures and neuromuscular function of the nasal alar dilator muscles and aid in the diagnosis of NSD. Nasal Septal Deviation, EMG (electromyography), NCS (nerve conduction studies), Neuromuscular function, Facial asymmetry, Otorhinolaryngology, Paranasal sinus, Computed tomography, Nasal alar muscles, Zygomatic nerve, Nasal Obstruction, Nasal alar lateralization, Diagnosis.