Obstructive sleep apnea (OSA) is a common form of sleep-disordered breathing. OSA usually results from the combination of a narrowed upper airway and loss of muscle tone during sleep, which leads to partial or com­plete cessation of airow. The upper airway includes the nasal cavity, nasopharynx, oropharynx, hypopharynx, and suparglottis, . Fig. 17.1. The oropharynx (ret­ropalatal area) is considered the most common site of obstruction in patients with OSA [1]. Continuous posi­tive airway pressure (CPAP) increases the intraluminal pressure to maintain the patency of the upper airway and overcome the tendency of airway collapse in indi­viduals with OSA. Current clinical practice guidelines recommend positive airway pressure therapy for treat­ment of OSA in adult patients with impaired sleep­related quality of life, excessive daytime sleepiness, or other associated comorbidities [2]. Although PAP is the primary treatment, many patients experience tolerating PAP limiting the maximum benets from therapy [2, 3]. Because of this, patients may seek alternative treatment modalities including surgical interventions to address their upper airway obstruction.