Velopharyngeal insufficiency is incomplete closure of a sphincter between the oropharynx and nasopharynx, often resulting from anatomic abnormalities of the palate and causing hypernasal speech. Diagnosis is direct inspection with a fiberoptic nasoendoscope. Treatment is with speech therapy and surgery.
Velopharyngeal insufficiency is a form of velopharyngeal dysfunction that refers to an inability to adequately close the velopharyngeal port due to structural deficits. Closure of the velopharyngeal sphincter is normally achieved by the sphincteric action of the soft palate and the superior constrictor muscle. Closure is impaired in patients with anatomic defects such as cleft palate, repaired cleft palate, congenitally short palate, submucous cleft palate, palatal paralysis, and, sometimes, enlarged tonsils. Velopharyngeal insufficiency may also result when adenoidectomy or uvulopalatopharyngoplasty is performed in a patient with a congenital underdevelopment (submucous cleft) or paralysis of the palate.
Other forms of velopharyngeal dysfunction include velopharyngeal incompetence (inadequate closure due to neuromuscular issues) and velopharyngeal mislearning (inadequate closure due to maladaptive speech habits) (1).
General reference
1. MacIsaac MF, Wright JM, Vieux J, et al. Demystifying Velopharyngeal Dysfunction for Plastic Surgery Trainees-Part 1: Anatomy and Physiology. J Craniofac Surg. 2025;36(3):786-793. doi:10.1097/SCS.0000000000010605
Symptoms and Signs of Velopharyngeal Insufficiency
Speech in a patient with velopharyngeal insufficiency is characterized by hypernasal resonant voice, nasal emission of air during speech, nasal turbulence, and inability to produce sounds requiring high oral pressure (plosive consonants such as p, b, t, d, k, g). Facial grimacing or nostril distortion may occur, often as compensatory behavior during speech. Severe velopharyngeal insufficiency results in regurgitation of solid foods and fluids through the nose. Inspection of the palate during phonation may detect palatal paralysis.
Palpation of the midline of the soft palate may detect an occult submucous cleft, usually in patients with bifid uvula.
Diagnosis of Velopharyngeal Insufficiency
Direct inspection with a fiberoptic nasoendoscope
Velopharyngeal insufficiency is suspected in patients with the typical speech abnormalities. Direct inspection with a fiberoptic nasoendoscope is the primary confirmatory diagnostic technique.
Multiview videofluoroscopy during connected speech and swallowing (modified barium swallow) should be performed in collaboration with a speech pathologist.
Treatment of Velopharyngeal Insufficiency
Speech therapy and surgical repair
The treatment of velopharyngeal insufficiency consists of speech therapy and surgery (1). Speech therapy is the mainstay treatment for velopharyngeal mislearning and compensatory articulation, however, due to the presence of structural deficits, it cannot improve hypernasality, nasal emissions, or weak plosives in speech.
Surgical correction is considered definitive and is achieved by a palatal lengthening procedures (eg, elongation pushback procedure), posterior pharyngeal wall implant, pharyngeal flap, or pharyngoplasty, depending on the mobility of the lateral pharyngeal walls, the degree of velar elevation, and the size of the defect. A palatal lift prosthesis (from a prosthodontist) may also be helpful.
Treatment reference
1. Pitkanen VV, Geneid A, Saarikko AM, et al. Diagnosing and Managing Velopharyngeal Insufficiency in Patients With Cleft Palate After Primary Palatoplasty. J Craniofac Surg. 2025;36(3):1008-1016. doi:10.1097/SCS.0000000000009822
