Posterior Positioning of Levator Veli Palatini with Intact Nasal Layer and Side-by-Side Bilateral Buccinator Flaps: Modified Approach for Palatal Lengthening.

Objective: To introduce a modified surgical method using bilateral buccinator flaps with posterior positioning of levator veli palatini muscles to treat velopharyngeal insufficiency.

Design: Cross-sectional clinical study.

Patients: Non-syndromic patients with velopharyngeal insufficiency.

Intervention: We performed a modified surgical method using posterior positioning of levator veli palatini muscles and side-by-side bilateral buccinator flaps.

Main Outcome Measures: Patients' characteristics, severity of hypernasality, palatal lengthening size, and operative complications were recorded and described. The severity of hypernasality was determined by a speech therapist before and after the operation.

Results: A total of 26 non-syndromic patients, with a median age of 8.5 years, were enrolled. All patients presented with severe hypernasality. Following the operation and during the follow-up period, 12 patients showed a complete resolution of hypernasality, while 9, 3, and 2 patients exhibited mild, moderate, and severe hypernasality, respectively. In addition, the mean palatal lengthening was measured to be 25.3 ± 3.5 mm. Overall, three patients experienced partial flap loss in one flap, which was successfully repaired with a secondary intention without the development of a fistula. In five cases, complete closure of the donor sites couldn't be achieved and thus were treated with secondary intention. Additionally, postoperative food restrictions were observed in seven cases but were resolved within one month. No other complications were noted in the remaining patients.

Conclusion: This modified palatal lengthening technique results in a significant lengthening of the palate while maintaining favorable speech outcomes. Future randomized clinical trials are warranted to validate our findings.