Speech Outcomes and Rates of Secondary Speech Surgery from Childhood to Skeletal Maturity following Modified Furlow Palatoplasty.

Background: This study updates the authors' institutional experience with modified Furlow palatoplasty, evaluating speech outcomes and incidence of secondary speech surgery throughout development and at skeletal maturity.

Methods: Nonsyndromic patients undergoing primary modified Furlow palatoplasty between 1985 and 2005 with postoperative speech evaluations were reviewed retrospectively. Secondary speech surgery and Pittsburgh Weighted Speech Scale (PWSS) scores before secondary speech or orthognathic operations were assessed in the groups aged 5 to 7 years, 8 to 11 years, 12 to 14 years, and older than 15 years and analyzed by Veau cleft type.

Results: A total of 551 patients with 895 total speech assessments were analyzed. Of 364 patients followed up to age 15 years or older, 19.8% underwent secondary speech surgery. Speech assessment of patients aged 15 years or older without prior secondary speech surgery showed competent velopharyngeal mechanisms in 77% of patients. PWSS nasal emission scores were worse in the 5- to 7-year age range ( P = 0.02), whereas resonance scores remained stable throughout development ( P = 0.2). Patients with Veau type I or II clefts had worse overall PWSS classifications in the groups aged 5 to 7 years and 8 to 11 years ( P = 0.01 and P = 0.03), with greater odds of secondary speech surgery relative to those with Veau type III (OR, 2.9; P < 0.001) or IV clefts (OR, 3.6; P = 0.001).

Conclusions: Most patients undergoing primary modified Furlow palatoplasty do not require secondary speech surgery and achieve socially acceptable speech at skeletal maturity. However, Veau type I and II clefts are associated with increased risk for early velopharyngeal dysfunction and secondary speech surgery. The incidence of secondary speech surgery was 19.8%, an increase from our previously reported rate of 8%.

Clinical question/level of evidence: Therapeutic, III.