THE EFFECT OF SPHINCTER PHARYNGOPLASTY ON THE RANGE OF VELAR MOVEMENT

The aim of this study was to assess the mobility of the soft palate fo llowing sphincter pharyngoplasty in patients with velopharyngeal incom petence of variable aetiology. Pre- and postoperative videotape record ings of lateral view videofluoroscopy of 24 patients were retrospectiv ely studied and compared with regard to the range of velar movement. T racings of the velopharyngeal port were made on acetate paper directly from the television monitor and absolute angle measurements were take n. Analysis of the results showed a highly significant increase in the range of palatal movement postoperatively. There was no evidence of c orrelation between the magnitude of the increase and the postoperative improvement in speech. The findings and their implications are discus sed.