Clefts of the secondary palate, either isolated or accompanying a cleft lip, are characterized by a defect in the palate of varying extent and by abnormal insertion of the levator veli palatini muscles. Repair of the palate should be carried out in one stage, shortly before or after 1 year of age, and should include intravelar veloplasty. The technique of von Langenbeck palatoplasty with intravelar veloplasty has been described. This technique should provide velopharyngeal competency in 80 to 90 per cent of patients with clefts of the secondary palate.
继发腭部裂隙，无论是孤立存在还是伴有唇裂，其特征是腭部存在不同程度的缺损以及腭帆提肌的异常附着。腭裂修复应在1岁左右之前或之后不久分一期进行，且应包括腭内肌成形术。已经描述了采用腭内肌成形术的冯·兰根贝克腭裂修复术。该技术应能使80%至90%的继发腭裂患者实现腭咽闭合功能。
