Restricted Mouth Opening in Head and Neck Cancer: Etiology, Prevention, and Treatment

摘要

Restricted mouth opening, usually referred to as trismus or jaw hypomobility, is often encountered in patients with head and neck (HN) cancer.1,2 The reported prevalence in the literature varies in different studies from < 10% to > 50% of patients. This wide range depends on tumor site, size, and oncologic treatment; it is also attributed to study design, assessment methods, and the diagnostic criteria used.