Methods: A randomized controlled trial with 94 patients of subcondylar fractures divided into two groups by osteosynthesis via endoscopic-assisted intraoral approach (group B) and submandibular approach (group A) at National Hospital of Odonto-Stomatology at Ho Chi Minh City, were followed up and evaluated in term of mandibular motion at 1, 2, 3 and 6 months postoperatively.