Five cases of fracture of the mandibular coronoid process

Fracture of the mandibular coronoid process is rare and account for only 1% of all mandibular fractures. The aim of this study was to assess the characteristics of patients with coronoid process fractures. Five cases of fractures of the mandible coronoid process were retrospectively studied from among 193 maxillofacial fractures occurring from 2009 to 2014. Five patients (3 males, 2 females) with 5 coronoid process fractures were admitted. The median age was 59 years. The fractures were mainly the result of stumbles. All patients had concomitant zygomatic fractures. Two patients with trismus were treated by concurrent open reduction and internal fixation of the coronoid processes and zygomatic fractures. The coronoid process was treated conservatively in 3 patients without trismus. Follow-up results showed significant improvement in mouth opening and pain in all patients.