Objective: The aim of this study was to investigate the incidence of hypesthesia in patients with facial bone fractures and to identify the relationships between posttraumatic hypesthesia and risk factors, including general and fracture-related characteristics.
Study Design: A total of 437 patients who underwent surgery for facial bone fractures were included. Clinical neurosensory testing was performed at different time points (immediately after trauma and 1 week, 1 month, and 6 months after surgery). The results of these assessments were compared with regard to characteristics and fracture sites.
Results: The hypesthesia incidences were highest in the mandible (19.1%), maxilla (18.3%), and orbit (8.5%). Sensation was recovered by 97.3% of all patients by 6 months after surgery. Risk factors for hypesthesia were direct nerve injury (P = .002), distance (≤10 mm) between the fracture and nerve foramen (P = .002), the amount of bony displacement (P = .035), and age (P = .004). There were significant differences among the fracture sites.
Conclusions: Posttraumatic hypesthesia increased temporarily after surgery, but most patients recovered by 6 months postoperatively. Recovery from postoperative hypesthesia was related to the fracture site and pattern. Cases in which the patient did not recover involved direct nerve injury.
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