External orthosis as exclusive treatment for hangman's fracture type II. Case report
Keywords:
hangman's fracture, traumatic spondylolisthesis of the axis, conservative treatmentAbstract
Introduction: Fractures of the axis are the most common injuries to the upper cervical spine. Traumatic spondylolisthesis is a bilateral fracture of the pars interarticularis of C2. Its management is controversial.
Case report: A 58-years-old male patient was brought to the emergency department due to a height falling. During the initial evaluation, neurological deficit was not found, but the patient refered pain when moving his neck in a rotational direction. A Minerva rigid cervical orthosis was immediately placed on him and cervical x-rays was taken, which showed traumatic spondylolisthesis of the axis grade II. Initially was offered surgical treatment but the patient refused. In this case, a rigid cervical immobilization scheme was used for at least 16 weeks. During the follow-up period, serial x-rays showed fusion of C2-3. The patient was asymptomatic throughout this period, but with discomfort due to immobilization. The external orthosis was used until week 20th. Ten months after treatment the patient's functional performance was similar to that before the accident, with no signs of pseudoarthrosis.
Conclusions: Conservative management of this patient with traumatic spondylolisthesis of the axis type II with external orthosis had favorable results.
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