Rigid cervical collar treatment for geriatric type II odontoid fractures

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Abstract
Purpose To evaluate fracture healing, functional outcomes, complications, and mortality associated with rigid cervical collars. Methods Thirty-four patients with <50% odontoid displacement were treated with a rigid cervical collar for 12 weeks (Average age = 84 years). Outcome scores were compared with a group of 40 age-matched control subjects (Average age 79.3). Results At average 14.9-month follow-up, only 6% demonstrated radiographic evidence of fracture healing and 70% had mobile odontoid nonunion. NDI scores indicated only mild disability, pain scores were low, and neither differed significantly from age-matched controls. Mobile odontoid nonunion was not associated with higher levels of disability or neck pain. Mortality rate was 11.8%. Treatment complications occurred in 6% of patients. Conclusions Odontoid nonunion and instability are high in geriatric patients treated with a rigid cervical collar. Fracture healing and stability did not correlate with improved outcomes. Outcomes did not differ significantly from age-matched cohorts.

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