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Journal of Neurosurgical Sciences 2016 Dicembre;60(4):543-55

lingua: Inglese

Odontoid fractures in the octogenarian: a systematic review and meta-analysis

Hansen DENG 1, 2, John K. YUE 1, 2, Pavan S. UPADHYAYULA 1, 3, John F. BURKE 1, 2, Catherine G. SUEN 1, 2, Andrew K. CHAN 1, 2, Ethan A. WINKLER 1, 2, Sanjay S. DHALL 1, 2

1 Department of Neurological Surgery, University of California, San Francisco, CA, USA; 2 Brain and Spinal Injury Center, San Francisco General Hospital, San Francisco, CA, USA; 3 Department of Neurological Surgery, University of California, San Diego, La Jolla, CA, USA


INTRODUCTION: Odontoid fractures (OF) are the most frequent cervical spine fracture type in the elderly, often following low-velocity falls. The rise in life expectancies has led to an increase in octogenarians suffering OF, for which the optimal treatment remains undetermined.
EVIDENCE ACQUISITION: A comprehensive search was conducted (National Library of Medicine MEDLINE, Cochrane Central Register of Controlled Trials) for all articles through 03/2016. Articles were included if the study population evaluated treatment modalities in OF patients aged ≥80-years. Outcomes assessed were mortality, complications, osseous union, and fracture stability. Pooled odds ratios (OR) and 95% confidence intervals (CI) are reported.
EVIDENCE SYNTHESIS: Across 22 case series/retrospective studies, attributable mortality for surgery was 5.4% (8/149) vs. 10.1% (10/99) for nonsurgery (P=0.159). Surgery patients suffered higher complications rates (38.9%, 58/149; vs. 24.5%, 26/106); OR 1.96 ([1.13-3.40], P=0.016). Osseous union was better achieved with surgery (68.5%, 37/54; vs. 43.2%, 16/37); OR 2.86 ([1.20-6.80]; P=0.016). Fracture stability was better achieved with surgery (86.0%, 49/57; vs. 63.6%, 28/44); OR 3.50 ([1.33-9.21], P=0.009).
CONCLUSIONS: In general, octogenarians undergoing surgery for OF showed higher fusion and stability rates compared to nonsurgery, which may be due in part to surgical selection criteria, surgeon preference and patient comorbidities. Higher complications were observed for surgery patients, while no differences were observed for mortality. Prospective trials are greatly needed to identify the optional treatment modality and predictors of clinical outcome in octogenarians suffering OF.

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