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Published on: November 8, 2024
Risk factors of non-union in Anderson-D'Alonzo type III odontoid fractures with conservative treatment
Hiroyuki Koshimizu1,2, Hiroaki Nakashima1,2, Keigo Ito3,2
1Department of Orthopaedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan.
Objective:
The purpose of this study was retrospectively to analyze the risk factors for non-union in Anderson-D'Alonzo type III odontoid fractures with conservative treatment.
Methods:
25 patients with type III fractures were analyzed. Coronal and sagittal tilt as well as sagittal and lateral mass gaps were measured by using computed tomography.
Results:
The non-union group had significantly higher age, greater coronal tilt and lateral mass gap. Especially, the lateral mass gap was >2 mm in all cases with non-union.
Conclusions:
Higher age, coronal tilt, and lateral mass gap were significant risk factors for non-union.
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