Overview
Odontoid process fractures, primarily involving the odontoid peg of C2, are common in elderly patients and can lead to significant instability and neurological complications if not properly managed. 34Diagnosis
Imaging: Cone beam computed tomography (CBCT) is recommended for detailed assessment of odontoid process dimensions 1.
Morphometric Evaluation: Antero-posterior (AP) and transverse diameters assessed via CBCT help determine screw fixation suitability 1.
Classification: Type II fractures (fibrous union) may not show dynamic instability on imaging but require careful monitoring 2.Management
Operative Treatment: Single 4.5-mm Herbert screw fixation suggested for odontoid fractures in populations with smaller diameters (e.g., Arab population) 1.
Non-Operative Management: Acceptable for fibrous nonunion in geriatric patients, with close follow-up for neurological sequelae and pain management 2.
Biomechanical Considerations: Treatment decisions should consider bone mineral density (BMD) and biomechanical loads, though specific drug interventions are not detailed 3.Special Populations
Elderly: Operative versus non-operative treatment varies by age cohort, with cost-effectiveness analyses suggesting potential benefits of surgery in reducing non-union rates 4.
Comorbidities: No specific guidance provided in abstracts regarding comorbidities; individualized risk assessment is crucial 4.Key Recommendations
Utilize CBCT for assessing odontoid process dimensions to guide fixation strategy, particularly in populations with smaller diameters (Evidence: Moderate 1).
Non-operative management can be considered safe for fibrous nonunion in geriatric patients, provided close monitoring for neurological outcomes and pain control (Evidence: Moderate 2).
In elderly patients, evaluate cost-effectiveness and potential benefits of operative versus non-operative treatment based on age-specific risks and outcomes (Evidence: Moderate 4).References
1 Uthman A, Salman B, Shams Aldeen H, Marei H, Al-Bayati SF, Al-Rawi NH. Morphometric analysis of odontoid process among Arab population: a retrospective cone beam CT study. PeerJ 2023. link
2 Florman JE, Gerstl JVE, Kilgallon JL, Riesenburger RI. Fibrous Nonunion of Odontoid Fractures: Is It Safe To Accept Nonoperative Management? A Systematic Review. World neurosurgery 2022. link
3 Benca E, Zderic I, van Knegsel KP, Caspar J, Hirtler L, Fuchssteiner C et al.. Biomechanical Assessment of Fracture Loads and Patterns of the Odontoid Process. Spine 2022. link
4 Barlow DR, Higgins BT, Ozanne EM, Tosteson AN, Pearson AM. Cost Effectiveness of Operative Versus Non-Operative Treatment of Geriatric Type-II Odontoid Fracture. Spine 2016. link