AI Article Synopsis
- The study investigates the relationship between atlantodental space tissue types in patients with atlantoaxial dislocation (AAD) and the potential for surgical reduction based on MRI findings.
- It involved analyzing preoperative MRI data from 135 AAD patients to classify tissue types and assess clinical characteristics, ensuring reliability through inter- and intra-observer agreement checks.
- Results showed that patients with stiffer tissue signs were typically older, had less motion in the atlanto-dental interval, and exhibited more severe clinical symptoms, highlighting the importance of MRI in understanding AAD.
Article Abstract
Objectives: The type of atlantodental space tissue in patients with atlantoaxial dislocation (AAD) can help doctors understand the possibility of reduction before surgery. However, relevant research on this topic is lacking. In this study, we aimed to summarise the atlantodental space classification of patients with AAD using magnetic resonance imaging (MRI) and explore their clinical characteristics.
Materials And Methods: Preoperative 3T cervical MR images of patients who underwent posterior reduction and fixation surgery for non-traumatic AAD between 1 September 2012 and 31 July 2023 were collected. Two radiologists read and recorded the MRI results based on the standard protocol. The kappa value was used to evaluate intra- and inter-observer agreements. The patient's age, sex, body mass index, clinical symptoms, Japanese Orthopaedic Association (JOA) score, and visual analogue scale information were obtained from medical records.
Results: A total of 135 patients with AAD (mean age, 51.3 ± 14.0 years, 52 men) were included in the analysis. The inter-observer agreement between the two readers was 0.818 (P < 0.0001). The intra-observer consistencies were 0.882 (P < 0.0001) and 0.896 (P < 0.0001). Patients with inflexible tissue signs exhibit more irreducible in hyperextension position, and their range of motion of ADI is smaller. These patients were older and had a higher incidence of abnormal spinal cord signals and JOA scores.
Conclusions: Novel MRI signs exhibited high inter- and intra-observer consistency and were associated with patient age, abnormal spinal cord signals, reducibility, range of motion of ADI, and symptoms.
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Article Synopsis
- The study investigates the relationship between atlantodental space tissue types in patients with atlantoaxial dislocation (AAD) and the potential for surgical reduction based on MRI findings.
- It involved analyzing preoperative MRI data from 135 AAD patients to classify tissue types and assess clinical characteristics, ensuring reliability through inter- and intra-observer agreement checks.
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