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Craniovertebral junction pathology in high cervical disc disease
Chandan B Mohanty1, Dhaval P Shukla, B Indira Devi
1Department of Neurosurgery, National Institute of Mental Health and Neurosciences, Bangalore, India.
Insights
Craniovertebral junction (CVJ) pathology is a key factor in high cervical disc degeneration (HCDD). Patients with HCDD show poorer outcomes and more MRI signal changes compared to lower cervical disc issues.
Area of Science:
- Neurosurgery
- Orthopedics
- Radiology
Background:
- High cervical disc degeneration (HCDD) is a significant clinical concern.
- Understanding predisposing factors for HCDD is crucial for effective management.
- Craniovertebral junction (CVJ) pathology may play a role in HCDD development.
Purpose of the Study:
- To identify predisposing factors for HCDD.
- To investigate the association between CVJ pathology and HCDD.
- To compare clinical and radiological parameters of patients with C3-4 PIVD versus C5-6 PIVD.
Main Methods:
- Retrospective analysis of 37 patients with C3-4 prolapsed intervertebral disc (PIVD) and 45 patients with C5-6 PIVD.
- Clinical assessment using Nurick's grade.
- Radiological evaluation including CVJ assessment and stress X-rays.
Main Results:
- Patients with C3-4 PIVD were older and had a higher prevalence of CVJ pathology compared to C5-6 PIVD patients.
- C3-4 PIVD was associated with poorer pre-operative and post-operative Nurick's grades.
- A higher incidence of T2 hyperintense intramedullary signal changes was observed in C3-4 PIVD patients.
Conclusions:
- CVJ pathology is a significant predisposing factor for HCDD.
- HCDD is associated with poorer clinical outcomes and increased intramedullary signal changes on MRI.
- T2 hyperintense intramedullary signal changes correlate with worse clinical status and outcomes in HCDD.
Objective:
To establish predisposing factors of high cervical disc degeneration (HCDD) with an emphasis on the presence or absence of craniovertebral junction (CVJ) pathology by a retrospective analysis of clinical and radiologic parameters of patients operated at our institute.
Methods:
Thirty-seven patients of C3-4 prolapsed intervertebral disc (PIVD) were compared with 45 patients of C5-6 PIVD. Nurick's grade was used for clinical assessment. Radiological parameters like congenital and osteoarthritic changes at CVJ along with measurement of stress levels in flexion and extension on X-rays were done.
Results:
Mean age of C3-4 PIVD patients (48.16 years, range 26-65 years) was significantly higher than C5-6 PIVD patients (38.13 years, range 21-55 years) (p < 0.001). CVJ pathology was seen in significantly higher proportion in patients with C3-4 PIVD (18/37) in comparison to C5-6 PIVD (4/45) (p < 0.001). C3-4 PIVD patients presented with a poorer pre-op and post-op Nurick's grade. T2 hyperintense intramedullary signal change was seen in 91.8% (34/37) of C3-4 PIVD patients as compared to 66.67% (30/45) of C5-6 PIVD patients (p < 0.001).
Conclusion:
CVJ pathology is a predisposing factor for HCDD. HCDD presents in a poorer Nurick's grade compared to lower cervical PIVD and majority of the patients have T2 hyperintense intramedullary signal changes in MRI. Presence of T2 hyperintense intramedullary signal changes is associated with poorer pre-op clinical status and poorer post-op outcome.
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