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Updated: Dec 25, 2025
Diffusion Tensor Magnetic Resonance Imaging in Chronic Spinal Cord Compression
Published on: May 7, 2019
MRI findings in Pott's spine and correlating clinical progress with radiological findings
Usha Kant Misra1, Siddharth Warrier2, Jayantee Kalita2
1Department of Neurology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Raebareli Road, Lucknow, Uttar Pradesh, 226014, India. drukmisra@rediffmail.com.
Purpose:
To document magnetic resonance imaging (MRI) changes in Pott's spine and to correlate these with clinical findings and outcome.
Methods:
Patients with Pott's spine having more than one set of MRI were included in the study. Patients were grouped according to timing of their second MRI. The MRI findings included changes in bone, disc, spinal cord, and soft tissue. The MRI changes were categorized into improvement, no change, or worsening. "Paradoxical worsening" was defined as radiological worsening in setting of clinical improvement, as described by improvement of Nurick's grade. Outcome was defined by mRS scale at three, six, and 12 months. The MRI findings and outcome were correlated.
Results:
The results are based on 36 patients. The MRI changes included vertebral changes in form of spondylodiscitis in 33 (92%), epidural abscess in 29 (81%), spinal cord changes including edema and granuloma in 17 (47%), paravertebral abscess in 29 (81%), and vertebral body collapse in 12 (33.3%) patients. At three months, clinical improvement occurred in eight out of 12 patients, deterioration in two, and no change in two. Spinal MRI revealed improvement in one patient only; whereas eight had deterioration and three had no change. At six months, all nine patients improved clinically, but MRI showed improvement in only four, while another four showed deterioration and one had no change. In the nine and 12 months group, while all patients clinically improved, MRI showed minimal worsening.
Conclusion:
In Pott's spine, the clinical improvement precedes the radiological improvement.
Insights
Clinical improvement in Pott's spine often appears before changes on magnetic resonance imaging (MRI). This study correlates MRI findings with patient outcomes, showing a disconnect in timing for spinal tuberculosis (Pott's spine).
Area of Science:
- Radiology
- Orthopedics
- Infectious Diseases
Background:
- Pott's spine, or spinal tuberculosis, presents diagnostic challenges.
- Magnetic resonance imaging (MRI) is crucial for assessing disease extent and treatment response.
- Correlation between radiological findings and clinical outcomes in Pott's spine requires further elucidation.
Purpose of the Study:
- To document serial magnetic resonance imaging (MRI) changes in patients with Pott's spine.
- To correlate observed MRI changes with clinical findings and patient outcomes.
- To investigate the temporal relationship between radiological and clinical improvement.
Main Methods:
- Retrospective analysis of 36 patients with Pott's spine undergoing serial MRI.
- Categorization of MRI findings (bone, disc, spinal cord, soft tissue) into improvement, no change, or worsening.
- Clinical assessment using Nurick's grade and modified Rankin Scale (mRS) at 3, 6, and 12 months.
Main Results:
- Common MRI findings included spondylodiscitis (92%), epidural abscess (81%), and paravertebral abscess (81%).
- Clinical improvement was observed earlier than radiological improvement in most patients.
- A 'paradoxical worsening' on MRI was noted in some patients despite clinical improvement.
Conclusions:
- Clinical recovery in Pott's spine typically precedes demonstrable radiological healing on MRI.
- Serial MRI monitoring should be interpreted alongside clinical status due to potential discrepancies.
- Understanding this temporal dissociation aids in managing patient expectations and treatment adjustments.
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