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Neurological impairment score in lumbar spinal stenosis
B Micankova Adamova1, S Vohanka, M Hnojcikova
1Department of Neurology, University Hospital and Masaryk University Brno, Jihlavska 20, 62500 Brno, Czech Republic. badamova@fnbrno.cz
A new scoring system, the neurological impairment score in lumbar spinal stenosis (NIS-LSS), effectively measures lower limb neurological deficits in lumbar spinal stenosis (LSS) patients. This validated tool distinguishes LSS patients from healthy individuals and correlates with disability levels.
Area of Science:
- Neurology
- Orthopedics
- Rehabilitation Medicine
Background:
- Lumbar spinal stenosis (LSS) significantly impacts patients' quality of life.
- The Oswestry Disability Index (ODI) measures LSS disability but lacks a neurological impairment assessment.
- A validated tool is needed to quantify neurological deficits in LSS patients.
Purpose of the Study:
- To develop and validate the neurological impairment score in lumbar spinal stenosis (NIS-LSS) for assessing lower limb neurological impairment in LSS patients.
- To evaluate the NIS-LSS's ability to discriminate between LSS patients and healthy controls.
- To assess the correlation between the NIS-LSS and the ODI for construct validity.
Main Methods:
- The NIS-LSS was developed based on tendon reflexes, sensation, paresis, and ambulation.
- 117 LSS patients and 63 healthy controls were assessed using the NIS-LSS.
- Correlation analysis was performed between NIS-LSS and ODI scores.
Main Results:
- The NIS-LSS demonstrated significant discrimination between LSS patients (median score 27) and controls (median score 33).
- An optimal NIS-LSS cut-off of 32 yielded 85.5% sensitivity and 81.3% specificity (p < 0.001).
- NIS-LSS scores significantly correlated with ODI scores (p < 0.001), with ambulation, sensation, and paresis showing strongest correlations.
Conclusions:
- The NIS-LSS is a simple, valid tool for assessing lower limb neurological impairment in LSS patients.
- It effectively differentiates LSS patients from healthy individuals with high sensitivity and specificity.
- The NIS-LSS aids in quantifying neurological status and monitoring disease progression or treatment effects.
