AI Article Synopsis
- The study aimed to assess spinopelvic parameters and spinal deformities in patients with idiopathic normal pressure hydrocephalus (iNPH) who underwent shunting.
- Seventeen patients were analyzed, showing a notable prevalence of sagittal plane deformities, with many exhibiting significant pelvic and lumbar discrepancies.
- The findings suggest that negative spinal alignment is common in these patients, potentially causing postural instability, and indicate a need for further evaluation and future studies to monitor changes post-surgery.
Article Abstract
Aim: To measure the baseline spinopelvic parameters and characterize the sagittal, and coronal plane deformities in patients with idiopathic normal pressure hydrocephalus (iNPH).
Material And Methods: We analyzed a series of patients at one academic institution who underwent ventriculoperitoneal shunting for iNPH with pre-shunt standing full length x-rays. The series of patients was enrolled consecutively to minimize selection bias. We quantified comorbid sagittal plane spinal deformity based on the Scoliosis Research Society-Schwab classification system by assessing pelvic incidence and lumbar lordosis mismatch (PI-LL), pelvic tilt (PT), and sagittal vertical axis (SVA).
Results: Seventeen patients (59% male) were included in this study. Mean (± standard deviation) age was 74 ± 5.3 years with a body mass index (BMI) of 30 ± 4.5 kg/m < sup > 2< sup > . Six patients (35%) had marked sagittal plane spinal deformity by at least one parameter: five (29%) had greater than 20˚ PI-LL mismatch, three (18%) had > 9.5 cm SVA, and one (6%) had PT greater than 30˚. Additionally, the thoracic kyphosis exceeded the lumbar lordosis in nine patients (53%).
Conclusion: Positive sagittal balance, with thoracic kyphosis exceeding lumbar lordosis, is common in iNPH patients. This may lead to postural instability, especially in patients whose gait does not improve following shunting. These patients may warrant further investigation and workup, including full length standing x-rays. Future studies should assess for improvement in the sagittal plane parameters following shunt placement.
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| http://dx.doi.org/10.5137/1019-5149.JTN.36555-22.3 | DOI Listing |
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