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Year : 2016  |  Volume : 64  |  Issue : 4  |  Page : 633--639

Correlation between qualitative balance indices, dynamic posturography and structural brain imaging in patients with progressive supranuclear palsy and its subtypes

1 Department of Neurology, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
2 Department of Neurological Rehabilitation, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India
3 Department of Neuroimaging and Interventional Radiology, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India

Correspondence Address:
Dr. Pramod Kumar Pal
Department of Neurology, National Institute of Mental Health and Neurosciences, Hosur Road, Bengaluru - 560 029, Karnataka
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0028-3886.185417

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Objectives: To compare the clinical, balance, and radiological profile of progressive supranuclear palsy (PSP) of Richardson type (PSP-R) and Parkinsonian type (PSP-P). Materials and Methods: Twenty-nine patients with PSP (PSP-R: 17, PSP-P: 12) satisfying the probable/possible National Institute of Neurological Disorders and Stroke-PSP criteria were recruited and assessed with Unified Parkinson's Disease Rating Scale-III, PSP rating scale (PSPRS), Berg balance scale (BBS), Tinetti performance-oriented mobility assessment gait and total (TPG and TPT) score, dynamic posturography (DP), and magnetic resonance imaging. Data were compared with 30 age- and gender-matched healthy controls. Results: The mean ages of PSP-R, PSP-P, and controls were comparable (62.5 ± 6.6, 59 ± 8.9, and 59.8 ± 7.6 years). The PSP group had significantly poor DP scores and more radiological abnormalities than controls. The PSPRS, TPG, and TPT scores were significantly more impaired in PSP-R compared to PSP-P (P = 0.045, P = 0.031, and P = 0.037, respectively). In DP, the limits of overall stability were most significant (P < 0.001) and PSP-R had lower scores. PSP-R compared to PSP-P had more often “Humming Bird” sign (P < 0.001), “Morning Glory” sign (P < 0.008), and generalized cortical atrophy (P < 0.001). The area of midbrain (P < 0.002) and midbrain/pons ratio (P < 0.013) was significantly lower in PSP-R. In PSP-P, the overall balance index significantly correlated with BBS, TPG, and TPT (r = −0.79, P = 0.002; r = −0.772, P = 0.003; and r = −0.688, P = 0.013) and the midbrain axial anterior–posterior diameter significantly correlated with the TPG and TPT (r = 0.74, P = 0.01; r = 0.66, P = 0.018). Conclusions: While balance and radiological abnormalities were more severe in PSP-R, the qualitative and quantitative measurements of severity of balance in PSP-P rather than PSP-R was a better reflection of the pathology of the midbrain.


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Online since 20th March '04
Published by Wolters Kluwer - Medknow