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    Evaluation of cerebellum volume and trunk oscillation velocity in cases with adolescent idiopathic scoliosis: a preliminary report
    (Springer, 2023) Batin, Sabri; Payas, Ahmet; Bal, Emre; Ekinci, Yakup; Kurtoglu, Erdal; Ucar, Ilyas; Arik, Mustafa
    Purpose It has been suggested that the cause of the balance disorder seen in adolescent idiopathic scoliosis (AIS) originates from the central nervous system. However, the extent of the balance problem and the dysfunction of which part of the central nervous system has not been investigated in detail. This study aimed to correlate the values obtained by balance analysis and cerebellum volume measurement in female individuals with AIS with healthy individuals.Methods Cerebellum volume was calculated via the cloud-based software https://volbrain.upv.es using brain magnetic resonance images of 27 healthy and 26 individuals with AIS. The duration of stay in the test positions, the movement strategy used during this time and the amount of postural sway were analyzed by using a computer-assisted force platform and compared statistically.Results Significant differences were found between the AIS and control groups in cerebellum total volume, vermis cerebelli volume (cm3), and trunk oscillation velocity (mm/s) parameters (p < 0.05). Cerebellum and vermis cerebelli volumes were found to be lower and trunk oscillation velocity was found to be greater in patients with AIS.Conclusion Balance problems in patients with AIS are correlated with decreased cerebellum volume and increased trunk oscillation velocity.
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    The Role of Conscious and Unconscious Proprioceptive Sensation in Unstable Postural Balance: A Cross-Sectional Study
    (Erciyes Univ Sch Medicine, 2024) Payas, Ahmet; Kurtoglu, Erdal; Kepenek-Varol, Büşra; Batin, Sabri; Kararti, Caner; Koc, Ali; Ucar, Ilyas
    Objective: Proprioception is the capacity to perceive the position of any body part, either consciously or unconsciously. This sense, in conjunction with the visual and vestibular senses, helps maintain postural balance. This study explores the relationship between postural balance analysis outcomes and proprioceptive sense tractography data. Materials and Methods: Sixty-two healthy individuals were categorized into two groups based on postural balance analysis: the unstable posture group and the stable posture group. Postural sway test measurements, such as sway area, track length, velocity, Romberg quotient, lateral sway, and anteroposterior sway, were recorded for both groups on fixed and moving surfaces over 20 seconds. Using the DSI Studio program, tractography of the proprioceptive sensory pathways was conducted on participants using brain diffusion tensor images (DTI). IBM Statistical Package for the Social Sciences (SPSS) 23.0 software was employed for statistical analysis, with a p -value <0.05 considered statistically significant. Results: Tractography of the unstable posture group revealed increased mean diffusivity (MD) and radial diffusivity (RD) in the brain white matter, superior cerebellar peduncle, and middle cerebellar peduncle, while axial diffusivity (AD) values decreased (p<0.05). There was a notable correlation between the sway area in the unstable and eyes -open positions and the fiber count and fiber percentage in the right inferior cerebellar peduncle. Conclusion: The data suggest impairments in the pathways responsible for carrying unconscious proprioceptive sensations in individuals with unstable posture.