TY - JOUR
T1 - Preoperative balance control compensation in patients with a vestibular schwannoma
T2 - Does tumor size matter?
AU - Ribeyre, Laurence
AU - Frère, Julien
AU - Gauchard, Gérome
AU - Lion, Alexis
AU - Perrin, Philippe
AU - Spitz, Elisabeth
AU - Parietti-Winkler, Cécile
N1 - Publisher Copyright:
© 2014 International Federation of Clinical Neurophysiology.
PY - 2015/4/1
Y1 - 2015/4/1
N2 - Objective: The influence of tumor size on postural control of patients with vestibular schwannoma (VS) remains to be determined. This study aimed to compare the postural performances of VS patients, according to the size of the tumor, with healthy subjects. Methods: The six conditions (C1-C6) of the sensory organization test (SOT) were carried out in 87 patients, split into four groups according to the Koos classification (stage I-IV), and in 72 aged-matched controls to evaluate postural control. The vestibular reflectivity and compensation were estimated with videonystagmography. Results: Among patients, lower C5 and C6 scores were found in stage I and IV patients than in stage II and III patients, whereas vestibular compensation did not impact the tumor size influence on the postural control. The scores were significantly (. p<. 0.001) lower for all the groups of patients than the controls in the vestibular-related SOT conditions (C5-C6). Conclusions: Patients with an unilateral VS displayed altered postural performances compared to the control subjects and tumor size had a bell-like pattern effect on balance control. Significance: The tumor size could be seen as a determining factor in the implementation of adaptive mechanisms that lead to the postural compensation and might be dissociated from vestibular compensation.
AB - Objective: The influence of tumor size on postural control of patients with vestibular schwannoma (VS) remains to be determined. This study aimed to compare the postural performances of VS patients, according to the size of the tumor, with healthy subjects. Methods: The six conditions (C1-C6) of the sensory organization test (SOT) were carried out in 87 patients, split into four groups according to the Koos classification (stage I-IV), and in 72 aged-matched controls to evaluate postural control. The vestibular reflectivity and compensation were estimated with videonystagmography. Results: Among patients, lower C5 and C6 scores were found in stage I and IV patients than in stage II and III patients, whereas vestibular compensation did not impact the tumor size influence on the postural control. The scores were significantly (. p<. 0.001) lower for all the groups of patients than the controls in the vestibular-related SOT conditions (C5-C6). Conclusions: Patients with an unilateral VS displayed altered postural performances compared to the control subjects and tumor size had a bell-like pattern effect on balance control. Significance: The tumor size could be seen as a determining factor in the implementation of adaptive mechanisms that lead to the postural compensation and might be dissociated from vestibular compensation.
KW - Computerized dynamic posturography
KW - Neuroplasticity
KW - Posture
KW - Vestibular schwannoma
UR - http://www.scopus.com/inward/record.url?scp=84924674613&partnerID=8YFLogxK
U2 - 10.1016/j.clinph.2014.07.022
DO - 10.1016/j.clinph.2014.07.022
M3 - Article
C2 - 25242564
AN - SCOPUS:84924674613
SN - 1388-2457
VL - 126
SP - 787
EP - 793
JO - Clinical Neurophysiology
JF - Clinical Neurophysiology
IS - 4
ER -