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@proceedings{1317746,
author = {Řezaninová, Jana and Hrazdira, Luboš and Svoboda, Zdeněk and Moc Králová, Dagmar},
booktitle = {10th International conference of Kinanthropology, Brno},
keywords = {Lateral ankle ligaments injury; postural stability},
language = {eng},
isbn = {978-80-210-8029-4},
title = {The influence of chronic ankle instability on postural stability},
year = {2015}
}
TY - CONF
ID - 1317746
AU - Řezaninová, Jana - Hrazdira, Luboš - Svoboda, Zdeněk - Moc Králová, Dagmar
PY - 2015
TI - The influence of chronic ankle instability on postural stability
SN - 9788021080294
KW - Lateral ankle ligaments injury
KW - postural stability
N2 - Twenty young athletes (mean (SD) 27,4 (6,1) with chronic ankle instability (CAI) were examined. Individuals with CAI have a history of ankle sprain (greater than 1 year prior) without mechanical laxity. Diagnosis was based on clinical musculoskeletal ultrasound examination - Anterior Talar Drawer Test and Talar Tilt Test. The patients were examined in held-forced positions under local anesthesia. Scans were taken in dorsal or ventrolateral cuts, we measured the distance between bone edges of the posterior edge of tibia and talus (the difference had to be more than 3 mm in comparison to the contralateral side). FootWork Pro Pressure Plate (49 by 64,5cm forceplate) measured COP and max pressure of each foot. Measures of centre of pressure excursion in frontal and sagittal planes (anterior-posterior excursion, medial-lateral excursion), 95 % confidence ellipse (AREA, covered 95 % of the points of the COP diagram) were calculated during 30-second trials of static double-leg stance and 3 x 10-second trials of static single-leg stance. We used Fisher post hoc procedure (ANOVA) for identify specific differences. We found not significant difference in postural stability in patients with chronic ankle instability (N = 20) in 30s double-leg stance test between injured and uninjured leg. Confidence ellipse of the center-of-pressure area (p = 0,029) and COP excursion in sagittal plane (p = 0,015) were in one-leg stance test in patients with chronic ankle instability significantly higher on injured leg than on uninjured leg. Alterations in postural stability could be caused by posttraumatic ankle ligamentous laxity or by deficit in the afferent input arising from articular deafferentation (failure of mechanoreceptors residing in the ankle ligaments and capsule). Instrumental postural stability testing on stable force plates is useful for identifying deficits that are associated with an increased risk of ankle sprain that occur in athletes with CAI.
ER -
ŘEZANINOVÁ, Jana, Luboš HRAZDIRA, Zdeněk SVOBODA a Dagmar MOC KRÁLOVÁ. The influence of chronic ankle instability on postural stability. In \textit{10th International conference of Kinanthropology, Brno}. 2015. ISBN~978-80-210-8029-4.
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