Abstract
Varus hindfoot deformity may increase the risk of chronic lateral ankle instability (CLAI). We retrospectively analyzed hindfoot alignment (HFA) using weight bearing CT (WBCT) by measuring the foot ankle offset (FAO) using dedicated semiautomatic software (TALAS, Curvebeam, Hattfield, PA, USA) in 370 consecutive feet. Multivariable logistic regression adjusted for sex and age demonstrated a 35% increased odds ratio of CLAI per 1% reduction in FAO value (varus) and no significant effect of sex or age after adjustment for FAO.
Systematic recording of FAO measurements from WBCT images along with clinical history proved successful at quantifying the risk of CLAI.
Based on Lintz F, Bernasconi A, Baschet L, Fernando C, Mehdi N; Weight Bearing CT International Study Group, de Cesar Netto C. Relationship between chronic lateral ankle instability and hindfoot varus using weight-bearing cone beam computed tomography. Foot Ankle Int. 2019:1071100719858309. doi: 10.1177/1071100719858309. [Epub ahead of print].
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Lintz, F. (2020). Relationship Between Chronic Lateral Ankle Instability and Hindfoot Varus Using Weight Bearing Cone Beam Computed Tomography: A Retrospective Study. In: Weight Bearing Cone Beam Computed Tomography (WBCT) in the Foot and Ankle. Springer, Cham. https://doi.org/10.1007/978-3-030-31949-6_8
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