Hip-Knee-Ankle (HKA) angle modification during gait in healthy subjects [r-libre/1689]

Clément, Julien; Blakeney, William; Hagemeister, Nicola; Desmeules, François; Mezghani, Neila; Lowry, Véronique et Vendittoli, Pascal-André (2019). Hip-Knee-Ankle (HKA) angle modification during gait in healthy subjects. Gait and Posture, 72, 62-68. https://doi.org/10.1016/j.gaitpost.2019.05.025

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Catégorie de document :	Articles de revues
Évaluation par un comité de lecture :	Oui
Étape de publication :	Publié
Résumé :	Background Achieving a neutral static Hip-Knee-Ankle angle (sHKA) measured on radiographs has been considered a factor of success for total knee arthroplasty (TKA). However, recent studies have shown that sHKA seems to have no effect on TKA survivorship. sHKA is not representative of the dynamic loading occurring during gait, unlike the dynamic HKA (dHKA). Research question The primary objective was to see if the sHKA is predictive of the dynamic HKA (dHKA). A secondary objective was to document to what degree the dHKA changes during gait. Methods We analysed 3D knee kinematics during gait of a cohort of 90 healthy individuals with the KneeKG™ system. dHKA was calculated and compared with sHKA. Knees were considered “Stable” if the dHKA remained in valgus or varus for greater than 95% of the corresponding phase, and “Changer” otherwise. Patient characteristics of the Stable and Changer knees were compared to find associated factors. Results Absolute variation of dHKA during gait was 10.9 ± 5.3° for the whole cohort. The variation was less for the varus knees (10.3 ± 4.8°), than for the valgus knees (12.8 ± 6.1°, p = 0.008). We found low to moderate correlations (r = 0.266 to 0.553, p < 0.001) between sHKA and dHKA values for varus knees and no significant correlation for valgus knees. Twenty two percent (36/165) of the knees were considered Changers. The proportion of knees that were Changers was 15% of the varus versus 39% of the valgus (p < 0.001). Significance Lower limb radiographic measures of coronal alignment have limited value for predicting dynamic measures of alignment during gait. Keywords Healthy subjects, 3D knee kinematics, Dynamic hip-knee-angle, KneeKG™ system
Adresse de la version officielle :	https://www.sciencedirect.com/science/article/abs/...
Déposant:	Mezghani, Neila
Responsable :	Neila Mezghani
Dépôt :	31 mai 2019 12:40
Dernière modification :	31 mai 2019 12:40

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