Alice Bonnefoy-Mazure1, Thibault Favre2, Guillaume Praplan2, Stéphane Armand3, Yoshimasa Sagawa Junior4, Didier Hannouche5, Katia Turcot6, Anne Lübbeke5, Hermes H Miozzari5. 1. Willy Taillard Laboratory of Kinesiology, Geneva University Hospitals and Geneva University, Switzerland; Division of Orthopaedics and Trauma Surgery, Geneva University Hospitals, Faculty of Medecine, Geneva, Switzerland. Electronic address: alice.bonnefoymazure@hcuge.ch. 2. Faculty of Medicine, Geneva University, Switzerland. 3. Willy Taillard Laboratory of Kinesiology, Geneva University Hospitals and Geneva University, Switzerland; Division of Orthopaedics and Trauma Surgery, Geneva University Hospitals, Faculty of Medecine, Geneva, Switzerland. 4. Laboratoire d'Exploration Fonctionnelle Clinique du Mouvement, CHRU de Besançon, France; Centre d'Investigation Clinique INSERM CIT 808, CHRU de Besançon, France. 5. Division of Orthopaedics and Trauma Surgery, Geneva University Hospitals, Faculty of Medecine, Geneva, Switzerland. 6. Faculty of Medicine, Department of Kinesiology, Laval University, Quebec, Canada; Centre for Interdisciplinary Research in Rehabilitation and Social Integration (CIRRIS), Quebec, Canada.
Abstract
BACKGROUND: The purpose of this prospective study was to understand the relation between gait outcomes and patient satisfaction one year after total knee arthroplasty (TKA). METHODS: Seventy-nine patients were evaluated before and one year after TKA using clinical gait analysis. Specific gait outcomes were analyzed: gait speed, stance phase, range of motion (ROM) knee flexion and maximal knee flexion. The parameters of interest selected for the statistical analysis were: gait speed and maximal knee flexion during gait. The Western Ontario and MacMaster Osteoarthritis Index (WOMAC) and patient satisfaction were also assessed. The satisfaction was evaluated using a questionnaire and was splited in five categories: very unsatisfied, unsatisfied, neutral, satisfied or very satisfied. To assess associations between patient satisfaction and maximal knee flexion during gait and gait speed, an unadjusted ordinal logistic regression analysis was used. The analysis was then adjusted for covariates: age and Body Mass Index (BMI) before surgery and WOMAC pain one year after surgery. RESULTS: All gait outcomes after TKA had significantly improved. The ordinal logistic regression analysis found significant associations between patient satisfaction and maximal knee flexion after TKA (unadjusted and adjusted) but not for gait speed. CONCLUSION: These findings show that all patients improved their gait outcomes one year after TKA but only a higher maximal knee flexion during gait may influence the level of patient satisfaction.
BACKGROUND: The purpose of this prospective study was to understand the relation between gait outcomes and patient satisfaction one year after total knee arthroplasty (TKA). METHODS: Seventy-nine patients were evaluated before and one year after TKA using clinical gait analysis. Specific gait outcomes were analyzed: gait speed, stance phase, range of motion (ROM) knee flexion and maximal knee flexion. The parameters of interest selected for the statistical analysis were: gait speed and maximal knee flexion during gait. The Western Ontario and MacMaster Osteoarthritis Index (WOMAC) and patient satisfaction were also assessed. The satisfaction was evaluated using a questionnaire and was splited in five categories: very unsatisfied, unsatisfied, neutral, satisfied or very satisfied. To assess associations between patient satisfaction and maximal knee flexion during gait and gait speed, an unadjusted ordinal logistic regression analysis was used. The analysis was then adjusted for covariates: age and Body Mass Index (BMI) before surgery and WOMAC pain one year after surgery. RESULTS: All gait outcomes after TKA had significantly improved. The ordinal logistic regression analysis found significant associations between patient satisfaction and maximal knee flexion after TKA (unadjusted and adjusted) but not for gait speed. CONCLUSION: These findings show that all patients improved their gait outcomes one year after TKA but only a higher maximal knee flexion during gait may influence the level of patient satisfaction.