Dariusch Arbab1, Katharina Kuhlmann2, Christoph Schnurr3, Christian Lüring4, Dietmar König5, Bertil Bouillon6. 1. Department of Orthopedic Surgery, Klinikum Dortmund, Member Faculty of Health Witten/Herdecke University, Beurhausstraße 40, 44137 Dortmund, Germany. Electronic address: darbab@gmx.de. 2. Medical University Düsseldorf, Moorenstraße 5, 40225 Düsseldorf, Germany. Electronic address: Katharina-kuhlmann@web.de. 3. Department of Orthopedic Surgery, St. Vinzenz Krankenhaus, Schlossstraße 85, 40447 Düsseldorf, Germany. Electronic address: Christoph.Schnurr@vkkd-kliniken.de. 4. Department of Orthopedic Surgery, Klinikum Dortmund, Beurhausstraße 40, 44137 Dortmund, Germany. Electronic address: christian.luering@klinikumdo.de. 5. LVR Clinics of Orthopedic Surgery, Horionstraße 2, 41479 Viersen, Germany. Electronic address: DietmarPierre.Koenig@lvr.de. 6. Department of Traumatology and Orthopedic Surgery, Cologne-Merheim Medical Center (CMMC), University of Witten/Herdecke, Ostmerheimer Str. 200, 51109 Cologne, Germany. Electronic address: Bouillonb@kliniken-koeln.de.
Abstract
BACKGROUND: Patient-reported outcome measures are a critical tool in evaluating the efficacy of orthopedic procedures. The intention of this study was to compare the psychometric properties of the Manchester-Oxford Foot Questionnaire (MOXFQ) and the Self-Reported Foot and Ankle Outcome Score (SEFAS) in patients with foot or ankle surgery. METHODS: 177 patients completed both scores and FAOS, Foot and Ankle Outcome Score (FAOS), Short Form 36 (SF-36) and numeric scales for pain and disability (NRS) before and after surgery. Test-Retest reliability, internal consistency, floor and ceiling effects, construct validity, responsiveness and minimal important change were analyzed. RESULTS: The MOXFQ and SEFAS demonstrated excellent test-retest reliability with interclass correlation coefficient values >0.9 Cronbach's alpha (α) values demonstrated strong internal consistency. No floor or ceiling effects were observed for both questionnaires. As hypothesized MOXFQ subscales correlated strongly with corresponding SEFAS, FAOS and SF-36 domains. MOXFQ subscales showed excellent responsiveness between preoperative assessment and postoperative follow-up, whereas SEFAS demonstrated moderate responsiveness. CONCLUSIONS: The MOXFQ and SEFAS demonstrated good psychometric properties and proofed to be valid and reliable instruments for use in foot and ankle patients. MOXFQ showed better outcomes in responsiveness.
BACKGROUND:Patient-reported outcome measures are a critical tool in evaluating the efficacy of orthopedic procedures. The intention of this study was to compare the psychometric properties of the Manchester-Oxford Foot Questionnaire (MOXFQ) and the Self-Reported Foot and Ankle Outcome Score (SEFAS) in patients with foot or ankle surgery. METHODS: 177 patients completed both scores and FAOS, Foot and Ankle Outcome Score (FAOS), Short Form 36 (SF-36) and numeric scales for pain and disability (NRS) before and after surgery. Test-Retest reliability, internal consistency, floor and ceiling effects, construct validity, responsiveness and minimal important change were analyzed. RESULTS: The MOXFQ and SEFAS demonstrated excellent test-retest reliability with interclass correlation coefficient values >0.9 Cronbach's alpha (α) values demonstrated strong internal consistency. No floor or ceiling effects were observed for both questionnaires. As hypothesized MOXFQ subscales correlated strongly with corresponding SEFAS, FAOS and SF-36 domains. MOXFQ subscales showed excellent responsiveness between preoperative assessment and postoperative follow-up, whereas SEFAS demonstrated moderate responsiveness. CONCLUSIONS: The MOXFQ and SEFAS demonstrated good psychometric properties and proofed to be valid and reliable instruments for use in foot and ankle patients. MOXFQ showed better outcomes in responsiveness.