Reliability of the Harris Hip limping sub-score in patients undergoing total hip arthroplasty.
Kevin Rose-Dulcina, Xavier Gasparutto, Az-Eddine Djebara, Morgan Gauthier, Matthieu Zingg, Anne Lübbeke, Stéphane Armand, Didier Hannouche
Author Information
Kevin Rose-Dulcina: Kinesiology Laboratory, Geneva University Hospitals and University of Geneva, Geneva, Switzerland. kevin.rose-dulcina@hcuge.ch. ORCID
Xavier Gasparutto: Kinesiology Laboratory, Geneva University Hospitals and University of Geneva, Geneva, Switzerland.
Az-Eddine Djebara: Division of Orthopaedics and Trauma Surgery, Geneva University Hospitals and University of Geneva, Geneva, Switzerland.
Morgan Gauthier: Division of Orthopaedics and Trauma Surgery, Geneva University Hospitals and University of Geneva, Geneva, Switzerland.
Matthieu Zingg: Division of Orthopaedics and Trauma Surgery, Geneva University Hospitals and University of Geneva, Geneva, Switzerland.
Anne Lübbeke: Division of Orthopaedics and Trauma Surgery, Geneva University Hospitals and University of Geneva, Geneva, Switzerland.
Stéphane Armand: Kinesiology Laboratory, Geneva University Hospitals and University of Geneva, Geneva, Switzerland.
Didier Hannouche: Division of Orthopaedics and Trauma Surgery, Geneva University Hospitals and University of Geneva, Geneva, Switzerland.
PURPOSE: In patients undergoing total hip arthroplasty, limping is a significant symptom, often assessed with the limping sub-score of the Harris Hip Score. However, the reliability of this sub-score has not been specifically investigated. The purpose of this study is to investigate the intra- and inter-rater reliability of this sub-score. METHODS: Thirty patients undergoing THA were recruited and performed a gait analysis before surgery and three months after surgery. In addition, 30 asymptomatic participants were included. In total, 90 visits were analysed in this study. The HHS limping sub-score was assessed for each visit using a video (front and back view side-by-side) of a ten metre walk at a self-selected speed. Two orthopaedic surgeons evaluated the limping of each video in two different grading sessions with a one week delay. To avoid recall bias, the patient's number identity was randomized and different for each grading session and each rater. The weighted Cohen's Kappa coefficient was used to quantify the intra- and inter-reliability. The reliability of three components was studied: the presence of limping, its severity, and the compensation type. RESULTS: For all components, the agreement for intra-rater reliability ranged from moderate to strong and from none to moderate for the inter-rater reliability. CONCLUSION: These results do not encourage the use of HHS-limping sub-score for data involving different raters in both clinical and research contexts. It calls for improved consensus on limping definitions or the creation of objective measures.
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