Browsing by Author "Vial Irarrázabal, Raimundo"

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    Chilean Cross-Cultural Adaptation and Validation of the Hip Disability and Osteoarthritis Outcome Score
    (2025) Carmona Castillo, Maximiliano; Vidal Olate, Catalina Victoria; Irarrázaval Domínguez, Sebastián; Vial Irarrázabal, Raimundo; Besa Vial, Pablo Jose; Lira Salas, María Jesús; Mery I., Pamela; Guillemin, Francis
    Background The Hip disability and Osteoarthritis Outcome Score (HOOS) has been used for the evaluation of patients who have hip osteoarthritis. It is one of the most frequently used instruments for the follow-up of patients operated on for total hip arthroplasty (THA) in different national registries. The purpose of this study was to carry out the transcultural adaptation and validation of the Chilean version of the HOOS questionnaire in patients who have hip osteoarthritis. Methods The translation and cross-cultural adaptation process were based on international guidelines to obtain a Chilean version of the HOOS questionnaire. The Chilean version was evaluated in the pretest phase and then in the validation phase with patients in the outpatient setting, from patients who had initial osteoarthritis to patients who had end-stage disease waiting for surgery. We assessed the psychometric properties as convergent validity, evaluating correlations with the Short Form 12 Health Survey (SF12) questionnaire and the World Health Organization Disability Assessment Schedule 2.0 (WHODAS2.0) tool; structural validity by conducting a confirmatory factor analysis; and internal consistency using Cronbach’s alpha. Results There were 30 outpatients who participated in the pre-test phase and 111 in the validation phase. There was a positive correlation between the HOOS score in the dimensions of activities of daily living, pain, and symptoms with the physical dimension of the SF12 (r > 0.7; P < 0.001). In the same way, the HOOS quality of life item was correlated with the mental dimension of the SF12 (r = 0.51; P < 0.001). The WHODAS2.0 tool had a moderate negative correlation with all the HOOS dimensions (P < 0.001). Confirmatory factor analysis confirmed good construct validity. Cronbach's alpha was 0.97 for the global questionnaire. Conclusions The Chilean version of the HOOS questionnaire showed adequate validity and reliability, with adequate psychometric properties. This could have relevance in the evaluation and treatment of patients who have hip osteoarthritis and in the evaluation of the results of patients undergoing THA.
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    Medial opening wedge high tibial osteotomy: more than ten years of experience with Puddu plate technique supports its indication
    (2022) Orrego Luzoro, Mario Santiago; Besa Vial, Pablo José; Orrego, Francisca; Amenábar, Diego; Vega Mayer, Jorge Rafael; Irribarra Trivelli, Luis Alfonso; Espinosa, J.; Vial Irarrázabal, Raimundo; Phillips, V.; Irarrázaval Domínguez, Sebastián
    Purpose: To describe the short-term and long-term results of patients who underwent a medial opening wedge high tibial osteotomy (MOW-HTO) for unicompartmental medial knee joint osteoarthritis. Methods: A retrospective review was conducted of patients with MOW-HTO using a Puddu plate®, with more than ten year follow-up. The degree of correction, initial chondral damage, number of meniscal lesions, preoperative and 1-year postoperative functional scale scores (IKDC and Lysholm), and arthroplasty conversion rates at the ten year follow-up were registered. We assumed early indication when patients underwent the operation before they were 40 years old and delayed ≥ 40. Functional outcomes were analyzed by adjusting for pre-operative values. Fisher’s exact test was used to study the association between the arthroplasty conversion rates and the timing of indication. Results: Fifty-five patients were included, 37 of whom were male (67%). Twenty-nine patients had early indications for surgery (53%). All patients completed ten year follow-up. All patients improved IKDC (p < 0.01) and Lysholm (p < 0.01) scores compared to their presurgical scores at the one year post-operative evaluation. We had six minor complications, none requiring revision surgery. We had three conversions to arthroplasty, all in the late indication group, not statistically significant different. Linear regression showed that early indication was associated with a higher IKDC score when adjusting for the Outerbridge chondral damage score, the number of meniscal lesions, and sex (p < 0.01). Conclusion: All patients improved functional scores one year after surgery. Early indication (i.e., younger than 40 years of age) was independently associated with better functional outcomes than late indication at one year follow-up.