DSpace Angular :: Browsing by Author "Lira Salas, María Jesús"

Browsing by Author "Lira Salas, María Jesús"

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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.
Contamination rate of the surgical gowns during total hip arthroplasty
(2019) Klaber Rosenberg, Ianiv Walter; Ruiz, Pablo; Schweitzer Fernandez, Daniel Alberto; Lira Salas, María Jesús; Botello Correa, Eduardo Andrés; Wozniak Banchero, Aniela
Introduction: Surgical instrument contamination during total joint replacement is a matter of major concern. Available recommendations suggest changing suction tips, gloves and avoiding light handle manipulation during the procedure. There is a paucity of data regarding surgical gown contamination. The aim of the present study was to evaluate the contamination rate of surgical gowns (SGs) during total hip arthroplasty (THA) and secondarily compare it with other orthopedic procedures. Materials and methods: One hundred and forty surgical gowns (from 70 surgeries) were screened for bacterial contamination using thioglycolate (a high-sensitivity culture broth). The THA contamination rate was compared with those of knee and spine procedures. Controls were obtained at the beginning of every surgery and from the culture broth. The procedure’s duration and the level of training of the surgeon were evaluated as potential risk factors for contamination. Results: Bacterial contamination was identified on 12% of surgical gowns (22% of surgical procedures). The contamination rate during THA was 4.1% (2% in primary THA and 8.3% in revisions) vs 21.67% during other surgeries (spine and knee) (OR 6.15, p = 0.012). There were no contaminated SGs during THAs performed in ≤ 2 h (0/33 SGs) vs 7.5% (3/40) for THAs that took ≥ 2 h (p = 0.25). Conclusion: There was a high rate of SG contamination during orthopedic procedures that was higher during non-arthroplasty procedures and prolonged THAs. There were no contaminated surgical gowns in THAs under 120 min, efforts should point keeping primary THAs under this cutoff time. As a general recommendation, SGs should be changed every time there is concern about potential contamination. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
Disparity in access to orthopedic surgery between public and private healthcare insurance: a nationwide population-based study
(Springer Nature, 2025) Lira Salas, María Jesús; Pino Pommer, Paula; Vidal Olate, Catalina Victoria; Mery I., Pamela; Irarrázaval, Sebastián; Cerda, Jaime; Vergara Leyton, Jorge
Background This study aimed to evaluate if access to orthopedic surgery differs by healthcare coverage in a country with a dual healthcare system adjusted by age, sex, and urgent and elective conditions. We hypothesize that differential access would exist according to the type of healthcare coverage. This difference would accentuate when analyzing access to elective orthopedic surgery. Methods A cross-sectional, population-based design was used to investigate orthopedic surgery rates in Chile in 2018. The rates of orthopedic surgeries provided under the private and public healthcare systems were calculated per 1,000 inhabitants based on data collected from the Hospital Discharge Registry provided by the Chilean Ministry of Health. ICD-10 diagnoses were classified as urgent or elective, categories into which the public/private surgery rates were also sorted. Results The overall rate of orthopedic surgery was 7.54 per 1000 inhabitants in 2018. Patients covered under private insurance had an orthopedic surgery rate 2.23 times higher than patients within the public system (p-value < 0.001). This difference became more accentuated when sorting by elective surgeries, with private healthcare having a rate 2.97 times higher than public healthcare (p-value < 0.001). In the multivariate analysis, significant differences were observed in the rates of orthopedic surgery, being higher in the private system, elective surgeries, and older adults. No significant differences were observed according to sex (p-value 0.270). Conclusions In Chile, access disparity to orthopedic surgical care existed between private and public healthcare systems, elective surgeries, and older age groups. Disparity in access became greater when separately analyzing the rates of elective and urgent orthopedic surgeries. Level of evidence III.
Methicillin-resistant Staphylococcus aureus colonization in patients undergoing primary total hip arthroplasty
(2020) Schweitzer, Daniel; Klaber Rosenberg, Ianiv; García Muñoz, Patricia; López, F.; Lira Salas, María Jesús; Botello Correa, Eduardo
Tibial tubercle to trochlear groove and the roman arch method for tibial tubercle lateralisation are reliable and distinguish between subjects with and without major patellar instability
(2024) Irarrázaval Domínguez, Sebastián; Besa Vial, Pablo José; Fernández, Tomás; Fernandez Schlein, Francisco Andrés; Aguirre Donoso, Rodrigo; Tuca De Diego, María Jesús; Lira Salas, María Jesús; Orrego Luzoro, Mario Santiago

Browsing by Author "Lira Salas, María Jesús"

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