[Predictive Model for Complications in Total Hip Arthroplasty: Development of a Clinical Tool].

Authors

Andrea Moreira Candido, Conrado Torres Laett, Alanna Martins Soares de Palma, Lourenço Pinto Peixoto, Sidnei Cavalcante da Silva

Published in

Revista brasileira de ortopedia. Volume 61. Issue 3. Pages s00461824727. Epub Oct 06, 2026.

Abstract

To develop a predictive model to estimate complications up to 30 days after total hip arthroplasty (THA), based on clinical and functional variables, aiming at the creation of a practical tool for clinical use.
Prospective cohort study conducted in a public referral hospital, with patients undergoing primary and elective THA between November 2021 and April 2022. The sample included 122 patients (mean age: 56 years, 59.8% men). Clinical, sociodemographic, and functional capacity variables were evaluated and estimated by the Duke Activity Status Index (DASI). Outcomes included clinical complications, early readmission, prolonged hospitalization (> 6 days), and ICU stay for more than one day. A logistic regression model was used, with performance evaluated by the C-statistic (AUC), and the model was incorporated into an online tool.
The most prevalent comorbidities were hypertension (61%), diabetes (23%), and dyslipidemia (15%). Complications within 30 days occurred in 13.1% of patients, with surgical wound infection and anemia being the most common events. Dyslipidemia (OR: 4.70; p  = 0.010), sedentary lifestyle (OR: 4.71; p  = 0.026), high ASA classification (OR: 3.67; p  = 0.035), and functional capacity < 4 metabolic equivalents of task (METs) (OR: 4.08; p  = 0.040) were significant risk factors. The tool is available at https://upneuro.shinyapps.io/atq-pred .
Dyslipidemia, sedentary lifestyle, low functional capacity, and high ASA classification were associated with a higher risk of post-THA complications. The preoperative evaluation should include functional and cardiovascular aspects. The model showed good accuracy, and further studies are needed to validate its clinical application.
This is a prospective cohort study without a control group aimed at identifying prognostic factors for complications after total hip arthroplasty.

PMID:
42840930
Bibliographic data and abstract were imported from PubMed on 07 Oct 2026.

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