Diagnostic accuracy of magnetic resonance images and weight-bearing radiographs in patients with arthroscopic-proven medial osteoarthritis of the knee

Autor: Rosario Madero-Jarabo, Nuria Muñoz-García, José Cordero-Ampuero
Přispěvatelé: UAM. Departamento de Cirugía
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Clinical Medicine Insights. Arthritis and Musculoskeletal Disorders
Biblos-e Archivo. Repositorio Institucional de la UAM
instname
Biblos-e Archivo: Repositorio Institucional de la UAM
Universidad Autónoma de Madrid
Clinical Medicine Insights: Arthritis and Musculoskeletal Disorders, Vol 13 (2020)
DOI: 10.1177/1179544120938369
Popis: Aims: The aim of this study is to analyze the diagnostic value of weight-bearing radiographs, magnetic resonance images (MRI), and the combination of both in osteoarthritic knees when using arthroscopic findings as the “gold standard” to compare with. Methods: A total of 59 patients were studied because of chronic pain in 1 of their knees. Radiographs were classified according to Kellgren-Lawrence scale. Magnetic resonance images were classified according to Vallotton, and arthroscopic findings according to Outerbridge criteria. Results: Sensitivity, specificity, positive predictive value, negative predictive value, and accuracy were, respectively, 75.0%, 60.0%, 56.2%, 77.8%, and 66.1% for weight-bearing radiographs, and 70.8%, 88.6%, 81.0%, 81.6%, and 81.4% for MRI. Logistic regression analysis showed that a weight-bearing radiograph added to MRI offered no additional diagnostic value compared with MRI alone ( P Conclusions: Magnetic resonance images presented higher specificity, positive and negative predictive values, and accuracy than weight-bearing radiographs for knee osteoarthritis. The combination of radiographs and MRI did not improve the diagnostic accuracy, compared with MRI alone.
Databáze: OpenAIRE