<abstract xmlns="http://www.w3.org/1999/xhtml"><sec id="j_raon-2020-0021_s_005_w2aab3b7c64b1b6b1aab1c16b1Aa"><h3>Background</h3><p>Magnetic resonance imaging (MRI) is a non-invasive highly sensitive tool for diagnosing chondromalacia patellae in the early stages. Many studies have evaluated patellar and trochlear morphology with different radiologic indices. We aimed to assess the discriminative power of tibial, patellar, and femoral indices in MRI for chondromalacia patellae.</p></sec><sec id="j_raon-2020-0021_s_006_w2aab3b7c64b1b6b1aab1c16b2Aa"><h3>Patients and methods</h3><p>100 cases of chondromalacia, as well as 100 age-matched controls among the patients who underwent knee MRI between February 2017 and March 2019, were included. The standard protocol of knee MRI was applied and the diagnosis of chondromalacia was made on MRI findings. Chondromalacia subjects were also classified as grade 1 to 4 according to the Modified Outerbridge’s MRI grading system. We measured 25 MRI parameters in the knee and adjacent structures to determine the relation between chondromalacia patellae and anatomical MRI parameters.</p></sec><sec id="j_raon-2020-0021_s_007_w2aab3b7c64b1b6b1aab1c16b3Aa"><h3>Results</h3><p>Tibial slope, trochlear depth, lateral trochlear inclination, and lateral patellar tilt angle had significant correlation with chondromalacia. Any increase in lateral trochlear inclination and lateral patellar tilt angle could increase the probability of the disease (Odds ratio [OR] 1.15, 1.13; 95% CI: 1.03–1.30; 1.02–1.26, respectively), while any increase in medial tibial slope and trochlear depth could decrease the probability of chondromalacia (OR 0.85, 0.06; 95% CI: 0.73–0.98, 0.02–0.17, respectively). We also designed a model for the severity of disease by using the patellar height index (relative odds ratio: 75.9).</p></sec><sec id="j_raon-2020-0021_s_008_w2aab3b7c64b1b6b1aab1c16b4Aa"><h3>Conclusions</h3><p>The result of this study showed the novelty role of tibial anatomy in developing chondromalacia and its mechanism. We also concluded that patellar height might be an important factor in defining disease severity.</p></sec></abstract>

BackgroundMagnetic resonance imaging (MRI) is a non-invasive highly sensitive tool for diagnosing chondromalacia patellae in the early stages. Many studies have evaluated patellar and trochlear morphology with different radiologic indices. We aimed to assess the discriminative power of tibial, patellar, and femoral indices in MRI for chondromalacia patellae.Patients and methods100 cases of chondromalacia, as well as 100 age-matched controls among the patients who underwent knee MRI between February 2017 and March 2019, were included. The standard protocol of knee MRI was applied and the diagnosis of chondromalacia was made on MRI findings. Chondromalacia subjects were also classified as grade 1 to 4 according to the Modified Outerbridge’s MRI grading system. We measured 25 MRI parameters in the knee and adjacent structures to determine the relation between chondromalacia patellae and anatomical MRI parameters.ResultsTibial slope, trochlear depth, lateral trochlear inclination, and lateral patellar tilt angle had significant correlation with chondromalacia. Any increase in lateral trochlear inclination and lateral patellar tilt angle could increase the probability of the disease (Odds ratio [OR] 1.15, 1.13; 95% CI: 1.03–1.30; 1.02–1.26, respectively), while any increase in medial tibial slope and trochlear depth could decrease the probability of chondromalacia (OR 0.85, 0.06; 95% CI: 0.73–0.98, 0.02–0.17, respectively). We also designed a model for the severity of disease by using the patellar height index (relative odds ratio: 75.9).ConclusionsThe result of this study showed the novelty role of tibial anatomy in developing chondromalacia and its mechanism. We also concluded that patellar height might be an important factor in defining disease severity.

Relation of the chondromalatia patellae to proximal tibial anatomical parameters, assessed with MRI

Radiology and Oncology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

BackgroundMagnetic resonance imaging (MRI) is a non-invasive highly sensitive tool for diagnosing chondromalacia patellae in the early stages. Many studies...

Relation of the chondromalatia patellae to proximal tibial anatomical parameters, assessed with MRI

Article Category: Research Article

Data publikacji: 21 kwi 2020

Zakres stron: 159 - 167

Otrzymano: 13 lut 2020

Przyjęty: 18 mar 2020

DOI: https://doi.org/10.2478/raon-2020-0021

© 2020 Mohammadreza Tabary, Azadehsadat Esfahani, Mehdi Nouraie, Mohammad Reza Babaei, Ali Reza Khoshdel, Farnaz Araghi, Mostafa Shahrezaee, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.