Anterior Cruciate Ligament (ACL) Inclination angle measurement. Case Series
DOI:
https://doi.org/10.1016/j.rccot.2021.04.001Keywords:
anterior cruciate ligament, magnetic resonance imaging, anatomy, angle of inclinationAbstract
Background: The evaluation of the inclination of the anterior cruciate ligament (ACL) is useful to clarify diagnostic doubts in patients who have not been taken to reconstructive procedures and to evaluate the quality and effectiveness of restoring the anatomical attachments of the ligament. after an ACL surgery reconstruction. However, in our environment there is no local measurement reference or training in measuring it inclination angle. The aim of the study is to measure the inclination angle of the ACL in healthy knees of our population, using magnetic resonance (MRI) measurement techniques.
Methods: A Case Series study was performed, including patients who underwent to knee MRI between June 2013 and June 2017 that were read as normal. Inclination angle measurements of the ACL were taken in the sagittal, coronal, and axial planes.
Results: 91 patients were included (45% (n = 41) Men / 55% (n = 50) Women). An ACL inclination angle was found in the sagittal plane with a mean of 45.31 (SD: 5.39), in the coronal plane of 70.68 (SD: 5.79) and 68.49 (SD: 5.61) in the axial plane, with no imaging differences found. segmented by sex, age or laterality.
Discussion: TherearenodifferencesintheMRIimagesintheangleofinclinationinanyofthe three planes between men and women, neither with regard to laterality or age groups. Results were obtained that have not yet been described in the literature; those obtained are similar to those reported in the literature
Evidence Level: IV.
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