Comparison of Cervical Extensor Muscle Thickness, Fat Infiltration, and Cervical Alignment in Patients With Ankylosing Spondylitis With a Healthy Population: a Retrospective Controlled Study

use Magnetic Resonance Imaging (MRI) to evaluate the cervical muscle planes in AS patients in more detailed and objective ways. In this study, in addition to cervical muscle volumes in AS patients, we also aimed to evaluate cervical fat infiltration and cervical alignment, which have not been previously evaluated in AS patients.