The Value of Dynamic MRI in Cervical Radiculopathy: A Report of Two Cases

Dynamic imaging is well established for evaluating cervical myelopathy but is less commonly utilized for cervical radiculopathy. Typically, cervical radiculopathy is diagnosed using static imaging modalities such as CT or MRI. However, recent studies have demonstrated that spinal disorders can be dynamic in nature and may not be fully captured with static imaging alone. Dynamic MRI (dMRI), performed with the neck in flexion and extension, can assist both in diagnosis and surgical planning. We report two cases of cervical radiculopathy with persistent symptoms despite normal findings on standard static imaging. A dMRI sequence was performed to better visualize the underlying pathology. Notably, movement-dependent changes in the width of the spinal canal were observed. Both patients subsequently underwent artificial disc arthroplasty and experienced complete resolution of their symptoms. While dMRI is not necessary for all patients with spinal conditions, it may offer significant diagnostic value in those with persistent symptoms and inconclusive static imaging. Additionally, it can help clarify spinal anatomy and enhance the precision of surgical planning.