Demystifying MR Neurography of the Lumbosacral Plexus: From Protocols to Pathologies

Figure 5

34-year-old male with history of chronic pain after traumatic injury in motorcycle accident for 2 months with surgery on the femur with plaque placement. MRN images in coronal STIR 3D SPACE ((a) and (b)) and axial T2 fat suppression (c) show signs of right femoral neuropathy, with thickening and elevation of the femoral nerve signal in the retroperitoneal and proximal thigh trajectory (arrowhead). Early stage denervation is associated with edema and a slight contrast enhancement of the distal iliopsoas (star) and pectineus (wavy arrow) muscles.

(a)

(b)

(c)