Figure 3a. Traumatic neuromas that developed after a below-the-knee amputation in a 33-year-old man. (a) Coronal T1-weighted (500/16) MR image shows two masses. The proximal neuroma (terminal type) has an entering tubular tibial nerve (arrowhead) ending in a bulbous expansion (*). Spindle neuroma resulting from chronic irritation of a small superficial nerve (not visible as a distinct structure) at the prosthesis attachment is seen as a nonspecific mass (arrows). (b) On an axial T2-weighted (4,300/126) image, the proximal lesion has high signal intensity with a fascicular pattern (arrow).