Fig. 5

Proximal lesions of the rectus femoris. Fluid-sensitive MRI sequences showed (a) gap of the central septum with edema and loss of the pennation angle of the muscle fibers of myoconnective anchor center (axial and coronal images); gap of the aponeurosis (arrows) with interfascicular and intermuscular hemorrhage (b) (axial and sagittal images); discontinuity of the connective tissue of lesser thickness (dashed arrows) with peripheral fluid and fiber gap in the anchorage of peripheral myoconnective fibers (c) (axial and sagittal images)