Fig. 5
From: Stress fracture of the pelvis and lower limbs including atypical femoral fractures—a review
An elderly female patient with foot pain. AP (a) and lateral (b) radiographs of the ankle show osteopenia but do not show a reason for significant foot pain. Coronal (c) and sagittal (d) PD-FS sequences show significant bone marrow oedema-like changes in the medial malleolus, lateral ankle joint, calcaneus and navicular and cuboid. In the lateral talar trochlea there is focal low signal change in fluid sensitive (d) and T1w sequences (e) consistent with focal subchondral infraction (black arrows). The sagittal T1w sequences (e) demonstrate low signal lines in the cancellous bone indicating stress fracture lines in cancellous bone (arrowheads)