Figure 2.

A 52-year-old female with bilateral hip pain for 3 months. She showed tenderness and positive Patrick’s test bilaterally.(a) Plain radiography of the pelvis does not show apparent fracture line.(b) Coronal reconstruction image of standard-dose pelvic bone CT shows faint irregular lines on both femoral heads, suggesting insufficiency fractures (arrows). Initial diagnosis missed these lesions.(c) Fat suppressed T₂ weighted coronal image [Repetition Time (TR)/Echo Time (TE) = 3200, 40 ms] showing subchondral insufficiency fractures in both femoral heads (arrows).