Figure 2From: A 17 year old with isolated proximal tibiofibular joint arthritisBone marrow edema indicative of early right sacroiliitis. (A) Axial FS T2 sequence of the sacroiliac joints, at the level of the mid sacrum, shows edema of both the iliac and sacral (arrow) bones adjacent to the right sacroiliac joint. (B) Coronal FS T2 imaging demonstrates similar bone marrow edema as well as a small amount of fluid within the right sacroiliac joint (arrow).Back to article page