Iselin disease (ID) is a benign and self-limiting condition, defined as apophysitis of the base of the 5th metatarsal.
It is most commonly seen in males with sport injuries and is often also seen in adolescents.
It is due to repetitive traction of the peroneus brevis tendon at the site of its attachment. Predisposing factors are jumping and running.
- obliquely oriented small bony fleck at the base of the 5th metatarsal which is best seen on oblique radiograph
- apophyseal irregularity
Usually not considered essential for the diagnosis. But if performed may show:
- T2/STIR: high signal intensity around base of 5th metatarsal due to bone marrow edema 6
History and etymology
First described by H Iselin, a German physician in 1912 4.
On imaging consider: