Case Report

Posterior Ankle Arthroscopy for Osteochondromatosis of the Posterior Ankle Extra-Articular Space with a Longitudinal Tear of Flexor Hallucis Longus

Figure 4

Magnetic resonance imaging shows several small fusiform masses (arrow) surrounded by a fluid signal on T2-weighted (a) and short T1 inversion recovery (b) scans in the sagittal plane.
(a)
(b)