Case Reports in Orthopedics / 2014 / Article / Fig 3

Case Report

Intra-Articular Osteoid Osteoma Mimicking Juvenile Arthritis

Figure 3

8-year-old boy with osteoid osteoma of the left talar neck. Synovial thickening of the ankle and subtalar joint was diagnosed with echography. X-ray showed ankle effusion but no bone anomaly was initially reported. However retrospective X-ray analysis showed a talar neck hyperostosis.