Original report - Intraarticular osteoid osteoma: Sonographic findings in three patients with radiographic, CT, and MR imaging correlation

OBJECTIVE. Intraarticular osteoid osteoma often has subtle radiographic fin dings and nonspecific clinical features; further diagnostic workup of unexp lained joint pain may involve musculoskeletal sonography. We describe the s onographic features of intraarticular osteoid osteoma in three consecutive patients with radiographic, CT, and MR imaging correlation. CONCLUSION. The sonographic findings of painful cortical irregularity and f ocal synovitis should raise the possibility of intraarticular osteoid osteo ma, prompting the search for characteristic findings on correlative imaging studies.