osteoid osteoma ( RID4005 )
This is follow up to case #1517. Images are now 14 months after the pre-op MRI, and subsequent arthroscopic debridement for anterolateral impingement. She was symptom free and dancing for 2 months. Now there is clearly an osteoid osteoma at the anterolateral talar head-neck junction...apparently a classic location (though Ive not seen it). The degree of reactive BME and soft tissue extracapsular edema should not have suggested anterolateral soft tissue impingement. The literature says that clinical evaluation is more accurate for diagnosis of ALI, and I suspect her symptoms were classic. Pity there was no CT at the time of initial MRI...I wonder if the nascent nidus would have been visible at all. I do think the small, dark signal subcortical focus in the same location was the osteoid osteoma in its formative phase.
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