一位20 歲女性病人，幾個月前曾扭傷左踝，主訴左踝部疼痛。附圖為本次就診之磁振影像。最可能的診斷為： Coronal MRI of ankle
secondary osteoarthritis of left tibiotalar joint T1WI T2WI
gouty arthritis of left tibiotalar joint
osteochondritis dissecans of left medial talar dome
chondroblastoma of left medial talar dome
