Accessory anterolateral talar facet impingement with tibialis spastic varus foot.
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In recent years, some authors have reported accessory anterolateral talar facet impingement with flatfoot including peroneal spastic flatfoot. Conversely, to our knowledge, no case report has been published about accessory anterolateral talar facet impingement with tibialis spastic varus foot. We report the first case in a 22-year-old man with intellectual disability, bilateral cleft hands and type 1 diabetes mellitus. Since spraining his left ankle over a year earlier, he experienced left sinus tarsi pain while standing and walking. Physical examination revealed that his left foot was in the varus position with spasm of the anterior tibial muscle, tenderness in the sinus tarsi and lateral hindfoot pain upon attempted passive hindfoot eversion. He could not stand on his left toes. His pain decreased after lying down and receiving a massage on his anterolateral lower leg at night. Radiographs and computed tomography scans revealed the absence of tarsal coalition and the presence of accessory anterolateral talar facet in both feet. Magnetic resonance imaging demonstrated abutting bone marrow edema between the talus and calcaneus around the accessory anterolateral talar facet. We diagnosed the patient with accessory anterolateral talar facet impingement and tibialis spastic varus foot. After conservative treatment failed, resection of accessory anterolateral talar facet achieved good results with short-term follow-up.