Novel presentation of rigid flat foot flexor hallucis longus passing through the subtalar joint: A comprehensive case report

• DOI: 10.1016/j.radcr.2024.07.106
• Publication Date: 2024-08-24T00:12:48Z
• Authors: Mohammad Alkhreisat; Khairat Battah; Osama Aldahamsheh; Mohammad Alananzh; Omar Ababneh; Iyad Farouji
• Keywords: Medical physics. Medical radiology. Nuclear medicine; 03 medical and health sciences; 0302 clinical medicine; Flat foot; R895-920; Case Report; Flexor hallucis longus; Subtalar joint; Sustentaculum tail; Pes cavus deformity

This case report presents a novel cause of rigid flatfoot caused by the entrapment of the Flexor Hallucis Longus (FHL) tendon within the subtalar joint. A 19-year-old male with chronic right ankle and foot pain diagnosed with rigid flatfoot deformity. MRI identified the FHL tendon entrapped within the subtalar joint, a condition to our knowledge never previously reported. This report highlights the importance of thorough clinical evaluation and advanced imaging techniques in diagnosing rare causes of rigid flatfoot and suggests that surgical options may still be valid for such rare presentations.