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Visualization of retrotalar space: arthroscopic superior-inferior view of medial side of ankle. The patient is in the prone position during the intervention. Assessment of the space created by resection of the pulley is performed, and the possible need to excise synovial remnants or bony overgrowth to maximize the space is evaluated. (1, retrotalar pulley; 2, flexor hallucis longus tendon; 3, retrotalar tunnel; 4, talus.)
