Reason: evaluate for peroneal brevis tendon rupture History: pain and swelling increased at 5th metacarpal base R after tripping on curb and feeling a pop TENDONS: There is a small amount of fluid within the tendon sheaths of the peroneal tendons which may reflect a very mild tenosynovitis. The tendons themselves appear intact. The flexor and extensor tendons appear intact. The Achilles tendon is normal in appearance.LIGAMENTS: The distal tibiofibular syndesmotic complex appears intact. The lateral collateral ligament complex appears intact. The imaged components of the deltoid ligament appear intact.ARTICULAR SURFACES AND BONE: There is subchondral cyst formation within the lateral aspect of the talar dome and distal fibular tip likely degenerative in etiology. Degenerative osteoarthritic changes affect the calcaneocuboid articulation.ADDITIONAL
1. Mild peroneal tendon tenosynovitis. 2. Small subtalar joint effusion.3. Osteoarthritis of the ankle and midfoot.