60-year-old female with foot pain for years getting worse with burning. Evaluate for tear in the plantar fascia. TENDONS: There is fluid within the peroneal tendons as they course distal to the fibular tip suggesting tenosynovitis. There is flattening of the peroneus brevis tendon beneath the fibular tip which may represent a partial-thickness longitudinal split tear, but this is equivocal. The remaining ankle tendons appear normal.LIGAMENTS: The lateral collateral ligament complex is grossly intact. The distal tibiofibular syndesmotic complex appears intact. Visualized components of the deltoid ligament appear intact. ARTICULAR SURFACES AND BONE: The tibiotalar joint appears normal for age. There is an os trigonum posterior to the talus. The os trigonum is surrounded by fluid but we see no edema within this accessory ossicle or the posterior talus. There is a small plantar calcaneal heel spur. Moderate osteoarthritic changes affect the talonavicular joint with a defect along the articular surface of the navicular and underlying edema which may reflect old trauma.ADDITIONAL
1. Findings compatible with mild plantar fasciitis as described above, without evidence of a tear of the plantar fascia.2. Peroneal tenosynovitis with possible partial-thickness longitudinal split tear of the peroneus brevis.3. Findings suggestive of sinus tarsus inflammation as described above.4. Osteoarthritis of the talonavicular joint which may be secondary to prior trauma.5. Os trigonum as described above.