Medial malleolus swelling Tendons: The tibialis anterior, extensor hallucis longus, and extensor digitorum longus tendons are intact and demonstrate a normal course.The tibialis posterior, flexor hallucis longus, and flexor digitorum longus tendons are intact and demonstrate a normal course. The peroneal tendons are intact and demonstrate a normal course.The Achilles tendon is intact. The plantar aponeurosis is intact. There is no tendinosis or tenosynovitis.Ligaments: The anterior talofibular, calcaneofibular, and posterior talofibular ligaments are intact. The anterior and inferior tibiofibular ligaments are intact. The deep and superficial components of the deltoid ligament are intact. The spring ligament is intact.Joints: Along the medial malleolus is a small fluid collection which demonstrates thin peripheral enhancement. There is no abnormal internal signal or associated osseous abnormality adjacent to the collection. A mild amount of subcutaneous edema is seen tracking along the medial soft tissues. There is no joint effusion. The articular cartilage of the ankle joint is intact and without evidence of full thickness defect. There are no osteochondral lesions of the ankle articulation.Alignment: There is normal alignment.Sinus tarsi: The sinus tarsi is normal with preservation of fat signal.Muscles: There is no muscle atrophy or tear.Bone marrow: The bone marrow signal is normal. There is no fracture or contusion. There is no marrow replacing lesions.
Bursitis of the medial malleolus. Remaining evaluation of the ankle is otherwise unremarkable.