Ultrasound guided steroid injection of the ankle. a. The anterior portion of the ankle joint (*) is seen in between the distal tibial epiphysis and the talus (T). b. It is crucial to identify prior to the injection, the location of the anterior tibial artery becoming the dorsalis pedis artery (arrow), anterior to the ankle joint (*) using grey scale and color-Doppler. c. Simulated ankle joint injection in a mannequin showing the advancement of the needle using an “out-of-plane” approach. d. The needle tip is clearly visualized being advanced into the joint space (arrow).