Ultrasound image of a foot. The arrow points to a dark region in the plantar fascia, indicating plantar fasciitis. Between the two yellow lines is the plantar fascia. The calcaneus bone is circled on the left and appears white.
Ultrasound image of PRP injection for plantar fasciitis. Arrow points to needle (white line) at an angle and a dark spot to the left of the arrow head indicating plantar fasciitus.