Where does plantar fasciitis most frequently occur?

Plantar fasciitis most frequently occurs in the arch of the foot due to the condition affecting the plantar fascia, which is a thick band of tissue that runs along the bottom of the foot. This band stretches from the heel to the toes and plays a crucial role in supporting the arch.

When excessive pressure or strain is placed on the plantar fascia—often due to factors such as overuse, improper footwear, or being overweight—it can become inflamed and painful, leading to the characteristic discomfort associated with plantar fasciitis. The pain is typically felt at the bottom of the foot near the heel and can make activities such as walking or standing challenging.

In contrast, other options refer to different anatomical structures that are not associated with plantar fasciitis. The knee cap, Achilles tendon, and lower back all have distinct functions and common ailments that do not involve the plantar fascia. Therefore, focusing on the arch of the foot is essential for understanding where plantar fasciitis typically manifests and why.