What symptom is commonly associated with iliotibial band syndrome?

• A. Pain on the outer side of the knee.
• B. Pain in the heel during movement.
• C. Swelling behind the knee.
• D. Instability in the ankle joint.

Answer: (A)

Iliotibial band syndrome is primarily characterized by pain on the outer side of the knee. This condition occurs due to irritation or inflammation of the iliotibial band, a thick band of tissue that runs along the outside of the thigh from the hip to the knee. As the band moves over the femoral condyle during activities like running or cycling, it can cause friction and result in localized pain, typically experienced during these movements.

The other symptoms mentioned in the other options do not align with iliotibial band syndrome. Pain in the heel during movement suggests issues such as plantar fasciitis or other heel problems. Swelling behind the knee may indicate conditions like a Baker's cyst or other knee-related injuries, while instability in the ankle joint points to ankle sprains or ligamentous injuries. Therefore, the focus on pain on the outer side of the knee is what makes it the hallmark symptom for iliotibial band syndrome.