A patient complains of pain in his right heel. Over the past few weeks, heel pain has worsened. Which factor has contributed most to his worsening heel pain?

• A. Driving a vehicle long distances
• B. Pes planus
• C. Walking in new tennis shoes
• D. Riding a bicycle

Answer: (D)

The key idea is that heel pain from conditions like plantar fascia inflammation worsens with activities that repeatedly load and stretch the heel structures. Riding a bicycle tends to place the heel in a position and subject it to a continuous pedaling load, especially if the footwear is stiff and the pedal stroke keeps the foot in a plantarflexed position. That repetitive compression and traction on the heel region aggravates inflammation over time, making pain worse.

Driving long distances mainly loads the leg intermittently without sustained heel pressure. Flat feet (pes planus) predispose to heel discomfort but are a structural risk rather than an activity that actively aggravates symptoms in the short term. Walking in new tennis shoes can cause some irritation due to changes in support or fit, but it’s typically less cumulative impact than the repetitive loading from cycling.

So, the factor most likely to contribute to the worsening heel pain in this scenario is riding a bicycle.