Final answer:
The athlete is likely experiencing plantar fasciitis, which is inflammation of the plantar fascia ligament causing heel pain. Treatment involves rest, stretching exercises, orthotic devices, and physical therapy.
Step-by-step explanation:
Based on the provided information, the athlete is likely experiencing a condition known as plantar fasciitis. Plantar fasciitis is a common injury that causes heel pain, especially during the first steps out of bed in the morning.
The positive findings in the evaluation, such as tenderness on the calcaneal tubercle and the Windlass test, further support this suspicion. Plantar fasciitis is inflammation of the plantar fascia, a ligament that runs along the bottom of the foot from the heel to the toes.
This condition is often associated with overuse, high-impact activities like running, and certain foot postures such as pes planus (flat feet). Treatment typically involves rest, stretching exercises, orthotic devices, and sometimes physical therapy.