An Achilles tendon rupture occurs when the large tendon at the back of the ankle tears, often due to sudden movements or excessive strain. This injury is common in sports that involve quick starts and stops, such as basketball or tennis. Symptoms typically include a sudden sharp pain, swelling, and difficulty walking. Treatment for an Achilles tendon rupture may involve rest, ice, and elevation, along with physical therapy. In some cases, surgery may be necessary to repair the tendon. Recovery can take several months, and rehabilitation is essential for regaining strength and mobility.