The calcaneal tendon, also known as the Achilles tendon, is the largest and strongest tendon in the human body. It connects the calf muscles to the heel bone and is essential for walking, running, and jumping. Although the term "calcaneal tendon" is the most commonly used term, there are several synonyms for this crucial structure. These include the heel cord, tendo Achillis, tendocalcaneus, and dorsal tendon of the foot. Regardless of the term used, the calcaneal tendon plays a vital role in the movement and stability of the foot and ankle.