The patellar tendon is a strong band of tissue that connects the patella (kneecap) to the tibia (shinbone). It plays a crucial role in the movement of the knee, allowing for activities such as walking, running, and jumping. The tendon helps transmit the force generated by the quadriceps muscle, which is located at the front of the thigh. Injuries to the patellar tendon, such as tendinitis or tears, can occur due to overuse or trauma. These injuries are often seen in athletes who participate in sports that involve jumping or sudden changes in direction. Proper warm-up and strengthening exercises can help prevent such injuries.