What is ADHD? ADHD (attention deficit-hyperactivity disorder) affects both adults and school-aged children. Symptoms include restlessness, difficulty paying attention, and hyperactivity. The causes of ADHD are unknown, however factors such as diet, environment and genetics may contribute to symptoms.
The knee muscles control how the knee joint and patella move. There are two main groups of muscles, the quadriceps and the hamstrings, as well as a small muscle behind the knee (popliteus).
What is the flat rope like tissue behind the knee? is this a tendon, ligament? What ligaments and tendons are below the knee on the outside and underneath? What are tendons and ligaments and what are they composed of? What are the functions of tendons and ligaments?