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).
Describe the muscles that enable the knee joint to move. At full extension tibia and femur lock into position providing stability in the leg and improving load bearing capacity.The popliteus muscle at the back of the leg unlocks the knee by rotating the femur on the tibia, allowing flexion of the knee.