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).
In genu valgus the increased pressure onto the inside surfaces leads to a chondromalacia of the medial compartments on both sides. In bowleggedness the pressure on the outside parts of the knees leads to lateral knee compartment chondromalacia on both sides. If the pain leads to the patient resting more, there often is a corresponding muscle atrophy of the quadriceps muscle on one or both sides.