Knee Pain - Vastus Medialis Trigger Points     Patellofemoral Pain Syndrome (Runner's Knee) is often associated with trigger points in the quadriceps muscles Pain in the patella (kneecap), especially after sitting for a long time or running downhill, may result from incorrect movement of the patella over the femur or tight tendons. The articular cartilage under the patella may become inflamed as well, leading to another condition called chondromalacia patellae which is found more commonly in women. The angle formed between the two lines of pull of the quadriceps muscle and the patellar (tendon) ligament is known as the...