Common reasons include muscle imbalance whether it is weakness or tightness, poor alignment ok knee cap, over use of leg resulting from excessive impact of high activities, flat foot deformity and finally the anatomical abnormalities in the knee cap shape and the grove in which it sits. Collectively all these conditions result to a condition known as chondromalacia patella which results in pain and inflammation. This is typically seen in young adults particularly women, they typically present with the pain in the front of the knee which is precipitated by going up or down stairs or when they try to sit up and walk after a prolonged period of rest.
