middle aged woman suffering from knee ache,patella friction against the thigh bone,painful in the kneecap,patellofemoral pain

knee ache patella friction thigh bone painful patellofemoral pain syndrome joint discomfort asian middle aged woman ligament injury problem inflammation stiffness concept medical health care tingling holding kneecap muscles disease tendon senior leg hurt soreness illness sore osteonecrosis swelling joints female tension accident people muscle outdoor adult