injuries poisoning
Knee Pain
Diagnosis of Knee Pain
History and physical examination Sometimes imaging tests Diagnosis requires a thorough review of the injured athlete’s training program, including a history of symptom onset and aggravating factors, and a complete lower-extremity examination (for knee examination, see Physical Examination and see Mechanical symptoms, such as locking or catching, suggest an internal derangement of the knee such as a meniscal tear. Instability symptoms, such as giving way and loss of confidence in the extremity when twisting or turning on the knee, suggest ligamentous injury or subluxation of the patella. Chondromalacia is suggested by anterior knee pain after running, especially on hills, as well as pain and stiffness after sitting for any length of time (positive movie sign), although this is not specific for chondromalacia. On examination, pain is typically reproduced by compression of the patella against the femur. Pain that becomes worse with weight-bearing suggests a stress fracture. 