Table 2.

Pearls and Pitfalls

Pearls	Pitfalls
The examiner should ensure that a position of 20° of knee flexion is maintained during varus and valgus maneuvers with the knee flexed, aiming to standardize evaluations and comparisons.	Flexing the knee more than the recommended 20° can yield unreliable results.
When obtaining kneeling radiographs of the affected knee, the examiner should make sure that the thigh of the examined knee is tilted 10° toward the x-ray film so that the femoral condyles are superimposed, facilitating the interpretation of the examination findings. It is important that the knee being examined is the one closest to the x-ray film.	If the femoral condyles are not superimposed on the kneeling radiograph, it is impossible to precisely measure the posteriorization of the tibia in relation to the femur.
The examiner must simulate the positioning of the kneeling radiograph, showing the patient how he or she should position himself or herself; this will facilitate the patient’s understanding of the examination and speed up the procedure.	The examiner should make sure that the cushion used to obtain the kneeling radiograph is comfortable for the patient, preventing him or her from feeling pain during the examination and not staying in the desired position.