When the knee is flexed, the point is 2 cun proximal to the superior medial border of the patella, on the bulge of the medial portion of quadriceps femoris muscle. Or with the patient's knee is flexed, place the heel of your right palm on the patient's left patella, with the thumb and fingers fully extended and the thumb at a 45° angle with the index finger. The point is where the tip of your thumb rests.
