The knee joint functions as a stabilizer for the lower extremity during weight bearing and allows large range of motion for various functional activities. The two primary articulations of the knee joint are the tibiofemoral joint and the patellofemoral joint.
1. electrocardiogram recorded between one limb and two other limbs. The augmented leads are designated aVF, aVL, and aVR for recordings made between the foot (left), left arm, and right arm, respectively, and the other two limbs. The definition information for augmented lead is provided by Stedman's.
Conclusion. The unipolar of V lead technique we just presented is used on a horizontal plane with the chest orprecordial leads. The precordial leads consist of a positive electrode strategically placed on the chest. The positions of these precordial leads are shown in the preceding illustration. These chest leads detect electrical impulses from the heart on a horizontal plane across the heart.