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.
Traditional current transformers provide a current output to the meter. The CT is rated for both its primary current and its secondary current, the primary being the level of current flowing in the circuit it is to measure, the secondary being the current flowing in the output circuit (the one connected to the meter) An alternative 21st century approach is the 'voltage output' CT.