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.
In addition to lead III and V3, aVL is the third lead I usually choose to continuously monitor for patients who present with signs and symptoms concerning for ACS but no diagnostic changes on their initial 12-lead. The main reason I like aVL for this purpose is that it is the lead most reciprocal to lead III. As we just discussed, III is the lead that best shows ST-elevation or T-wave changes during most inferior STEMIâs, so being able to observe reciprocal ST/T-changes in aVL can help ...