Which peripheral pulse is found behind and below the ankle on the inner leg?

The posterior tibial artery is the pulse that is found behind and below the ankle on the inner leg. This artery is responsible for supplying blood to the posterior compartment of the leg and the plantar aspect of the foot. It can be palpated in the region just posterior to the medial malleolus, which is the bony prominence on the inner side of the ankle.

Understanding the anatomical location of this artery is crucial for clinical practice, especially in vascular assessments and interventions. The ability to locate the posterior tibial pulse can provide important information about the vascular status of the leg and can help identify conditions such as peripheral artery disease.

The popliteal artery, while a significant vessel in the lower extremity, is located behind the knee and does not correspond to the area described in the question. The femoral artery is situated in the groin and supplies blood to the lower limb but is not located near the ankle. The brachial artery is found in the upper arm and is unrelated to the lower extremity anatomy. Thus, the posterior tibial artery is the only correct answer for this specific location.