Lower Limb Circulation
Lower Limb Circulation - Related Videos
04:20
Non-Invasive Limb Ischemic Preconditioning in a Rat Model for Neuroprotection
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2025
Source: Brandli, A. Remote Limb Ischemic Preconditioning: A Neuroprotective Technique in Rodents. J. Vis. Exp. (2015)This video demonstrates a non-invasive limb ischemic preconditioning protocol in rats to induce systemic neuroprotection. The procedure involves controlled arterial occlusion and reperfusion, triggering cellular stress pathways that release protective factors. These factors enhance resistance to ischemic and metabolic injuries in distant organs such as the brain and retina.
07:25
Predicting Amputation using Local Circulating Mononuclear Progenitor Cells in Angioplasty-treated Patients with Critical Limb Ischemia
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Cited by 3 •
2020
Lower limb amputation may occur even after angioplasty of obstructed vessels in Critical Limb Ischemia (CLI). Mononuclear Progenitor Cells (MPCs) reflect vascular repair. The present protocol describes the quantification of MPCs from circulation close to angioplasty, and its relationship with endothelial dysfunction and prediction of lower limb amputation.
14:03
Orthotopic Hind-Limb Transplantation in Rats
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Cited by 21 •
2010
Here we describe the orthotopic rat hind-limb transplantation procedure, which seems to be the gold standard in vivo model for composite tissue allotransplantation research.
07:15
Orthotopic Hind Limb Transplantation in the Mouse
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Cited by 24 •
2016
This novel model for orthotopic hind limb transplantation in the mouse, applying a non-suture cuff technique for super-microvascular anastomosis, provides a powerful tool for in vivo mechanistic immunological research related to vascularized composite allotransplantation (VCA).
01:21
Coronary Circulation
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2024
The heart, an organ critical to survival, gets nourishment not from the blood it pumps but from a separate circulation system known as coronary circulation. This is the shortest circulation in the body and is responsible for supplying the heart with the nutrients it needs to function effectively. Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...
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Blood reaches the legs through a branching arterial pathway that extends from the aorta to the iliac and femoral arteries and then into smaller vessels. Arteriolar resistance adjusts regional blood flow, allowing different tissues to receive an appropriate supply. This regulation supports tissue metabolism and contributes to temperature control within the legs and feet.
One-way venous valves help keep blood moving toward the heart rather than flowing backward. During movement, contracting calf muscles compress the veins and propel blood upward, a mechanism called the calf-muscle pump. Together, these features limit venous pooling and support effective return from the lower limbs, particularly during mobility.
Arterial mechanisms primarily deliver oxygenated blood and regulate its distribution through progressively smaller vessels, with arteriolar resistance controlling regional flow. Venous mechanisms return blood to the heart and depend on one-way valves and muscle-assisted compression. This functional distinction helps explain why assessment must consider both forward delivery and the efficiency of venous return.
Clinicians can assess lower limb circulation by examining peripheral pulses, observing capillary refill, and evaluating Doppler signals. These findings provide different indications of blood movement through the limb and its vessels. Used together, they support clinical assessment and can help identify abnormal perfusion or impaired circulation requiring further evaluation.
Circulatory assessment helps distinguish problems involving arterial delivery from those affecting venous return. Peripheral artery disease concerns the arterial side, whereas venous insufficiency concerns the return pathway and its ability to limit pooling. Reviewing pulses, capillary refill, and Doppler signals in the context of symptoms can help direct attention toward the relevant vascular problem.
The circulation of the legs is clinically important because disruption can threaten tissue function or impair blood return. Deep-vein thrombosis represents a venous concern, while threatened limb ischemia indicates critically compromised limb perfusion. Assessment findings such as pulses, capillary refill, and Doppler signals help identify circulation changes associated with these serious conditions.