Venous system of the lower limbs - images.medi.de · Function of the venous valves – in health...
Transcript of Venous system of the lower limbs - images.medi.de · Function of the venous valves – in health...
Venous system of the lower limbs
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A: Superfi cial venous system
Main veins 1 Great saphenous vein (Vena saphena magna) 2 Small saphenous vein (Vena saphena parva)
Lateral tributaries 3 Superfi cial epigastric vein (Vena epigastrica superficialis) 4 Superfi cial circumfl exiliac vein (Vena circumflexailiaca superficialis) 5 Posterior accessory saphenous vein (Vena saphena accessoria posterior) 6 Anterior accessory saphenous vein (Vena saphena accessoria anterior) 7 External pudendal vein (Vena pudenda externa) 8 Posterior arcuate vein (Vena arcuata cruris posterior) 9 Anterior arcuate vein (Vena arcuata cruris anterior) 10 Posterior femoral vein (Vena femoro posterior (Giacomini))
11 Saphenofemoral junction (“Magna-Krosse”) 12 Saphenopopliteal junction (“Parva-Krosse”)
B: Communicating veins 13 Important perforator veins 13a Dodd 13b Hunter 13c Boyd 13d Sherman (24 cm perforator) 13e Cockett 13f May 13g Bassi
C: Deep venous system
14 Anterior tibial vein (Venae tibiales anteriores) 15 Posterior tibial vein (Venae tibiales posteriores) 16 Fibular vein (Venae fibulares) 17 Popliteal vein (Vena poplitea) 18 Femoral vein (Vena femoralis) 19 Deep femoral vein (Vena profunda femoris)
Function of the venous valves – in health
These clots can block the veins and prevent the venous return. The fi rst signs of thrombosis are swelling of the calf, pain and a feeling of heaviness.
Function of the venous valves – in venous disease
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Superfi cial venous system Deep venous system
The positive effects of a compression stocking
How a thrombosis occurs
A medical compression garment helps to approximate defective venous valves, thereby improving the venous return and lowering venous hypertension.
Irregular blood fl ow allows the formation of blood clots on the vessel wall.