Location of valves and competence of the great saphenous vein above the knee.
The exact location of the valves of the great saphenous vein and the ability of these valves to prevent centrifugal flow were studied in 20 human cadaveric legs. A valve was present at the saphenofemoral junction in 17/20 (85%) legs. The great saphenous vein above the knee had 4.2 +/- 1.5 (mean +/- SD) valves. In a length-standardised great saphenous vein which measured 100 units from the saphenofemoral junction to the knee joint line, the first, second, third, fourth and fifth valves were located at 7.5 +/- 3.6; 34.3 +/- 18.5; 61.0 +/- 20.9; 79.3 +/- 17.6; and 83.0 +/- 15.9 units from the junction respectively. 19/20 (95%) of the veins were competent at a centrifugal pressure of 161 +/- 7 cm of saline.
Pang
A S
AS
Department of Surgery, Alexandria Hospital, Singapore.
D000368:Aged; D000369:Aged, 80 and over; D001344:Autopsy; D005260:Female; D006801:Humans; D008297:Male; D008365:Manometry; D011312:Pressure; D012016:Reference Values; D012501:Saphenous Vein / Q000033:anatomy & histology* / Q000502:physiology; D014655:Vascular Resistance