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Popliteal vein entrapment in the normal population

Leon, M., Volteas, N., Labropoulos, N., Hajj, H., Kalodiki, E., Fisher, C., Chan, P., Belcaro, G., Nicolaides, A.N. (1992) Popliteal vein entrapment in the normal population. European Journal of Vascular Surgery, 6 (6). pp. 623-627. ISSN 0950-821X. (doi:10.1016/S0950-821X(05)80839-4) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided) (KAR id:78360)

The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided.
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The aim of this study was to determine the incidence and severity of popliteal vein compression by full knee extension in the normal population. The popliteal veins in 100 healthy volunteers (200 limbs) with no history of previous deep vein thrombosis (DVT) or venous obstruction were examined using duplex scanning with the knee slightly flexed and then fully extended. Knee extension produced complete obstruction in 17 subjects and severe obstruction (<50% decrease in diameter) in a further 10 subjects. Thirteen subjects had unilateral compression and 14 bilateral. The 27 subjects were tested for functional venous outflow obstruction with air plethysmography. In flexion, the outflow fraction was normal (>40%) in all subjects. With the knee fully extended, severe or complete venous obstruction (outflow fraction <10%) was found in eight subjects. Moderate obstruction (outflow fraction 10-40%) was found in all the remaining 19 subjects. When digital compression of the long saphenous vein was performed, these subjects also demonstrated severe outflow obstruction. Although the incidence of symptoms of functional venous obstruction is rare in the general population, these findings have important implications for venous stasis for patients on the operating table and in those having prolonged bed rest. Studies investigating the association between popliteal vein compression and postoperative deep venous thrombosis are needed.

Item Type: Article
DOI/Identification number: 10.1016/S0950-821X(05)80839-4
Uncontrolled keywords: Air plethysmography, Duplex, Entrapment, Popliteal vein, adult, article, bed rest, compression, echography, human, incidence, knee, major clinical study, plethysmography, popliteal vein, saphenous vein, symptom, vein blood flow, vein occlusion, venous stasis, Adult, Constriction, Pathologic, Cross-Sectional Studies, England, Female, Human, Incidence, Male, Muscle Contraction, Plethysmography, Popliteal Vein, Thrombosis, Transducers, Pressure, Ultrasonography
Divisions: Divisions > Division of Natural Sciences > Kent and Medway Medical School
Depositing User: Philip Chan
Date Deposited: 08 Nov 2019 09:43 UTC
Last Modified: 25 Nov 2021 16:56 UTC
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