Factors predicting the diameter of the popliteal artery in healthy humans.
OBJECTIVE
To determine the relevance of popliteal dilatations, knowledge of the normal popliteal artery diameter is essential. This study investigates the diameter of the popliteal artery in healthy males and females.


METHODS
We measured the diameter of the popliteal artery in 121 healthy volunteers (59 males and 62 females), ages 8 to 81, with echo-tracking B-mode ultrasonography. We analyzed the influence of age, sex, height, weight, body surface area (BSA) and systolic blood pressure with a multiple regression model.


RESULTS
The popliteal artery increased steadily in diameter throughout life. From 25 years on, the diameter was larger in males than in females. If corrected for BSA, this difference decreased from 17% to 7%. This study found a correlation between popliteal artery diameter and BSA (r=0.47 and r=0.61, respectively, p < 0.0001). Age, followed by BSA, was the most influencing factor on popliteal diameter in both males and females (r=0.62 and r=0.66, respectively, p < 0.0001). We used age and BSA in creating a model for prediction of popliteal artery diameter.


CONCLUSIONS
The diameter of the popliteal artery increases with age, initially during growth, but also in adults. This is related to age, body size and sex, with males having larger arteries than females. It is now possible to predict the normal popliteal arterial diameter, and nomograms are presented for use in the study of aneurysmal arterial disease.
Department of Surgery, Lund University, Malmö University Hospital, Sweden.
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T
Sandgren
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Sonesson
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Ahlgren
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Länne
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001794:Blood Pressure / Q000502:physiology; D001827:Body Height / Q000502:physiology; D001830:Body Surface Area; D001835:Body Weight / Q000502:physiology; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011150:Popliteal Artery / Q000033:anatomy & histology* / Q000000981:diagnostic imaging / Q000502:physiology; D012016:Reference Values; D012044:Regression Analysis; D012737:Sex Factors; D014463:Ultrasonography; D014664:Vasodilation / Q000502:physiology