Anatomical Variations of the Popliteal Artery and its Tibial Branches: Analysis in 1242 Extremities |
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Authors: | Sung-Won Kil Gyoo-Sik Jung |
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Institution: | (1) Department of Radiology, Dankook University College of Medicine, 16-5 Anseo-dong, Cheonan, Chungnam, 330-715, South Korea;(2) Department of Radiology, Kosin University College of Medicine, 34, Amnam-Dong, Seo-Gu, Busan, 602-702, South Korea |
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Abstract: | The purpose of this study was to analyze the variations in branching of the popliteal artery by reviewing femoral arteriograms.
Between 2004 and 2006, digital subtraction angiographies of both lower extremities were performed in 621 patients. We reviewed
these 1242 arteriograms retrospectively in order to analyze the branching pattern of the popliteal artery. Of the 1242 extremities,
1108 extremities (89.2%) had normal branching pattern of the popliteal artery. The remaining 134 extremities (10.8%; 65 right,
69 left) in 105 patients (66 men, 39 women; 76 unilateral, 29 bilateral) showed seven variant branching patterns: hypoplastic
or aplastic posterior tibial artery (PT) (n = 63, 5.1%); hypoplastic or aplastic anterior tibial artery (AT) (n = 21, 1.7%); trifurcation (n = 19, 1.5%); high origin of AT (n = 15, 1.2%); hypoplastic or aplastic PT and AT (n = 10, 0.8%); high origin of PT (n = 5, 0.4%); and anterior tibioperoneal trunk (n = 1, 0.1%). When the branching pattern of the popliteal artery is normal in one extremity, there is a 13% probability the
other side will be a variant pattern. When the branching pattern is variant in one extremity, there is a 28% probability the
opposite side will also contain a variation. Variations in branching of the popliteal artery are not uncommon. Awareness of
these variations is important for evaluation of the lower extremity arteriograms and has clinical implications for vascular
surgeons and interventional radiologists. |
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Keywords: | Extremities/angiography Popliteal artery Peroneal artery Tibial artery |
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