Clinical Anatomy of Vessels of Popliteal Region

Abstract

INTRODUCTION: A modern standard for noninvasive diagnostics of the vascular system is duplex scanning. The knowledge of variability of vascular anatomy is essential for ultrasound doctors.

AIM: To clarify variants of the clinical anatomy of vessels of the popliteal region using duplex scanning and anatomical preparation.

MATERIALS AND METHODS: The work used data of duplex scanning of the arteries and veins of the lower extremities of patients without pathology of the vascular system of the lower extremities, who underwent examination of the vascular system: 200 patients aged from 18 to 92 years. As control, the data of anatomical preparation of 50 amputated lower extremities were taken, with preliminary filling the venous system with a blue synthetic gel.

RESULTS: In the course of anatomical preparation, two trunks of the popliteal vein were identified in the distal popliteal region in 86.0% of observations. A typical drain of the small saphenous vein with formation of the saphenopopliteal junction was encountered in 60.0% of cases. In duplex scanning, a high bifurcation of the popliteal artery was detected in 1.9% of observations. The two trunks of the popliteal vein in the distal part of the popliteal region were encountered in 82.4% of cases, and the medial trunk was almost always larger than the lateral one. The small saphenous vein drained into the popliteal vein in 63.0% of cases. In 7.2% of observations, it drained into one of the intramuscular veins. In 0.95% of observations, a perforator vein was identified in the popliteal region. The sural veins were identified in all the patients — two on the medial and lateral surface positioned at the sides of the two trunks of the sural arteries, forming a single trunk before confluence with the popliteal vein.

CONCLUSIONS: TThe study revealed the following anatomic variants of vessels of the popliteal region: two trunks of the popliteal vein below the knee joint cleft in 85.7% to 86.0% of observations; a high bifurcation of the popliteal artery in 1.9%; saphenopopliteal junction in 60.0% to 63.0%; perforator veins of the popliteal region in 0.95% of observations; upon that, the small saphenous vein does not form the saphenopopliteal junction.

Keywords

variant anatomy / popliteal vein / popliteal artery / saphenopopliteal junction / perforator vein

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