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Lateral calcaneal veins

The lateral calcaneal vein is a small but clinically important superficial vein located along the lateral aspect of the heel. It drains the lateral and posterior regions of the calcaneus (heel) and adjacent soft tissues. This vein plays a vital role in venous return from the heel, connecting the plantar venous plexus, lateral marginal vein, and small saphenous vein.

The lateral calcaneal vein serves as a link between superficial and deep venous systems, contributing to drainage during standing and walking. It can be involved in venous insufficiency, thrombophlebitis, or become dilated in cases of chronic venous hypertension or varicosity of the foot.

Synonyms

  • Lateral heel vein

  • Superficial calcaneal vein

Origin, Course, and Termination

  • Origin: Arises from the lateral plantar venous plexus and subcutaneous venous network near the lateral aspect of the heel.

  • Course: Ascends posterior and slightly superior to the lateral surface of the calcaneus, accompanying the lateral calcaneal branch of the small saphenous vein and superficial branches of the sural nerve.

  • Termination: Drains into the small saphenous vein or communicates with the fibular (peroneal) veins via perforating venules in the distal calf.

Relations

  • Anteriorly: Calcaneus and peroneal tendons (fibularis longus and brevis)

  • Posteriorly: Subcutaneous fat and heel skin

  • Medially: Plantar venous plexus and calcaneal branches of the posterior tibial veins

  • Laterally: Sural nerve and small saphenous vein

Function

  • Venous drainage: Drains the lateral and posterior heel region

  • Collateral pathway: Provides communication between plantar and small saphenous venous systems

  • Pressure regulation: Helps equalize venous pressure in the heel and lateral foot

  • Clinical importance: May serve as a visible collateral in cases of chronic venous obstruction

Arterial Relations

  • Accompanies the lateral calcaneal artery, a branch of the peroneal artery

Venous Drainage Pattern

  • Drains into the small saphenous vein

  • Communicates with fibular veins via perforators

  • Connects inferiorly with the plantar venous plexus

Clinical Significance

  • Varicosities: May become prominent in chronic venous insufficiency or standing occupations

  • Thrombophlebitis: Can occur due to trauma or infection in the heel region

  • Venous reflux: Retrograde flow may be observed in cases of small saphenous vein incompetence

  • Imaging relevance: MRV and CTV are valuable for evaluating venous patency, thrombosis, and collateral formation

MRI Appearance

  • T1-weighted images:

    • Normal vein: intermediate signal with low-signal lumen due to flowing blood

    • Slow flow: May appear bright due to flow-related enhancement

    • Thrombus: intermediate to high signal depending on stage

    • Perivenous fat: bright, outlining the vessel clearly

  • T2-weighted images:

    • Normal vein: intermediate-to-low signal lumen

    • Slow flow or stasis: Appears bright

    • Acute thrombus: bright signal; chronic thrombus: low signal (fibrotic)

  • STIR:

    • Vein normally low to intermediate signal

    • Edema or thrombophlebitis: Hyperintense signal in surrounding tissues

    • Slow flow: Appears bright due to stagnant blood

  • Proton Density Fat-Saturated (PD FS):

    • Normal: dark, sharply defined circular lumen

    • Slow venous flow: Hyperintense

    • Thrombosed vein: bright signal with wall thickening

  • T1 Fat-Saturated (T1 FS):

    • Normal vein: intermediate signal lumen, smooth thin wall

    • Slow flow: Bright linear signal in lumen (flow enhancement)

    • Thrombus: Intermediate to bright filling signal

    • Surrounding fat and soft tissues: high contrast delineation

    • Post-contrast: Homogeneous enhancement of lumen; filling defect indicates thrombus

  • T1 Fat-Sat Post-Contrast (Axial):

    • Normal: uniform enhancement of the venous lumen

    • Thrombus: Non-enhancing central filling defect

    • Inflammation: Venous wall and perivascular enhancement

MR Venography (MRV) – Contrast Enhanced

  • Technique: Gadolinium-enhanced 3D MRV with high-resolution ankle sequences

  • Normal: Thin, enhancing venous channel along lateral heel

  • Thrombosis: Filling defect or absent enhancement

  • Collateral veins: Enhanced visualization in chronic reflux or obstruction

  • Useful for mapping superficial-to-deep venous connections near the heel

CT Appearance

Non-Contrast CT:

  • Vein seen as small soft-tissue density near lateral calcaneal border

  • Indirect signs: perivenous fat stranding or edema in thrombophlebitis

  • Chronic thrombus may calcify, appearing as linear hyperdense focus

Post-Contrast CT (CT Venography – CTV):

  • Normal: Opacified thin vein running along lateral heel margin

  • Thrombus: Appears as a non-opacified intraluminal defect

  • Venous wall enhancement: Seen in phlebitis or local inflammation

  • Surrounding fat: clear low-density halo delineating the vein

MRI image

Lateral Calcaneal Vein AXIAL cross sectional anatomy 3T MRI AI enhanced radiology image-img-00000-00000

MRI image

Lateral Calcaneal Vein AXIAL cross sectional anatomy 3T MRI AI enhanced radiology image-img-00000-00000_00001

MRI image

Lateral Calcaneal Vein SAG cross sectional anatomy 3T MRI AI enhanced radiology image-img-00000-00000