Posterior Tibial Vein: Location, Function, Conditions and Testing
Updated: 2 days ago
Medically reviewed by Dr. Baraa Alnahhal, MD · Last reviewed: October 2026
Quick Answer: What is the posterior tibial vein?
The posterior tibial veins are deep veins in the lower legs that collect blood from the calf, ankle and sole of the foot and carry it back toward the heart, joining the anterior tibial vein to form the popliteal vein. They can be affected by blood clots, deep vein thrombosis and venous insufficiency, evaluated with duplex ultrasound or a venogram. [1]
What the research says
Clots in the main (axial) calf veins carried more risk than clots in the calf muscle veins. In a meta-analysis of 13 studies with 4,889 patients with isolated calf-vein thrombosis, axial calf-vein involvement was linked to more proximal propagation (RR 1.63, 95% CI 1.10–2.41) and pulmonary embolism (RR 2.79, 95% CI 1.31–5.95) and a borderline higher rate of recurrent venous thromboembolism (RR 1.23, 95% CI 1.00–1.53) than muscular calf-vein thrombosis, with similar major-bleeding rates. The axial calf veins are the anterior tibial, posterior tibial and peroneal veins (Wang et al., Journal of Vascular Surgery: Venous and Lymphatic Disorders, 2024). [2]
Isolated calf-vein clots are common, but the best treatment is still debated. A review reports that isolated distal deep vein thromboses account for up to 50% of leg DVTs, that meta-analyses tend to support anticoagulant treatment, and that the optimal dose and duration are not yet defined, so decisions should weigh each person’s risk of clot extension, recurrence and bleeding (Elmi et al., Vasa, 2020). [3]
What are the posterior tibial veins?
The posterior tibial veins are blood vessels in the lower legs. They collect blood from the calves, ankles and soles of the feet and carry it back to the heart. [1]
Each leg usually has a pair of posterior tibial veins that run alongside the posterior tibial artery. They are deep calf veins.
What does the posterior tibial vein do?
The posterior tibial vein collects blood from the lower leg and carries it back to the heart. This is part of the normal circulatory process that returns oxygen-poor blood to the heart so it can travel to the lungs. [1]
In the lungs, carbon dioxide leaves the blood and oxygen is added. The heart then sends the oxygen-rich blood through arteries to tissues and organs throughout the body. [1]
Circulation step | What happens |
Blood leaves the heart | Arteries carry oxygen-rich blood to tissues and organs |
Tissues exchange gases | Blood gives up oxygen and picks up carbon dioxide |
Veins collect blood | Veins carry oxygen-poor blood back toward the heart |
Lungs refresh the blood | Carbon dioxide is exchanged for oxygen |
The cycle continues | Oxygen-rich blood returns to the body through arteries |
Where is the posterior tibial vein located?
Each posterior tibial vein begins around the ankle joint and runs upward along the inside of the calf. It ends just below the knee. [1]
When it reaches the popliteus muscle, the posterior tibial vein joins the anterior tibial vein. The popliteus is a stabilizing muscle deep in the knee joint. Together, the posterior and anterior tibial veins form the popliteal vein. [1]
Location | Posterior tibial vein anatomy |
Starting point | Around the ankle joint |
Course | Up the inside of the calf |
Ending point | Just below the knee |
Connection near the knee | Joins the anterior tibial vein near the popliteus muscle |
Resulting vessel | The joined veins form the popliteal vein |
What are the three deep veins below the knee?
Below the knee, three groups of deep veins run near one another. All collect blood from the calves, ankles and parts of the feet. [1]
Deep vein group | Area it drains | General course |
Anterior tibial veins | Top of the foot, also called the dorsum | Along the outside of the calf |
Posterior tibial veins | Sole of the foot | Along the inside of the calf |
Peroneal (fibular) veins | Outer side of the foot | Through the middle of the calf |
These deep veins support the return of blood from the lower leg. A problem in one vein can affect local blood flow, but an individual symptom does not identify which vein is involved.
How does the posterior tibial vein connect with the popliteal vein?
The posterior tibial vein travels up the inner calf and ends below the knee. Near the popliteus muscle, it joins the anterior tibial vein. [1]
Their union forms the popliteal vein, which continues the pathway of venous blood through the back of the knee. This connection helps explain why an evaluation may consider the lower-leg veins and the vessels behind the knee together. [1]
What conditions can affect the posterior tibial veins?
Deep vein thrombosis and chronic venous insufficiency are among the conditions that can affect blood flow through the posterior tibial veins and other deep leg veins. [1]
Condition | What it means |
Blood clot | Coagulated blood blocks or narrows blood flow |
Deep vein thrombosis | A blood clot forms in a deep vein, such as a posterior tibial vein |
Chronic venous insufficiency | Leaky valves make it harder for leg veins to carry blood back to the heart, allowing blood to pool in the lower legs |
Varicose veins | Twisted, bulging veins associated with damaged or weak vein walls |
Deep vein thrombosis and posterior tibial veins
Deep vein thrombosis, often called DVT, is a blood clot in a deep vein. A posterior tibial vein can be one of the affected deep veins. [1]
Possible warning signs of a clotting problem can overlap with other conditions. New one-sided leg swelling, calf pain, warmth or skin-color change deserves prompt medical assessment, especially when symptoms are sudden or worsening. These signs do not prove DVT, and an article cannot determine the cause.
Chronic venous insufficiency
Chronic venous insufficiency occurs when leg veins have difficulty carrying blood back to the heart. Leaky valves can allow blood to pool in the lower legs. [1]
Evaluation helps distinguish venous insufficiency from other reasons for leg discomfort, swelling or visible veins. Treatment is based on the underlying problem and professional assessment.
Varicose veins
Varicose veins are twisted, bulging veins that can develop when vein walls are damaged or weak. They are different from the deep posterior tibial veins, although both involve the venous circulation of the leg. [1]
A healthcare professional can explain whether visible veins, leg symptoms or an imaging finding needs further evaluation.
What symptoms need prompt or emergency evaluation?
A new swollen, painful, warm or discolored leg can have several causes, including problems that need prompt evaluation. Contact a healthcare professional promptly when these changes are new, one-sided, persistent or worsening.
Seek emergency help for chest pain, sudden shortness of breath, coughing blood, fainting, severe weakness or rapidly worsening illness. These signs can have different causes, but they may indicate a serious problem affecting the heart, lungs or circulation.
Do not massage a painful or swollen leg while waiting to determine the cause, and do not delay urgent care to try a home remedy. Symptoms alone cannot confirm a clot.
How are posterior tibial veins tested?
Clinicians may use specialized tests to assess the health and blood flow of the posterior tibial veins. [1]
Test | What it does |
Duplex ultrasound | Uses high-frequency sound waves to evaluate blood flow through the leg veins and arteries |
Venogram | Uses injected contrast material and X-rays to view blood flow through the veins |
Duplex ultrasound is noninvasive. A venogram is an imaging procedure that involves contrast material. The appropriate test depends on the clinical question, symptoms, examination and medical history.
A test result should be interpreted by a healthcare professional. The location of a clot, the condition of a vein and the next step in care cannot be determined from a general article.
How are conditions affecting the posterior tibial veins treated?
Treatment depends on the condition, the location and extent of the problem, the person’s overall health and the test results. Options may include noninvasive measures, medicines, procedures or surgery. [1]
Treatment category | Examples described in clinical care |
Compression | Compression stockings that gently squeeze the legs to improve blood flow |
Medicines | Anticoagulants to help prevent clots or diuretics to remove excess fluid |
Minimally invasive vein treatment | Ambulatory phlebectomy, catheter-directed thrombolytic therapy, laser therapy or sclerotherapy |
Surgery | Removing or repairing damaged veins, rerouting blood flow or transplanting a healthy vein |
Not every treatment is appropriate for every condition. Do not start, stop or change anticoagulants, diuretics or compression therapy without professional guidance. [1]
What simple habits support lower-leg vein health?
General guidance for supporting leg-vein and circulatory health includes avoiding crossed legs while seated, elevating the legs, exercising regularly and wearing compression stockings during long periods of standing or sitting.
These are general measures, not a personalized treatment plan. A healthcare professional can help determine whether a specific activity or compression garment is appropriate for an individual’s health history.
General measure | Practical explanation |
Avoid crossing the legs while seated | Reduces prolonged compression from a crossed-leg position |
Elevate the legs | May help blood flow return toward the heart |
Exercise regularly | Supports movement and circulation |
Use compression during long sitting or standing | May support blood flow when recommended for the individual |
What questions should you ask a professional about your posterior tibial vein?
Useful questions include whether the posterior tibial vein is involved, which tests such as duplex ultrasound are needed, whether compression stockings fit you and which symptoms need emergency care.
Could my leg symptoms involve a deep vein, a superficial vein, a muscle or another structure?
Is the posterior tibial vein involved, or is another vessel affected?
Would duplex ultrasound answer the clinical question?
Is a venogram needed, and what would it show?
Could a clotting problem, chronic venous insufficiency or varicose vein explain the finding?
Are compression stockings appropriate for me?
What should I know about any anticoagulant or diuretic that is prescribed?
Which symptoms should prompt emergency care?
When should I return for follow-up?
Conclusion
The posterior tibial veins are deep calf veins that collect blood from the soles of the feet, ankles and calves and carry it back toward the heart. Each vein begins near the ankle, runs up the inside of the calf and joins the anterior tibial vein near the popliteus muscle to form the popliteal vein. [1]
Blood clots, DVT, chronic venous insufficiency and varicose veins can affect lower-leg venous circulation. Duplex ultrasound and venography can help clinicians evaluate blood flow, while treatment may include compression, medicines, procedures or surgery depending on the underlying problem. [1]
Want a clearer next step for lower-leg circulation questions? Read more health articles before speaking with a healthcare professional. [1]
Frequently Asked Questions
What is the posterior tibial vein?
The posterior tibial vein is a deep vein in the lower leg. It collects blood from the calf, ankle and sole of the foot and carries it back toward the heart.
Are there two posterior tibial veins?
Each leg usually has two posterior tibial veins, a pair that runs alongside the posterior tibial artery.
Where does the posterior tibial vein run?
The posterior tibial vein begins around the ankle joint, travels up the inside of the calf and ends just below the knee.
What does the posterior tibial vein become near the knee?
Near the popliteus muscle, the posterior tibial vein joins the anterior tibial vein. Together they form the popliteal vein.
Is the posterior tibial vein a deep vein?
Yes. The posterior tibial veins are deep calf veins.
Can a posterior tibial vein have a blood clot?
Yes. A blood clot can form in a deep vein such as a posterior tibial vein. This is a form of deep vein thrombosis, but symptoms alone cannot confirm a clot.
How is the posterior tibial vein checked?
Duplex ultrasound can evaluate blood flow through the leg veins and arteries. A venogram uses injected contrast material and X-rays to show blood flow through veins.
How are posterior tibial vein problems treated?
Treatment depends on the underlying condition. It may include compression stockings, medicines, minimally invasive procedures, laser therapy, sclerotherapy or surgery.
Can exercise support lower-leg vein health?
Regular exercise is included in general guidance for supporting leg-vein and circulatory health. The safest activity plan depends on the person’s condition and should be discussed with a healthcare professional when symptoms or a diagnosed problem are present.
When is a leg-vein concern an emergency?
Chest pain, sudden shortness of breath, coughing blood, fainting, severe weakness or rapidly worsening illness needs emergency medical assessment. A new swollen, painful, warm or discolored leg also deserves prompt evaluation.
Related Reading
Deep Vein Thrombosis (DVT): Symptoms, Causes, Diagnosis & Treatment — Complete Guide explains blood clots in deep leg veins and how they are treated.
Chronic Venous Insufficiency (CVI): What It Is, Why It Happens, and How It Gets Treated covers leg veins that struggle to return blood to the heart.
What Are Varicose Veins? A Plain-Language Guide to the Bulging, Twisted Veins That Most Often Show Up on the Legs explains why veins become enlarged and twisted and what helps.
D-dimer Test: What It Is, Why It's Done, How It Works and What Results Mean explains the blood test used to help rule out blood clots.
References
Cleveland Clinic. What Are Your Posterior Tibial Veins? Cleveland Clinic. Last updated July 29, 2022. https://my.clevelandclinic.org/health/body/23917-posterior-tibial-vein
Wang C, Shi C, Guo R, et al. Comparison of clinical outcomes among patients with isolated axial vs muscular calf vein thrombosis: a systematic review and meta-analysis. J Vasc Surg Venous Lymphat Disord. 2024;12(2):101727. PMID 38043681. https://doi.org/10.1016/j.jvsv.2023.101727
Elmi G, Rinaldi ER, Domanico A, et al. Calf deep vein thrombosis: clinical relevance, diagnostic approaches and therapeutic options. Vasa. 2020;49(5):359-366. PMID 32364430. https://doi.org/10.1024/0301-1526/a000869
National Heart, Lung, and Blood Institute. What Is Venous Thromboembolism? NHLBI. Last updated September 19, 2022. https://www.nhlbi.nih.gov/health/venous-thromboembolism
National Heart, Lung, and Blood Institute. How Blood Flows through the Heart. NHLBI. Last updated June 25, 2025. https://www.nhlbi.nih.gov/health/heart/blood-flow
Disclaimer
This article is for general educational purposes and is not a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition.
It explains posterior tibial vein location, function, deep-vein anatomy below the knee, the connection with the popliteal vein, common conditions, testing, treatment categories, urgent warning signs and general care measures. It does not diagnose a clot, interpret an ultrasound or replace medical care, and no single symptom identifies DVT, venous insufficiency or another specific condition.
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