In This Guide

What Do Compression Stockings Do?

Compression stockings apply graduated external pressure to the leg — greatest at the ankle and progressively decreasing toward the knee or thigh — to improve venous return from the lower extremities. The compression assists the calf muscle pump in pushing blood upward against gravity, reduces venous pooling and leakage of fluid into surrounding tissue, and decreases the swelling, heaviness, and discomfort of venous insufficiency and other conditions that cause lower extremity edema.

At Balance Foot & Ankle, we prescribe compression stockings as part of the management of venous insufficiency, lymphedema, and chronic swelling, and we recommend them preventively for patients at risk for deep vein thrombosis during travel, after surgery, or due to their occupation. Understanding who benefits from compression, what compression level is appropriate, and how to use compression stockings correctly helps patients get the most benefit from these devices.

Who Benefits from Compression Stockings?

Venous Insufficiency

Chronic venous insufficiency — failure of the venous valves in the leg veins to prevent backflow — allows blood to pool in the leg veins during standing and walking. The resulting venous hypertension causes ankle swelling, skin discoloration, varicose veins, and ultimately venous ulcers. Graduated compression stockings are the cornerstone of conservative venous insufficiency management and are more effective than any available medication for reducing swelling and preventing ulceration when worn consistently.

Lymphedema

Lymphedema — swelling caused by failure of the lymphatic system to drain fluid from the interstitial space — requires specialized flat-knit compression garments rather than standard circular-knit compression stockings. Flat-knit garments provide stiffer, more consistent compression for the denser, fibrous swelling of lymphedema. Lymphedema compression garments should be prescribed and fitted by a certified lymphedema therapist after complete decongestive therapy.

Travel and Prolonged Sitting

Prolonged sitting during long flights, road trips, or extended work shifts reduces the calf muscle pump action that normally assists venous return. This venous stasis contributes to lower extremity swelling and increases the risk of deep vein thrombosis. Compression stockings at 15 to 20 mmHg worn from the start of travel significantly reduce both swelling and DVT risk. This compression level is available without a prescription and is appropriate for most travelers without underlying venous disease.

Occupational Edema

Workers who stand or walk for extended shifts — nurses, teachers, retail staff, factory workers, chefs — develop lower extremity edema from prolonged hydrostatic pressure in the veins. Compression stockings at 15 to 20 mmHg worn during work hours reduce this occupational swelling and the associated leg fatigue, heaviness, and discomfort that accumulate over a long shift.

Post-Surgical and Post-Injury Swelling

After foot and ankle surgery, controlled compression from graduated stockings or ankle compression wraps reduces postoperative swelling and supports wound healing. We provide specific compression recommendations for each post-surgical patient based on the type and extent of surgery, wound status, and return-to-weight-bearing timeline.

Compression Levels Explained

Compression is measured in millimeters of mercury (mmHg). The level appropriate for a specific indication depends on the severity of the condition being treated.

8 to 15 mmHg (mild compression) is appropriate for tired, achy legs from prolonged standing, mild daytime swelling, and varicose veins without edema. Available over-the-counter in most drug and sporting goods stores. 15 to 20 mmHg (moderate compression) is the standard travel compression level and is appropriate for mild venous insufficiency, occupational edema, and DVT prevention. Also available over-the-counter. 20 to 30 mmHg (firm compression) is the most commonly prescribed medical compression level for moderate to severe venous insufficiency, active venous ulcers, post-thrombotic syndrome, and moderate lymphedema. Requires prescription in most states and should be professionally fitted. 30 to 40 mmHg (extra-firm compression) is used for severe venous insufficiency, advanced post-thrombotic syndrome, and severe lymphedema. Always requires prescription and professional fitting.

Choosing and Caring for Compression Stockings

Professional measurement of ankle circumference, calf circumference, and leg length is recommended for any compression level above 20 mmHg to ensure proper fit. Ill-fitting compression stockings can create tourniquet effects at the ankle if the sizing is incorrect. Most insurance plans cover medically prescribed compression stockings for diagnosed venous insufficiency or lymphedema with appropriate documentation from the treating physician.

Compression stockings should be put on first thing in the morning before getting out of bed, when limb volume is at its smallest after overnight elevation. A donning aid or rubber gloves can make the application of firm compression stockings easier. Wash compression stockings daily in mild soap and warm water and allow to air dry — machine washing and drying rapidly degrades the elastic fibers. Most medical-grade compression stockings maintain their compression for 90 to 120 days with daily use before needing replacement.

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Best Compression Socks We Recommend

At Balance Foot & Ankle, these are the compression products we most frequently recommend to patients based on comfort, durability, and therapeutic effectiveness.

SB SOX Compression Socks (20-30 mmHg) — Our most-recommended everyday compression sock. The graduated compression improves circulation while the moisture-wicking fabric keeps feet dry throughout the day. Excellent for patients who stand or sit for extended periods at work. Check price on Amazon

CHARMKING Compression Socks (15-20 mmHg) — A lighter option for patients new to compression therapy or those who find 20-30 mmHg too tight. These come in multiple colors and patterns, making compliance easier for patients who are self-conscious about wearing medical stockings. Check price on Amazon

JOBST Relief Knee-High (30-40 mmHg) — For patients with significant venous insufficiency, lymphedema, or post-surgical swelling, medical-grade JOBST stockings provide the strongest OTC compression available. These require careful sizing and fitting for proper therapeutic effect. Check price on Amazon

The Most Common Compression Sock Mistake

The biggest mistake we see is patients buying the wrong size or compression level. Compression socks that are too loose provide no therapeutic benefit. Socks that are too tight can restrict blood flow and cause more harm than good. Always measure your calf circumference and ankle circumference before ordering, and start with the compression level your podiatrist recommends rather than guessing.

Frequently Asked Questions

How many hours a day should I wear compression socks?

Most patients should wear compression socks during all waking hours, putting them on first thing in the morning before swelling occurs and removing them before bed. Start with a few hours per day and gradually increase wear time. Some conditions may require 24-hour wear as directed by your physician.

What compression level do I need?

15-20 mmHg is suitable for mild swelling, tired legs, and travel. 20-30 mmHg is the most commonly prescribed level for moderate edema and varicose veins. 30-40 mmHg is medical-grade for severe edema, lymphedema, and venous ulcers. Always consult a podiatrist before using 30-40 mmHg compression.

Can diabetics wear compression socks?

Diabetic patients should consult their podiatrist before using compression stockings. While compression can help with diabetic-related swelling, patients with peripheral arterial disease or neuropathy may need special diabetic socks instead. Your podiatrist can determine whether compression therapy is safe based on your vascular status.

The Bottom Line

Compression socks are one of the most effective and underutilized tools for managing lower leg and foot swelling, varicose veins, and post-surgical recovery. At Balance Foot & Ankle, we recommend starting with a quality 20-30 mmHg graduated compression sock for most patients and adjusting based on response. Proper sizing is essential for effectiveness and comfort, so take measurements before purchasing and consult a podiatrist if you are unsure about the right compression level for your condition.

Your Board-Certified Podiatrists

Dr. Tom Biernacki, DPM

Board-Certified · FACFAS

Dr. Carl Jay, DPM

Board-Certified Podiatrist

Dr. Daria Gutkin, DPM

Podiatrist

Dr. Tom Biernacki, DPM

Dr. Tom Biernacki, DPM is a double board-certified podiatrist and foot & ankle surgeon at Balance Foot & Ankle Specialists in Southeast Michigan. With over a decade of clinical experience, he specializes in heel pain, bunions, diabetic foot care, sports injuries, and minimally invasive surgery. Dr. Biernacki is a member of the APMA and ACFAS, and his patient education content on MichiganFootDoctors.com and YouTube has reached over one million views.