TED hose are medical stockings designed to prevent blood clots in people who are bedridden or have limited mobility. The name stands for “thromboembolic deterrent,” referring to their primary job: stopping dangerous clots from forming in the leg veins. They’re most commonly used in hospitals after surgery, but they can also be prescribed for recovery at home.
How TED Hose Work
When you’re lying in bed for extended periods, blood naturally pools in your lower legs, especially in the calves. This pooling creates ideal conditions for a clot to form in the deep veins, a condition called deep vein thrombosis (DVT). TED hose apply gentle, graduated pressure to the legs, meaning the compression is tightest at the ankle and gradually loosens as it moves up. This pressure pattern pushes blood back toward the heart, mimicking the pumping action your calf muscles normally provide when you walk.
The stockings also compress the surface veins in your legs, narrowing them slightly. This helps the valves inside those veins close properly, preventing blood from flowing backward and pooling. The overall effect is steadier, more efficient blood circulation even when you’re not moving.
TED Hose vs. Compression Socks
People often assume TED hose and compression socks are the same thing. They look similar and both apply pressure to the legs, but they’re designed for different situations and different patients.
TED hose are prescribed for non-ambulatory patients, meaning people who aren’t up and walking around. Think post-surgical recovery, extended bed rest, or hospitalization for serious illness. They provide relatively light compression, typically in the 8 to 18 mmHg range, because the patient is lying down and gravity isn’t pulling blood downward as aggressively.
Compression socks, on the other hand, are built for people who are mobile. They treat ongoing circulatory problems like varicose veins, chronic swelling (lymphedema), and venous insufficiency. They come in higher pressure ratings, commonly 20 to 30 mmHg or 30 to 40 mmHg, because they need to counteract gravity while you’re standing or sitting upright. Compression socks are also used during pregnancy, for long flights, and by people who stand for extended periods at work.
When TED Hose Are Prescribed
Hospitals routinely use TED hose for patients undergoing major surgery, especially operations that take a long time or significantly limit mobility afterward. Hip and knee replacement patients, for example, typically wear them for up to six weeks following surgery. They’re also common after abdominal surgery, spinal procedures, and any situation where a patient will be bedridden for days or longer.
Beyond surgery, TED hose may be prescribed for patients whose mobility is greatly reduced by illness, or for those on certain medications that increase clotting risk. Your medical history plays a role too. If you’ve had a previous DVT or have other risk factors, you’re more likely to be fitted with a pair.
How Effective They Are
The evidence for compression in preventing blood clots is strong. In studies of airline passengers on flights longer than five hours (a situation that mimics the immobility of bed rest), compression stockings reduced the rate of asymptomatic DVT by roughly 90%. For high-risk passengers, the incidence dropped from about 3% to 0.3%. For low-risk passengers, it went from 1% to 0.1%. Hospital settings combine TED hose with other preventive measures like blood-thinning medications, so the stockings are typically one part of a broader clot-prevention strategy rather than the sole line of defense.
Who Should Not Wear Them
TED hose are not safe for everyone. The most important contraindication is compromised blood flow to the legs, particularly peripheral artery disease. If the arteries supplying your lower legs are already narrowed or blocked, adding external compression can reduce blood flow further and cause serious harm. Skin conditions on the legs, open wounds, and recent skin grafts are also reasons to avoid them. Your care team will check your circulation before prescribing TED hose, often by measuring blood pressure at the ankle compared to the arm.
Getting the Right Fit
TED hose only work properly if they fit correctly. Too loose, and they won’t provide enough compression. Too tight, and they can restrict blood flow or bunch up behind the knee, which actually increases clot risk.
For knee-length stockings, two measurements are needed: calf circumference at the widest point and leg length from about one inch below the knee to the bottom of the heel. For thigh-length stockings, you’ll need three: upper thigh circumference at the widest point, calf circumference at the widest point, and the distance from the crease of the buttock down to the heel. In hospitals, a nurse typically takes these measurements and selects the correct size from a chart specific to the stocking brand.
Putting Them On
Getting TED hose on can be surprisingly difficult, especially thigh-length versions. The fabric is designed to grip the skin and maintain compression, which means it resists sliding. The easiest approach is to turn the stocking inside out down to the heel, slip your foot in, and then gradually roll the fabric up the leg, smoothing out wrinkles as you go. Rubber gloves or textured grip gloves make a noticeable difference because they help you grab and pull the fabric without it slipping through your fingers.
If you’re recovering at home and struggling to get them on independently, donning aids are available. These are frame-like devices that hold the stocking open so you can slide your foot in and then pull the fabric up with handles. A medical supply store or your care team can recommend one that works with your specific stocking type. It’s worth the effort to get them on smoothly, because bunched or wrinkled fabric creates pressure points that defeat the purpose of the graduated compression design.
How Long to Wear Them
In a hospital setting, TED hose are typically worn around the clock, removed only briefly for skin checks and washing. After discharge, your care team will give you a specific timeline. Following hip or knee surgery, six weeks of daily wear is standard. For other surgeries, the duration is shorter and depends on how quickly you return to normal activity levels. Once you’re walking regularly and no longer spending most of the day in bed, TED hose have done their job and you’ll transition off them.