Life in a Total Contact Cast: What the First Weeks Are Like

If we have suggested a total contact cast, your first questions are probably practical ones: showers, sleep, driving and how long it lasts. This article walks through the first weeks, with what the research shows. Our page on total contact casting explains how the cast works and who it suits; this is the everyday side of it.

Why the cast has to stay on

A removable boot only protects an ulcer while it is on, and people take boots off more often than they realize. When researchers hid a step counter inside removable walkers, the walkers turned out to be worn for just 28% of the steps people took each day.⁠^[5] A total contact cast takes that choice away, so it protects the ulcer even on the night-time walk to the bathroom.

That is why the international offloading guideline puts a non-removable knee-high device first for these ulcers: in its review, much better adherence is what lets more ulcers heal.⁠^[1] In an early controlled trial, 19 of 21 ulcers healed in a cast versus 6 of 19 with dressings and footwear, and fewer became infected.⁠^[2]

Casting day

The visit starts like any other wound care visit. We clean and trim the ulcer, measure it and dress it. Then we make sure a cast is safe for this wound: heavy drainage, a moderate infection or moderately reduced blood flow call for a removable device instead, so the wound can be checked more often.⁠^[1] We check your circulation first, with noninvasive testing at our practice (see circulation tests for foot wounds).

The cast itself is a minimally padded shell of plaster or fiberglass, molded by hand so it keeps contact with the whole sole and lower leg, often with an attachable sole for walking. That hand-molding spreads pressure over the foot instead of concentrating it on the ulcer.⁠^[1] We fit the device and show you how to get around safely before you leave. Bring someone to drive you home.

Swipe sideways to see the whole drawing.

The first weeks, step by step

The first few days. The cast feels heavy, and the leg wearing it is effectively longer than the other. If swelling goes down, a cast that was snug can start to feel loose, and casts sometimes need replacing for exactly that reason.⁠^[6] Tell us if yours feels loose or starts to shift.

Each cast change. In a large series of 398 casts, the first one was changed within a week by protocol, casts stayed on for 7.7 days on average, and people needed between five and six casts each, on average.⁠^[4] At every change, we look over the skin of the whole foot and leg, clean and re-measure the ulcer, and put on a fresh cast. Keep every appointment: the cast depends on careful application and close follow-up.⁠^[2]

Around week four. In a study of 203 people seen weekly, ulcers that shrank by more than the median amount over four weeks went on to heal by 12 weeks in 58% of cases, compared with 9% of those that shrank less. The authors called it a decision point for spotting ulcers that need more than standard care.⁠^[7] If yours is lagging, we look for the reason: hidden infection, limited blood flow, or a bone or tendon pressing on the same spot.

How long it lasts. In the trials, ulcers that healed in a cast took about 41 to 42 days on average.⁠^[2,3] A cast for an active Charcot foot is a longer commitment, since it usually takes several months of offloading before the signs of activity settle and the fractures heal.⁠^[8] See whether a Charcot foot can be rebuilt.

Getting around safely

Walk less than you usually would. In the 1989 trial, people in a cast were asked to keep their walking to about a third of their usual activity.⁠^[2] In a later trial, people in a cast averaged about 600 steps a day.⁠^[9] Taking fewer steps may itself help an ulcer heal.⁠^[1]

Use a walking aid if you feel unsteady. The guideline suggests one when the device makes you less stable and your risk of falling is high.⁠^[1] Weeks in a knee-high device can also bring muscle weakness, falls, and knee or hip complaints from the uneven leg length.⁠^[8]

Even out your legs. The international offloading and Charcot guidelines both suggest considering a lift on the shoe of your other foot to make up for the cast’s thick sole.⁠^[1,8] In a randomized trial of 42 people with ulcers on the sole, adding that lift improved comfort and hip pain and was linked with fewer new ulcers on the other foot.⁠^[10] Your other foot is doing extra work for a while, so look it over every day.

Showers, sleep, work and driving

Showers. Keep the cast dry. Use two layers of plastic or a waterproof cast cover, and don’t soak the cast in a bath or pool or hold it under running water, even when it is covered.⁠^[6]

Itching and the edges. Don’t push anything inside the cast to scratch, pull out the padding or trim the edges yourself; call us instead.⁠^[6]

Sleep. The cast stays on at night; that is part of how it works. A pillow under the calf can make lying down more comfortable.

Work. If your job can’t accommodate a cast, tell us. The guideline lists a removable knee-high or ankle-high device as the second choice when someone’s circumstances, including their work, don’t allow a non-removable one.⁠^[1]

Driving. Ask us before you drive. In a driving-simulator study of 23 healthy drivers, a below-knee plaster cast on the right leg made emergency braking significantly slower.⁠^[11] On a closed test track with 14 healthy volunteers, the delay from a walking cast was small, but the authors still urged caution.⁠^[12] Neither study included people with numb feet. Plan on rides for these weeks.

When to call us between visits

New sores are the problem to watch for. In the 398-cast series, 5.5% of casts led to a new sore and 30% of people had at least one; all but one healed within three weeks.⁠^[4] At another center, 23% of patients over eight years had a complication, most often a new heel ulcer, and 92.1% of complications resolved.⁠^[13]

Because a numb foot may not hurt, the warning signs are mostly things you see or smell. Call us the same day if the cast rubs, cracks, gets wet, develops a soft spot or feels too tight or loose, or if you notice drainage, an odor, new pain or new swelling. Keeping a leg immobilized is also a known risk factor for blood clots,⁠^[14] so call promptly about calf pain or swelling.

What a cast can and can’t do

A cast has real limits. It isn’t safe for every wound, it can rub and cause new sores, and people may like it a little less than a locked walker, which heals a similar share of ulcers.⁠^[1]

Most of all, a cast heals the ulcer without changing the foot that made it. Once healed, an estimated 42% of diabetic foot ulcers return within a year.⁠^[15] In a randomized trial of people with a tight calf, 81% of those treated with a cast alone had a recurrence within about two years, compared with 38% of those who also had an Achilles tendon lengthening.⁠^[3] Surgical offloading changes the structure and function of the foot, so its relief lasts longer, even on days a device isn’t worn.⁠^[1]

Dr. Efe Ozturk, a Foot and Ankle Surgeon, performs these operations for the ulcers that need them; see surgery that takes pressure off ulcers, Achilles lengthening for forefoot ulcers and flexor tenotomy for toe ulcers.

After the last cast comes off

For a healed ulcer on the sole, the prevention guideline recommends therapeutic footwear shown to lower pressure while you walk, worn consistently indoors and outdoors.⁠^[16] We fit therapeutic shoes and custom inserts; see offloading boots and protective footwear and keeping your foot in remission.

The inconvenience is temporary. In a trial that measured quality of life during offloading, scores improved over 12 weeks whichever device people used, and seemed to depend less on the device than on whether the wound healed.⁠^[17]

Common questions

Can I shower with a total contact cast?

Yes, if the cast is fully covered and kept out of baths, pools and running water.⁠^[6]

Can I use a removable boot instead?

Sometimes. A removable device is the guideline’s second choice when a non-removable one isn’t suitable or workable for you.⁠^[1] Its weakness is that it comes off, and people often leave it off.⁠^[5]

Can I drive in a total contact cast?

Ask us first. In a simulator study, the researchers concluded that people wearing any plaster leg cast are significantly impaired in making an emergency stop.⁠^[11]

Will the ulcer stay healed once the cast is off?

Not always. Ulcers often return,⁠^[15] so protective footwear matters,⁠^[16] and for some feet, surgery that removes the source of pressure lowers the chance of another ulcer.⁠^[3] If a new sore appears, read why early wound care matters.

The bottom line

A total contact cast asks a lot for a few weeks: regular visits, fewer steps, covered showers and rides instead of driving. In return, it protects the ulcer on every step. Keep every appointment, call about anything that rubs, smells or swells, and plan with us for what comes next, whether that is protective footwear or an operation that keeps the ulcer from coming back.