Most people leave the hospital after a knee or hip replacement with a discharge sheet, a prescription, and a vague sense that they should have bought something before surgery. By then the window to prepare calmly has closed. The first two weeks at home are when swelling peaks, when getting from the bed to the bathroom is the hardest task of the day, and when the equipment sitting in the living room decides how much of that day is spent in discomfort.

The market for home medical equipment is crowded, and plenty of it is sold to people who will never use it twice. This guide separates the recovery devices that do real work after joint replacement recovery from the ones that collect dust, and explains what each piece is actually for so the decision is yours rather than a salesperson’s.

What recovery equipment is actually for

Every useful item in post-operative care does one of two jobs. Understanding which job a device performs makes the shopping list short.

The first job is swelling management. Surgery on a joint produces inflammation and fluid buildup in the surrounding soft tissue. Post-surgical swelling restricts range of motion, causes a large share of the pain patients report in the first month, and slows the tissue healing underneath. Cold therapy and compression therapy both target this directly.

The second job is safe movement. A joint that has just been replaced cannot bear load the way it used to, and the muscles around it are weak from both the surgery and the months of guarding that preceded it. Walkers, raised seating, grab bars, and reaching aids exist so that normal daily movement does not become a fall risk or a strain on fresh surgical work.

Anything that does neither job is optional. Keep that filter in mind as the list grows.

Cold therapy: the one device most patients should have

If a recovery budget allows only one piece of equipment, a cold therapy machine is usually where it goes. Surgeons recommend cold therapy after joint procedures because chilling the tissue slows local metabolic activity, narrows blood vessels, and reduces the swelling and nerve signalling that drive pain.

Why a machine beats a bag of ice

Ice packs work for about fifteen minutes. After that they warm up, the temperature at the skin drifts, and someone has to get up, walk to the freezer, and swap them. A patient on a sofa with a fresh knee replacement is not going to do that eight times a day, and the ones who try often ice too aggressively because a frozen gel pack straight from the freezer sits well below safe skin temperature.

A cold therapy machine solves both problems. A small insulated reservoir holds ice water, a pump circulates it through a wrap fitted to the knee, hip, or shoulder, and the temperature stays within a consistent band for as long as the ice lasts, commonly five to eight hours on a single fill depending on the unit. Treatment becomes something that happens while the patient rests rather than a task to be managed.

What separates a good unit from a cheap one

Four things matter when comparing cold therapy systems.

• Reservoir capacity and insulation, which decide how often someone refills it. Larger tanks with thicker insulation run longer between fills.
• Pad design for the specific joint. A knee wrap that bends with the joint and a hip pad that covers the lateral incision are not interchangeable, and a poorly shaped pad leaves the swollen areas uncooled.
• Temperature control. Units with adjustable flow or a thermostat let the patient stay in the therapeutic range instead of guessing.
• Pump noise and reliability, which sounds minor until the device runs overnight beside a bed.

Cold compression therapy

Some systems add intermittent pressure to the same wrap. Cold compression therapy applies cold and mechanical pressure together, which pushes accumulated fluid out of the surgical area while the tissue is chilled. For patients whose main complaint is a tight, heavy, swollen joint rather than sharp pain, these combination units tend to deliver more relief per hour of use than cold alone.

Using it without causing harm

Cold therapy is safe when the protocol is followed and risky when it is not. Prolonged uninterrupted cold against skin that has reduced sensation from nerve blocks or anaesthesia can cause tissue injury. Always keep a layer of fabric between the pad and the skin unless the manufacturer states otherwise, follow the on and off intervals the surgical team gives, and check the skin regularly for colour changes, numbness, or blistering. Patients with diabetes, peripheral neuropathy, or circulatory conditions should confirm their protocol with the surgeon before starting.

Compression therapy and circulation support

Compression therapy does the other half of the swelling work. Where cold reduces how much fluid accumulates, compression helps move what has already collected back into circulation.

Graduated compression garments

The simplest version is a graduated compression stocking or sleeve, tighter at the far end of the limb and looser as it moves up. Many surgical teams send patients home in them and ask that they be worn for several weeks. They are inexpensive, they need no power, and the main failure is people giving up on them because getting a tight stocking onto a leg that cannot bend is genuinely difficult. A stocking donner costs very little and is the difference between a garment that gets worn and one that ends up in a drawer.

Pneumatic compression devices

Pneumatic compression takes the same principle further. Inflatable sleeves wrap the calf, thigh, or foot, and a pump cycles air through chambers in sequence, squeezing the limb from the ankle upward and then releasing. The cycle mimics the pumping action that walking normally provides, which is exactly what a post-surgical patient cannot do much of.

Two reasons these units appear on discharge instructions:

1. Clot prevention. Reduced mobility after joint surgery raises the risk of deep vein thrombosis. Intermittent pneumatic compression keeps venous blood moving and is used in hospitals for this purpose, which is why surgeons often want it continued at home during the least mobile stretch of recovery.
2. Swelling management. Sequential compression drains interstitial fluid more effectively than a static garment, and patients frequently report that a twenty to thirty minute session noticeably loosens a tight joint.

When comparing pneumatic units, look at the number of chambers, whether the cycle is sequential or uniform, the pressure range, and whether the sleeves cover the area the surgeon is concerned about. A calf sleeve does nothing for thigh swelling after a hip procedure.

Anyone with existing circulatory disease, an active clot, open wounds outside the dressing, or significant heart failure should not begin compression therapy without clearance from their physician.

Mobility and daily living equipment

This category is where households overbuy and underprepare at the same time. Three items get purchased that nobody uses, and the one item that would have prevented a fall never arrives.

Walker or crutches

Almost every knee surgery recovery and hip surgery recovery begins with a front wheeled walker. It gives four points of contact, allows controlled weight shifting, and fits through most interior doorways. Crutches demand more upper body strength and better balance, so they tend to suit younger patients and later weeks rather than day three. Whatever the device, the handle height should put the grip at wrist crease level when the arms hang relaxed, and the surgical team should confirm the fit before discharge.

A walker tray or a bag that clips to the frame sounds trivial and removes a real problem, since both hands are occupied and carrying a cup of coffee across a room otherwise becomes impossible.

Raised toilet seat with safety frame

The single most used piece of equipment in the first month. A standard toilet sits low enough that rising from it requires deep hip and knee flexion plus a hard push through the operated leg. A raised seat with arms reduces the depth of that movement and gives the arms something to push against. For hip patients working under movement restrictions, it is often not optional.

Shower chair and grab bars

Bathrooms account for a large share of household falls, and a wet floor with a patient on one functional leg is the worst combination in the house. A shower chair or tub transfer bench lets bathing happen seated. Grab bars should be anchored into studs or installed with properly rated suction mounts, never attached to a towel rail or a glass panel. Add a long handled sponge and a handheld shower head and the whole routine becomes a one person job again.

Reachers, sock aids, and long handled shoe horns

These cost very little and solve the problem that occupies most of weeks one through four: bending forward is either painful or forbidden. A reacher retrieves a dropped phone. A sock aid gets a compression stocking started. A long shoe horn makes shoes possible without help. Patients who skip these generally end up asking another person for help twenty times a day.

Seating and sleeping setup

No purchase needed, just planning. A firm chair with arms and a seat height that keeps the hips above the knees is far easier to leave than a soft sofa. Clear a path from the bed to the bathroom, remove loose rugs and extension cords, and set up a bedside table within arm’s reach for water, medication, and a phone.

Rehabilitation equipment worth owning

Physical therapy does the heavy lifting in orthopedic recovery, and most of it needs no equipment at all. A few items support the work between sessions.

Resistance bands in two or three tensions cover nearly every home exercise a therapist will prescribe for quadriceps, glute, and hip abductor strengthening. They cost almost nothing and travel anywhere.

A pedal exerciser, a small set of pedals placed in front of a chair, gives knee patients a way to work on flexion and blood flow in short frequent sessions without standing. It is one of the few inexpensive items that patients keep using into month two and three.

A foam roller or a rolled towel supports heel slides, quad sets, and the terminal knee extension work that decides whether a knee straightens fully. Full extension is harder to recover late than early, which is why therapists push it hard in the first weeks.

Continuous passive motion machines, which move the knee through a set arc automatically, occupy a more debated position. Some surgeons still prescribe them, others have moved away from them in favour of early active motion and walking. They are expensive and bulky, so this is a device to obtain only when the operating surgeon specifically asks for it.

A simple goniometer or even a phone app that measures joint angle lets patients track range of motion week by week. Progress in orthopedic recovery is slow enough that it becomes invisible without a number to look at, and seeing the number move is often what keeps someone doing the exercises.

Where knee and hip equipment lists diverge

The two procedures share most of their equipment and differ in a few decisive places.

Hip patients are frequently given movement restrictions for the first several weeks, which commonly limit bending the hip past ninety degrees, crossing the operated leg over the midline, and rotating the leg inward. The exact restrictions depend on the surgical approach, and anterior approaches often carry fewer of them. This is the reason dressing aids and raised seating move from convenience to necessity for hip patients: without them, ordinary actions like putting on socks or sitting on a standard toilet breach the limits the surgeon set.

Knee patients face a different problem. A knee that does not regain full extension early tends to stay that way, and swelling is the main obstacle. That makes aggressive cold therapy and compression therapy more central to knee surgery recovery than to hip recovery, and it makes the extension exercises non negotiable even on days they feel pointless.

Buying versus renting, and what insurance covers

Most of this equipment falls under the category of durable medical equipment, meaning items built for repeated medical use in the home. That classification matters because it determines what a plan may pay for and how the item is supplied.

When renting makes sense

DME rental fits equipment with a short useful life in a specific recovery. A cold therapy machine is used intensively for three to six weeks and then stored forever. The same applies to pneumatic compression units, continuous passive motion machines, and tub transfer benches. Renting also avoids the problem of buying the wrong size, since a supplier can swap a pad or a sleeve that does not fit.

When buying makes sense

Buy the inexpensive items outright. Reachers, sock aids, resistance bands, shower chairs, raised toilet seats, and compression stockings cost less than a few weeks of rental and often get used again by someone else in the household. Buy the cold therapy machine too if a second joint procedure is already planned, which is common since many patients have both knees done.

Working with insurance

Coverage varies by plan, and the pattern is consistent enough to plan around. Items the surgeon documents as medically necessary stand a far better chance of being covered than items a patient buys on their own judgement. Walkers, commodes, and compression devices are more frequently covered than comfort items. Cold therapy machines sit in a grey area and are often paid out of pocket.

Three practical steps make this smoother:

1. Ask the surgical team for a written list of recommended equipment before surgery, including any prescription language a supplier will need.
2. Call the plan and ask specifically whether each item requires prior authorisation and whether the supplier must be in network.
3. Keep every receipt. Items paid out of pocket are sometimes reimbursable later, and many are eligible for health savings or flexible spending accounts.

Set it up before surgery day

Everything described here should be in the house, assembled, and tested before the procedure. Install grab bars while someone can still stand on two legs. Fit the walker and practise with it. Fill the cold therapy reservoir once and run it to confirm the pump works. Move furniture, clear walkways, and decide which room becomes the recovery base. The alternative is a family member assembling a shower chair at nine at night while the patient waits.

A realistic home recovery timeline

Equipment needs change as recovery progresses. Planning for all of it at once leads to purchases that sit unused.

Week one. Cold therapy runs several times a day. The walker goes everywhere. The raised toilet seat and shower chair are in constant use. Compression garments stay on as instructed. Most waking hours are spent in the recovery chair with the leg elevated.

Weeks two and three. Swelling is still significant and cold therapy continues, often with compression added. Therapy exercises ramp up and resistance bands come into use. Many knee patients start the pedal exerciser. Walking distance grows and the walker begins to feel restrictive.

Weeks four to six. The walker gives way to a cane for many patients, though this depends entirely on the surgeon’s clearance. Hip restrictions commonly lift around this point, which retires the dressing aids. Cold therapy use drops to after therapy sessions and at the end of active days.

Beyond six weeks. Most rented equipment goes back to the supplier. What remains in use is the resistance bands, the exercise programme, and occasional cold therapy after heavier activity. Range of motion and strength keep improving for months, and swelling that appears after a long day is normal well into the recovery.

Frequently asked questions

This article is general information about recovery equipment and is not medical advice. Follow the instructions given by your surgeon and physical therapist, who know the specifics of your procedure.