12 Things to Know Before Having a Knee Replacement

2. Benefits and Risks

Knee replacement surgery can reduce long-term pain and improve movement in people with severe knee problems. Many people notice better comfort while walking, climbing stairs, or standing for longer periods. These improvements often allow you to return to daily activities with fewer limits and regain a sense of independence.

The new joint can make your knee feel steadier and smoother. Artificial components made of metal and plastic are designed to glide with less friction than a damaged joint. With proper care and activity at a healthy level, most knee replacements last about 15 to 20 years before showing signs of wear.

Like all surgical procedures, knee replacement also carries risks. Possible complications include infection, blood clots, swelling around the joint, temporary stiffness, or nerve irritation that may limit movement during recovery. In rare cases, the artificial joint may loosen, wear down, or require another procedure later on.

3. Surgery Cost

The cost of knee replacement surgery can vary based on where you have it done, the type of procedure, and how long you stay in the hospital. Private hospitals often charge higher prices than public facilities. In most cases, the total cost includes the surgeon’s fee, anesthesia, the hospital stay, and the artificial joint.

Costs may also differ based on whether you have a total or partial knee replacement. A total replacement usually costs more because it involves more materials and a longer procedure. Additional expenses may include pre-surgery tests, blood work, imaging, and follow-up appointments. If you have insurance, it is important to check what portions of the surgery are covered.

Some plans pay for the hospital and surgeon but may not include rehabilitation or physical therapy afterward. Asking for a detailed cost estimate before surgery helps you understand potential out-of-pocket expenses. Don’t forget to think about the costs that come with recovery, like home care services, things like walkers or bathroom supports, and any pain meds your doctor might prescribe.

4. Following Instructions

Your doctor and care team will provide detailed instructions before and after knee replacement surgery. Following these directions closely helps reduce the risk of complications and supports smoother healing. Instructions often cover incision care, pain management, and when to begin gentle movement.

While you are in the hospital, you may start simple leg exercises to improve circulation and help prevent blood clots. After returning home, you will probably need to take a blood thinner for a short time and wear compression stockings or sleeves. These help reduce swelling and protect against clot formation.

Completing exercises as directed helps strengthen muscles and improve knee movement. Skipping sessions or pushing too hard too early can slow healing and limit progress. Small habits, including proper use of a cane and maintaining good posture when sitting or standing, also support safe recovery and long-term knee function.

5. Tests and Evaluations

Before a knee replacement, your surgical team will make sure your body is ready for the procedure. This preparation helps reduce risks during surgery and supports a smoother recovery. Most evaluations take place in the weeks leading up to your operation.

Your doctor usually begins with a review of your medical history and a physical exam. You may be asked about long-term conditions, past surgeries, medications, and family health history. This visit also covers how knee pain or stiffness affects your daily activities.

Standard pre-surgery tests include blood work, a chest X-ray, and an electrocardiogram (ECG). Blood tests assess factors such as blood cell counts, kidney and liver function, and blood sugar levels. The ECG checks your heart rhythm to ensure it can handle the stress of surgery.

You might need extra tests if you have certain health conditions. For example, people with heart disease may see a cardiologist, and those with diabetes may need blood sugar planning.

6. Physiotherapy

Physiotherapy plays a key role in helping you regain strength and movement after knee replacement surgery. You usually begin gentle exercises within a day or two, sometimes even while still in the hospital. A physiotherapist guides you on safe movements and shows you how to use walking aids such as crutches or a frame.

Once you return home, continuing these exercises becomes essential. Repeating them several times a day helps improve flexibility, rebuild muscle strength, and reduce stiffness. Common exercises focus on bending and straightening the knee, lifting the leg while lying down, and practicing short walks on flat surfaces.

Regular movement also supports healthy blood flow and lowers the risk of blood clots. Try to walk frequently throughout the day, even in short sessions. Use the walking aid recommended by your physiotherapist until you can move safely without support. Progress may feel slow at times, but steady, consistent movement is important for long-term recovery.

7. Lifestyle Change

Making lifestyle changes before and after knee replacement surgery helps support healing and long-term joint health. Healthy habits allow your body to recover more smoothly and keep your new knee working well. Even small adjustments to your daily routine can make a noticeable difference in comfort and mobility.

Before surgery, focus on balanced meals that include fruits, vegetables, lean protein, and whole grains. Maintaining a healthy weight reduces stress on your knees and lowers the risk of complications. If you smoke, try to quit. Smoking can slow down healing and affect circulation. Doing recommended exercises before surgery can make it easier to regain movement afterward.

Gentle exercises such as walking, swimming, or using a stationary bike help strengthen muscles and improve flexibility. Preparing your home in advance can support recovery. Move frequently used items to easy-to-reach spots, arrange help with chores or errands, and plan transportation since you won’t be able to drive for several weeks.

8. Surgical Diet

In the weeks leading up to surgery, focus on balanced meals that include lean protein, fruits, vegetables, and whole grains. These foods supply nutrients that support tissue repair and strength. Limiting fried or high-sugar foods can help prevent weight gain and reduce stress on the new knee joint.

Your care team will also give instructions about eating and drinking before surgery. You may need to stop eating six hours before the operation. In many cases, clear fluids such as water or clear juice are allowed up to two hours before surgery unless advised otherwise. This helps prevent dehydration while keeping your stomach empty for anesthesia.

Certain medications, including anti-inflammatory drugs, blood thinners, vitamins, or herbal supplements may need to be stopped before surgery because they can affect bleeding or anesthesia. Ask your doctor which medications to take or avoid on surgery day to help ensure a smooth surgery and recovery.

9. Stop Smoking

If you smoke, quitting before knee replacement surgery can lower your risk of problems during and after the operation. Smoking reduces blood flow and oxygen delivery to your tissues, which slows healing and increases the chance of infection. These effects can delay recovery and affect how well your new knee functions.

Your doctor may recommend stopping smoking several weeks before surgery. This gives your lungs and circulation time to improve. Some people find it helpful to use nicotine replacement products or medications that reduce cravings. These tools can ease withdrawal symptoms while your body adjusts to being smoke-free.

Spend time in places where smoking is not allowed, and plan activities that keep your hands and mind busy. If you slip and smoke again, do not give up. Most people try several times before quitting completely. Use each attempt to learn what triggers your cravings and make a plan to handle them better next time.

10. Home Reorganization

Before your knee replacement, prepare your home so it is safe and easy to move around in during recovery. Arrange your living space so most daily activities happen on one level. Limiting the need to climb stairs reduces strain and lowers the risk of falls.

Move your bed to the first floor if possible and choose a firm mattress that allows you to sit and stand easily. Place sturdy chairs with straight backs in frequently used rooms such as the kitchen, bedroom, and bathroom so you can rest when needed.

Place frequently used items between waist and shoulder height to avoid bending or reaching. Keep a phone or portable device within reach in every room, and prepare meals in advance by storing them in the freezer for easy reheating.

Remove loose rugs, cords, and clutter that could cause tripping. Keep floors dry, especially near sinks or showers. Use non-slip mats, install grab bars in the bathroom, and improve lighting in hallways. Adding night lights along walking paths helps prevent falls at night.

11. Support

Ask family or friends to help you with daily tasks such as shopping, laundry, or cooking. If personal help is not available, consider a short stay in a rehabilitation facility or hiring home support services. Having reliable support in place allows you to focus on healing without added physical strain.

Your healthcare team also plays an important role in your recovery. Your surgeon, nurses, and physical therapist provide guidance, answer questions, and monitor your progress. They teach safe ways to move, show you how to use walking aids, and guide you through exercises that protect your new knee.

Emotional support is just as important as physical care. It is common to feel anxious about surgery, pain, or recovery time. Talking with people who have had knee replacement surgery or joining a support group can build confidence and help address concerns early during recovery.

12. Pain Management

After knee replacement surgery, you will experience some pain as your body heals. Managing this pain is important because it helps you move, rest, and recover more comfortably. Your healthcare team will work with you to create a pain management plan based on your individual needs.

Your care team will likely prescribe different types of pain relief medications. These may include anti-inflammatory drugs, pain relievers that act on the nervous system, or local anesthetics. In some cases, medications that relax muscles or reduce nerve sensitivity may also be used.

Non-drug methods can also play a helpful role. Using cold packs, repositioning your leg, gentle stretching, and placing support pillows can reduce swelling and soreness. Relaxation techniques, such as slow breathing or light distractions, may further ease discomfort.

Physical therapy is another key part of pain control during recovery. Guided movement helps prevent stiffness, improves strength, and supports healing without overloading the knee. Doing exercises at the recommended pace can gradually reduce the need for stronger pain medications.