Knee Replacement: What You Need to Know Before Surgery

If your knees hurt all the time and simple treatments aren’t helping, a knee replacement might be on the table. It’s a big step, but knowing the basics can calm nerves and help you plan better. A knee replacement swaps out the damaged joint surfaces with metal and plastic parts, letting you move with far less pain. Most people feel a big improvement in daily life, but the journey includes prep, surgery, and rehab.

Common Questions About Knee Replacement

People ask a lot of things before they decide. The first question is usually, Will I be in pain after surgery? Expect some soreness for the first few weeks, but doctors give pain meds and guide you on safe movement. Another frequent query: How long does the surgery take? The operation itself is usually 1‑2 hours, but you’ll spend a few hours in the hospital for monitoring. What about the implant’s lifespan? Modern knee implants often last 15‑20 years, sometimes longer if you stay active and keep a healthy weight.

Many wonder if they can drive right after. Most surgeons say you shouldn’t drive until you’re pain‑free and can bend the knee enough to press the pedals, usually about 4‑6 weeks. If you have other health issues like diabetes or heart disease, recovery might be a bit slower, so talk with your surgeon about a realistic timeline.

How to Prepare and Recover

Preparation starts weeks before the cut. Begin a gentle strength program – simple leg lifts, straight‑leg raises, and short walks help the muscles around the knee stay strong. Clean up any smoking habit; nicotine makes healing tougher. Meet with a physiotherapist early so you know the exercises you’ll do after surgery.

On the day of surgery, wear loose clothing and bring a pair of comfy shoes. Your hospital team will give you clear instructions on fasting and medication. After the operation, you’ll likely spend 1‑2 days in the hospital. Physical therapy starts the same day – even tiny movements make a difference.

At home, set up a safe space: clear rugs, keep a night light on, and have a sturdy chair nearby. Do the prescribed exercises several times a day; they’re the key to regaining range of motion. Ice the knee for 20 minutes a few times daily to cut swelling. Most people walk without crutches after 4‑6 weeks, but full strength can take 3‑6 months.

While you’re healing, stay on top of nutrition. Protein‑rich foods, fresh fruits, and veggies support tissue repair. Drink plenty of water and avoid heavy alcohol, which can slow healing. If you feel any unusual pain, redness, or fever, call your doctor right away – these could be signs of infection.

Looking at the posts on our site can give you extra insight. Check out "Key Questions to Ask Your Orthopedic Doctor" for a checklist of what to discuss at your appointment, and read "Is Bone Surgery Painful?" for a realistic look at pain expectations and control options. Together, these resources help you walk into surgery feeling prepared and walk out with confidence.