What is arthroplasty?
Arthroplasty, or joint replacement surgery, restores joint function by replacing, resurfacing or realigning the joint's surface. The recommended type of arthroplasty depends on your joint’s condition and your specific needs.
You may benefit from arthroplasty if you have signs that your joint is damaged, such as severe joint pain, inflammation or stiffness. A replacement joint, sometimes called a prosthesis, moves like a normal, healthy joint, reducing arthritis-related pain and many other types of joint damage.
Types of arthroplasty
Orthopedic surgeons can repair or replace various joints, including knees, hips, shoulders, wrists, fingers and ankles, with knees and hips being the most commonly replaced.
At Baylor Scott & White, you may have access to advanced robotic-assisted joint replacements, allowing for a personalized fit and precise placement with minimal incision and tissue damage, which can lead to a longer-lasting joint replacement.
Types of arthroplasties available at Baylor Scott & White include:
Total knee replacement
The cartilage between the femur (thigh bone) and tibia (shin bone), along with parts of each bone, are removed and replaced with synthetic materials. Sometimes, part of the kneecap is resurfaced, as well.
Partial knee replacement
Your knee has three compartments—the lateral (outside), medial (inside) and patellofemoral (the area between your kneecap and thigh bone). In partial knee replacement, one of these sections is removed and replaced, instead of the entire joint.
Total hip replacement
The head of your femur and the cartilage lining the hip socket (acetabulum) are removed and replaced with artificial materials.
Shoulder replacement
A shoulder replacement involves removing and replacing the head of the humerus (the upper arm bone) with a new synthetic joint. The head of the humerus is a ball that sits in a socket (the glenoid), and the lining of the glenoid is replaced with a plastic lining.
Reverse shoulder replacement
This procedure is similar to a shoulder replacement, except the ball is attached to the glenoid, and the head of the humerus is lined with plastic.
Why might I need joint replacement surgery?
You may need a joint replacement if you have severe joint damage and your symptoms haven’t responded to nonsurgical treatments, such as pain medications and physical therapy.
Arthritis is the most common condition that leads to having a joint replaced. The most common form, osteoarthritis, occurs when cartilage, tendons and other parts of a joint gradually break down. Other forms of arthritis, such as rheumatoid arthritis (an autoimmune condition where your immune system attacks your joints), can also be treated with joint replacement.
You may also need a joint replacement if you’ve experienced joint damage related to:
- Avascular necrosis
- Breaks or other orthopedic traumas
- Chronic joint dislocations
- Damage to ligaments, muscles and tendons surrounding a joint
- Tumors
How to prepare for arthroplasty surgery
Joint replacement surgery is a major procedure and will require presurgical visits with your surgical team and, possibly, physical therapy and weight loss to help ensure your procedure is as successful as possible.
If you’re having knee or hip replacement surgery, you’ll attend a class to learn how to prepare yourself and your home for surgery and what to expect from the procedure.
Presurgical visits
Your surgical team wants you to be in good physical health before surgery. You will have a physical exam with your primary care provider a few weeks before your procedure to see if you have any health conditions that make anesthesia risky. Your primary care provider or a specialist may also work with you to manage chronic conditions.
You may also need several tests before your procedure, including:
- Blood tests
- An electrocardiogram
- Urinalysis
- X-rays or other imaging tests
Exercise
Sometimes called “prehabilitation,” exercise before surgery may help ease your recovery and, if you’re overweight or obese, lose weight. Losing weight can reduce your risk of complications during and after surgery and may reduce stress on the new joint.
Depending on the surgery you’re having, your team may recommend prehabilitation with a physical therapist. If you do not have prehab, you can ask your surgeon about exercises that may help you prepare for surgery.
Preparing your home
Joint replacement surgery requires a few weeks of recovery. Before your surgery, you can arrange items at home and prepare in other ways to make your recovery easier. For example:
- If you live alone, ask a loved one if they can stay with you for a few days to help with cleaning, bathing, walking your dog and other household needs.
- Buy items, such as a shoehorn or grabber tool, that can help you avoid reaching or bending down.
- Clear paths in your living areas to make moving around easier.
- Cook meals in advance and freeze them.
- Move frequently needed items from upper or lower cabinets to a counter or other location where they are easier to reach.
- Remove trip hazards, such as throw rugs and electrical cords.
- Set up a temporary bedroom on a lower level if you want to avoid climbing stairs.
The arthroplasty procedure
Each arthroplasty is different, based on the joint you’re having replaced. In general, each procedure involves your surgeon removing damaged bone and cartilage and inserting a prosthesis.
Joint replacements generally take one to two hours, depending on the type you have. You may need to stay in the hospital overnight, but some types of joint replacement allow you to go home the same day as the procedure.
Before the procedure
In the weeks leading up to arthroplasty, your surgical team will give you instructions about medication use. You may need to temporarily stop certain medications, such as blood thinners or arthritis medications, before surgery.
You will also receive instructions about when to stop eating and drinking and when to arrive at the hospital.
Once you arrive, you’ll meet with the anesthesiologist. You will receive either general anesthesia, which puts you to sleep, or regional anesthesia, which numbs the area around a joint or a certain part of your body.
During the procedure
Once you are asleep or the area to be operated on is numb, your surgeon will make a cut, or incision, to gain access to your joint.
They will remove damaged bone and cartilage from the joint and replace them with a ceramic, plastic or metal prosthesis. In some joint replacements, the prosthesis is put in place using cement. In other procedures, the implant is press-fit, which means it is attached to bone that will eventually grow into the implant’s surface. This process is sometimes called cementless fixation.
The surgeon will close the incision when the new joint is in place.
After the procedure
You will be moved from the operating room into a recovery room while the anesthesia wears off. Your team will likely give you antibiotics to prevent an infection. If you’re staying in the hospital, you will move to your hospital room.
With most types of arthroplasty, your surgeon will want you to use your joint shortly after surgery. You may have physical therapy while you are still in the hospital.
Before you leave the hospital, you will have a recovery plan with specific exercises that help strengthen and improve your new joint’s range of motion. Your team will also help you with pain management to relieve any discomfort you may experience after surgery.
What are the risks of joint replacement surgery?
For most people, the benefits of joint replacement surgery outweigh the risks. Though it’s a major surgery and there’s always a chance of complications, many find a big improvement in daily life, especially if they’ve been in pain for a long time.
Rare complications may include:
- Blood clots
- Infection at the joint or surgery site
- Nerve damage
- Blood vessel damage
- Issues with the prosthetic, like early wear or loosening
- Scar tissue formation
- Stiffness or reduced range of motion
Talk to your healthcare provider or surgeon about the risks of a joint replacement. They’ll help you decide if arthroplasty is right for you.
Recovery
Recovery time after joint replacement depends on which joint was replaced and your overall health; it usually takes at least a few months. Following your team’s instructions and physical therapy plan will help. You should also attend follow-up visits with your surgeon so they can monitor your progress and help you manage pain or other symptoms after surgery. Your surgeon will create a personalized recovery plan, but here are general guidelines:
- Ice your joint: Apply ice a few times a day for 20 minutes to reduce pain and swelling.
- Elevate your joint: Keep it above heart level as often as possible using cushions or pillows.
- Keep your incision clean and covered: Follow your surgeon’s care instructions to prevent infections.
- Home exercises: Start exercises soon after surgery to strengthen muscles and prevent stiffness. Follow your surgeon's instructions.
- Physical therapy: Work with a physical therapist early for guidance on ways to start moving safely and to learn the exercises that you will continue for a few months.
- Avoid certain movements: Be cautious of movements that might cause dislocations, especially with hips and shoulders. Your surgeon or physical therapist will guide you on safe movements.
Frequently asked questions
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What is the difference between arthroplasty and joint replacement?
Arthroplasty and joint replacement usually refer to the same procedure. During an arthroplasty, damaged parts of a joint are removed and replaced with synthetic materials that allow the joint to move more naturally and with less pain.
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What is the difference between arthroscopy and arthroplasty?
An arthroscopy is a procedure in which surgeons use a small camera, or scope, to look inside a joint. Arthroplasty is surgery to repair or replace a joint. Orthopedic surgeons can perform some surgeries using arthroscopy, such as treating inflammation and repairing a torn ligament or rotator cuff.
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What two joints are the most commonly replaced with arthroplasty?
The two joints most commonly replaced are the hips and knees. However, orthopedic surgeons can replace many other joints, including thumbs, wrists, elbows and ankles.
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Is joint replacement a major surgery?
Yes, joint replacement surgery, or arthroplasty, is considered major surgery. You should discuss the benefits and possible complications with your medical team to ensure it is the right option for you.
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How long do joint replacements last?
Research has shown that new joints may last 10 years or longer. The general estimate for knee and hip replacements is more than 20 years. Joint lifespan depends on many factors, and your orthopedic surgeon can advise how to keep it healthy and functioning for as long as possible.