During total knee replacement surgery, the diseased knee joint is replaced with artificial material. The risks include blood clots in the legs, urinary tract infection, nausea and vomiting, chronic knee pain, nerve damage, and infection. Read more: Knee Replacement Surgery and Recovery Time Article
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What Is Rheumatoid Arthritis (RA)? Symptoms, Treatment, Diagnosis
What is rheumatoid arthritis (RA)? Learn about treatment, diagnosis, and the symptoms of juvenile rheumatoid arthritis. Discover...
Osteoarthritis (OA): Treatment, Symptoms, Diagnosis
Osteoarthritis (OA) is a degenerative joint disease most often affecting major joints such as knees, hands, back, or hips....
Exercises for Knee Osteoarthritis and Joint Pain
Learn about osteoarthritis and exercises that relieve knee osteoarthritis pain, stiffness and strengthen the knee joint and...
Pain Management: Knee Pain Dos and Don'ts
Your knees go through a lot in the course of a day, and sometimes they can run into trouble. Here are a few things you can do...
OA Knee Replacement: Before and After
Find out what to expect with knee replacement surgery in this WebMD slideshow.
Picture of Knee Joint
The knee joint has three parts. See a picture of Knee Joint and learn more about the health topic.
Picture of Osteoarthritis
Osteoarthritis is a type of arthritis that is caused by the breakdown and eventual loss of the cartilage of one or more...
Knee Pain: 8 Exercises to Help Your Knees
Getting over a knee injury? WebMD shows you moves that can help make you stronger, so you're less likely to get re-injured.
Related Disease Conditions
What Can Cause Pain Behind the Knee?
What causes pain behind the knee? Learn about Baker's cyst and other causes of pain behind the knee and what to do about them.
Knee injuries, especially meniscus tears, are common in contact sports. Symptoms and signs of a torn meniscus include knee pain, swelling, a popping sound, and difficulty bending the leg. Treatment may involve resting, icing, compressing, and elevating the knee, in addition to wearing a knee brace, taking anti-inflammatory medications, and stretching the knee.
Blood Clots (in the Leg)
Blood clots can form in the heart, legs, arteries, veins, bladder, urinary tract, and uterus. Risk factors include high blood pressure and cholesterol, diabetes, smoking, and family history. Symptoms and treatment depend on the location of the clot.
Acute injuries, medical conditions, and chronic use conditions are causes of knee pain. Symptoms and signs that accompany knee pain include redness, swelling, difficulty walking, and locking of the knee. To diagnose knee pain, a physician will perform a physical exam and also may order X-rays, arthrocentesis, blood tests, or a CT scan or MRI. Treatment of knee pain depends upon the cause of the pain.
Rheumatoid Arthritis (RA)
Rheumatoid arthritis (RA) is an autoimmune disease that causes chronic inflammation of the joints, the tissue around the joints, as well as other organs in the body. Early RA signs and symptoms include anemia, both sides of the body affected (symmetric), depression, fatigue, fever, joint deformity, joint pain, joint redness, joint stiffness, joint swelling, joint tenderness, joint warmth, limping, loss of joint function, loss of joint range of motion, and polyarthritis.
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Arthritis (Joint Inflammation)
Arthritis is inflammation of one or more joints. When joints are inflamed they can develop stiffness, warmth, swelling, redness and pain. There are over 100 types of arthritis, including osteoarthritis, rheumatoid arthritis, ankylosing spondylitis, psoriatic arthritis, lupus, gout, and pseudogout.
Osteoarthritis is a type of arthritis caused by inflammation, breakdown, and eventual loss of cartilage in the joints. Also known as degenerative arthritis, osteoarthritis can be caused by aging, heredity, and injury from trauma or disease.
Ankylosing spondylitis is a type of arthritis that causes chronic inflammation of the spine. The tendency to develop ankylosing spondylitis is genetically inherited. Treatment incorporates medications, physical therapy, and exercise.
A Baker's cyst, also called a popliteal cyst, is swelling caused by knee joint fluid protruding to the back of the knee (popliteal area of the knee). Not uncommon, Baker's cysts can be caused by virtually any type of joint swelling (arthritis). They are often resolved with removal of excess knee fluid in conjunction with cortisone injections.
Osteoarthritis vs. Osteoporosis Differences and Similarities
Arthritis is defined as painful inflammation and joint stiffness. Osteoarthritis is a type of arthritis and the most common cause of chronic joint pain, affecting over 25 million Americans. Osteoarthritis is a type of arthritis that involves the entire joint. Osteoporosis is not a type of arthritis. It is a disease that mainly is caused by a loss of bone tissue that is not limited to the joint areas. It is possible for one person to have both osteoarthritis and osteoporosis. The differences in the signs and symptoms of osteoarthritis and osteoporosis include; pain, stiffness, and joint swelling, joint deformity, crackle sounds when the joint is moving, and walking with a limp. Osteoporosis is called the "silent disease" because it can progress for years without signs and symptoms before it is diagnosed, severe back pain, bone fractures, height loss, and difficulty or inability to walk. The differences in the causes of osteoarthritis and osteoporosis are that osteoarthritis usually is caused by wear and tear on the joints. Osteoporosis usually is caused by one or more underlying problems, for example, calcium and vitamin D deficiencies. Treatment for osteoarthritis and osteoporosis are not the same. There is no cure for osteoarthritis or osteoporosis.
Psoriatic arthritis is a disease that causes skin and joint inflammation. Symptoms and signs include painful, stiff, and swollen joints, tendinitis, and organ inflammation. Treatment involves anti-inflammatory medications and exercise.
Arthritis in Knee: 4 Stages of Osteoarthritis
Painful joint swelling is called arthritis. Osteoarthritis is due to wear and tear of the joints over many years. Arthritis maye develop in any joint, including the fingers, hips and knees. Usually, patients with arthritis feel pain in their joints even after moderate movements. There are four stages of osteoarthritis of the knee.
Aseptic necrosis (avascular necrosis or osteonecrosis) develops when blood supply diminishes to an area of bone and causes bone death. Though aseptic necrosis may be painless, pain is often associated when using the degenerating bone. If caught early, aseptic necrosis may be treated by grafting new bone into the degenerating area. In later stages, joint replacement surgery may be required.
What Are the Different Types of Knee Surgery?
Different types of knee surgery include knee replacement surgery, ACL surgery, and meniscus surgeries.
Malignant hyperthermia is a severe reaction to certain drugs that are often used during invasive procedures or surgery. Certain mutations in genes increase the risk of a person having malignant hyperthermia. Without prompt treatment, the complications of malignant hyperthermia can be life-threatening.
How Do I Fix My Front of Knee Pain?
Front of knee pain is also called anterior knee pain. Fix your front of the knee pain by using lifestyle changes, medical treatments, and exercises.
What Are the 7 Best Exercises for Knee Pain?
Knee pain is a common problem that can have a number of different causes. The seven best exercises for knee pain are the single-leg lift, leg stretch, hamstring curls, sit to stand, seated leg lift, heel step up and quad stretch with towel roll.
How Do I Know If My Knee Pain Is Serious?
Some knee pain may subside with adequate rest and other physical therapies, which can be done at home; however, knee pain that doesn’t dissolve easily with rest should be considered serious and requires medical attention. Knee pain is the most common complaint of the musculoskeletal system.
What Are 9 Ways That You Can Ruin Your Knees?
Knee problems are typically caused by general wear and tear from daily activities, although injuries and osteoarthritis could also be responsible.
Local ResourcesFind a local Orthopedic Surgeon in your town
Treatment & Diagnosis
- Chest X-Ray
- What Are the Different Types of Knee Injections?
- Electrocardiogram (ECG or EKG)
- What Is Total Knee Arthroplasty (TKA)?
- Total Hip Replacement
- Questions To Ask Before Surgery
- Physical and Occupational Therapy for Arthritis
- How Is Knee Arthrocentesis Performed?
- What Is Allograft Reconstruction of ACL-Deficient Knee?
- What Is an Unicompartmental Knee Arthroplasty?
- Chondroitin Sulfate & Glucosamine: What is it?
- Chondroitin Sulfate & Glucosamine: Effectiveness
- Chondroitin Sulfate & Glucosamine: Indications
- Chondroitin Sulfate & Glucosamine: Success
- Chondroitin Sulfate & Glucosamine: Side Effects
- Chondroitin Sulfate &Glucosamine: Proper Use
- Chondroitin Sulfate & Glucosamine: Other Use
- Chondroitin Sulfate & Glucosamine: Benefits
- Chondroitin & Glucosamine & NSAID's
- Chondroitin Sulfate & Glucosamine: Supervision
- Hospital: 10 Tips: Packing for a Hospital Stay
- Can You Be Too Young for a Knee Replacement?
- Can You Regrow Cartilage?
- Hospitals: Can Yours Handle Your Emergency?
- Caring for Stitches (Sutures)
Medications & Supplements
Prevention & Wellness
- Having a Hip, Knee Replacement? Some Tips to an Optimal Recovery
- Knee Replacement in Folks Over 80: Less Risky Than You Think
- When Is It Time for a Knee Replacement?
- Upcoming Surgery Worry You? Poll Says You're Not Alone
- A Non-Opioid Way to Pain Relief After Knee, Shoulder Surgeries
- Is a Night in the Hospital Necessary After Hip, Knee Replacement?
- Acupuncture During a Knee Replacement Could Lessen Post-Surgical Pain
- Knee Replacement Won't Keep Golfers Off the Course
- One-Dose Blood Thinner Could Slash Blood Clot Risk After Knee Replacement
- A Vitamin Could Be Key to Women's Pain After Knee Replacement
- Knee Procedure Done Earlier Might Prevent Knee Replacement Later
- What Jobs Are Toughest on the Knees?
- COVID-19 Will Delay 28 Million Elective Surgeries Worldwide: Study
- Your Doctor Wants to Reschedule That Surgery. But Is It Safe Now?
- All in the Timing: Many Get Knee Replacement Too Late or Too Soon
- Got Knee Pain? What You Need to Know About Alternatives to Surgery
- Why a Knee Replacement Can Go Bad
- Most Hip, Knee Replacements Last Decades, Study Finds
- Germs Grow on Medical Implants, But Can They Make You Sick?
- A Surgery-Free Fix for Bad Knees?
- After Knee Replacement, Play On
- Obesity to Blame for Epidemic of Knee Dislocations, Complications
- Study Finds Options to Opioid Use After Knee Surgery
- Obese Don't Have to Lose Weight Before Joint Replacement: Study
- Taking Opioids Before Knee Surgery Could Raise Pain Later
- Stem Cells for Knees: Promising Treatment or Hoax?
- Knee Replacement Doesn't Always Pay, Researchers Say
- Obesity May Not Compromise Knee Surgery Success
- Home Beats Rehab for Knee, Hip Replacement Recovery
- Knee Surgery Rarer, but Problems More Likely, for Minority Patients
- Health Tip: Exercising After Joint Replacement
- New Treatment Shows Promise for Crippling Knee Arthritis
- Knee Replacement Patients May Be Able to Hit the Shower Sooner
- Getting Active After Knee Replacement Might Raise Hip Fracture Risk
- Knee Replacement Brings Less Pain, Better Function
- Obesity Won't Affect Joint Surgery Safety, Study Finds
- More Americans Getting Knees Replaced, And at Younger Ages
- Knee, Hip Replacement Surgeries Linked to Heart Risks
- Knee Replacement May Ease Pain for Rheumatoid Arthritis Patients
- Study Questions Value of Arthroscopic Knee Surgery for Older Patients
- In-Patient Rehab Not Always Needed After New Knee
- Health Tip: Preparing for Joint Replacement Surgery
- Better Pain Relief After Knee Replacement Surgery?
- Weight-Loss Surgery Has Low Complication Rates, Study Finds
- Study Questions Value of Certain Knee Surgeries
- Health Tip: Recovering After Knee Replacement
- Can 6,000 Steps a Day Keep Knee Arthritis at Bay?
- Knee Replacement Surgeries Rising With Obesity Rates
- Weight Loss May Boost Success of Joint-Replacement Surgery
- Pain Can Plague Women After Knee Replacement Surgery
- New Knees, Hips May Also Help the Heart
- Will You Need Knee Replacement? Maybe Your Hand Can Tell You
- Shoulder Replacement May Help for Severe Rheumatoid Arthritis
- Hormone Therapy May Cut Risk of Repeat Joint Replacement Surgery in Women
- Death Rate After Hip, Knee Replacements Has Dropped Sharply: Study
- Surgeons' Group Gives Gift of New Hips, Knees to Uninsured
- Obesity Is Driving Surge in Knee Replacements, Study Finds
- Knee Replacement Often Beneficial for Rheumatoid Arthritis: Study
- Poorer Patients Often Less Happy With Knee Replacement
- Return-to-Work Rate High After Knee Replacement, Study Finds
- Joint Replacement May Reinvigorate Sex Life
- Diabetes Doesn't Seem to Raise Risks After Knee Replacement
- Weight Gain a Risk After Knee Replacement, Study Finds
- Surgery Checklists Help OR Teams in a Crisis, Study Finds
- Certain Arthritis Patients Fare Worse After Joint Replacement: Study
- U.S. Sees a Run on New Knees Since 1990s
- FDA Rejects New Use for Blood Thinner Xarelto
- More Than 4 Million Americans Have New Knee
- Timing of Aquatic Therapy After Joint Replacement Matters
- Total Knee Replacement Safe for Most Patients