Warning! Your browser is extremely outdated and not web standards compliant.
Your browsing experience would greatly improve by upgrading to a modern browser.
 
  • Knee joint replacement - Animation

    Knee joint replacement

    Animation

  • Knee joint replacement - Animation

    Your knee has been hurting for a while, and it hurts bad. You've had trouble sleeping. It may be hard to bathe, to do normal chores like wash the car, or even be comfortable on the job. You may have severe arthritis in your knee, and if so there's a good chance you need a knee replacement. So, what is a knee replacement?Knee replacements are usually done in people age 60 and older. If you need one, you probably have severe arthritis that limits your daily life. During knee joint replacement, your surgeon will remove damaged cartilage and bone from the knee joint. The surgeon then puts man-made pieces, called prostheses, in their place. The lower end of the thigh bone, also called the femur, is usually replaced with a metal part. The part that replaces the upper end of the shin bone, the tibia, is usually made from metal and a strong plastic. The piece that replaces the back side of your kneecap, or patella, is usually made from a strong plastic. You shouldn't feel any pain during surgery because you will have medicine to make you fall asleep. The surgeon will make a cut over your knee to open it up. The cut is usually eight to ten inches long. Your surgeon will move your kneecap out of the way, then cut the ends of your thigh bone and shin bone to fit the replacement part. The surgeon will then cut the underside of your kneecap and prepare it for the new pieces that will attach there. The surgeon then fastens the two parts of the prosthesis to your bones (the upper end of the shin bone and the lower end of the thigh bone). Then the parts are attached to the underside of your kneecap using a special cement. The surgery usually takes a couple hours. After surgery, you will probably stay in the hospital for three to five days. As soon as the first day after surgery, you will be asked to start moving and walking around with a walker, crutches, or a cane. You will likely need physical therapy to strengthen your new joint after your operation. Some people need a short stay in a rehabilitation center after they leave the hospital. At the rehab center, you will learn how to safely do your daily activities on your own. Full recovery can take three months to a year. Your new knee should last for 15 years or maybe even 20. And in the mean time, your new knee should allow you to resume your daily activities once you have learned to move around. Most or all of your pain and stiffness should go away.

  • Knee pain

    Knee pain

    The location of knee pain can help identify the problem. Pain on the front of the knee can be due to bursitis, arthritis, or softening of the patella cartilage as in chondromalacia patella. Pain on the sides of the knee is commonly related to injuries to the collateral ligaments, arthritis, or tears to the meniscuses. Pain in the back of the knee can be caused by arthritis or cysts, known as Baker's cysts. Baker's cysts are an accumulation of joint fluid (synovial fluid) that forms behind the knee. Overall knee pain can be due to bursitis, arthritis, tears in the ligaments, osteoarthritis of the joint, or infection.

    Knee pain

    illustration

  • Runners knee

    Runners knee

    Chondromalacia causes knee tenderness, knee pain in front of the knee, and a grating sensation in the knee. The knee pain is worst after sitting for a prolonged period of time or when getting out of a chair. The knee cartilage is affected probably from overuse, trauma and/or abnormal forces on the knee, such as a misaligned patella. Chondromalacia is treated with rest or immobilization and nonsteroidal anti-inflammatory drugs for pain. Physical therapy, especially quadriceps strengthening and hamstring stretching may also be helpful. Surgery is beneficial if there is a problem with the alignment of the patella that cannot be corrected with therapy.

    Runners knee

    illustration

  • Knee joint replacement  - series

    Knee joint replacement - series

    Presentation

  • Knee arthroscopy  - series

    Knee arthroscopy - series

    Presentation

  • Knee joint replacement - Animation

    Knee joint replacement

    Animation

  • Knee joint replacement - Animation

    Your knee has been hurting for a while, and it hurts bad. You've had trouble sleeping. It may be hard to bathe, to do normal chores like wash the car, or even be comfortable on the job. You may have severe arthritis in your knee, and if so there's a good chance you need a knee replacement. So, what is a knee replacement?Knee replacements are usually done in people age 60 and older. If you need one, you probably have severe arthritis that limits your daily life. During knee joint replacement, your surgeon will remove damaged cartilage and bone from the knee joint. The surgeon then puts man-made pieces, called prostheses, in their place. The lower end of the thigh bone, also called the femur, is usually replaced with a metal part. The part that replaces the upper end of the shin bone, the tibia, is usually made from metal and a strong plastic. The piece that replaces the back side of your kneecap, or patella, is usually made from a strong plastic. You shouldn't feel any pain during surgery because you will have medicine to make you fall asleep. The surgeon will make a cut over your knee to open it up. The cut is usually eight to ten inches long. Your surgeon will move your kneecap out of the way, then cut the ends of your thigh bone and shin bone to fit the replacement part. The surgeon will then cut the underside of your kneecap and prepare it for the new pieces that will attach there. The surgeon then fastens the two parts of the prosthesis to your bones (the upper end of the shin bone and the lower end of the thigh bone). Then the parts are attached to the underside of your kneecap using a special cement. The surgery usually takes a couple hours. After surgery, you will probably stay in the hospital for three to five days. As soon as the first day after surgery, you will be asked to start moving and walking around with a walker, crutches, or a cane. You will likely need physical therapy to strengthen your new joint after your operation. Some people need a short stay in a rehabilitation center after they leave the hospital. At the rehab center, you will learn how to safely do your daily activities on your own. Full recovery can take three months to a year. Your new knee should last for 15 years or maybe even 20. And in the mean time, your new knee should allow you to resume your daily activities once you have learned to move around. Most or all of your pain and stiffness should go away.

  • Knee pain

    Knee pain

    The location of knee pain can help identify the problem. Pain on the front of the knee can be due to bursitis, arthritis, or softening of the patella cartilage as in chondromalacia patella. Pain on the sides of the knee is commonly related to injuries to the collateral ligaments, arthritis, or tears to the meniscuses. Pain in the back of the knee can be caused by arthritis or cysts, known as Baker's cysts. Baker's cysts are an accumulation of joint fluid (synovial fluid) that forms behind the knee. Overall knee pain can be due to bursitis, arthritis, tears in the ligaments, osteoarthritis of the joint, or infection.

    Knee pain

    illustration

  • Runners knee

    Runners knee

    Chondromalacia causes knee tenderness, knee pain in front of the knee, and a grating sensation in the knee. The knee pain is worst after sitting for a prolonged period of time or when getting out of a chair. The knee cartilage is affected probably from overuse, trauma and/or abnormal forces on the knee, such as a misaligned patella. Chondromalacia is treated with rest or immobilization and nonsteroidal anti-inflammatory drugs for pain. Physical therapy, especially quadriceps strengthening and hamstring stretching may also be helpful. Surgery is beneficial if there is a problem with the alignment of the patella that cannot be corrected with therapy.

    Runners knee

    illustration

  • Knee joint replacement  - series

    Knee joint replacement - series

    Presentation

  • Knee arthroscopy  - series

    Knee arthroscopy - series

    Presentation


Review Date: 12/12/2022

Reviewed By: C. Benjamin Ma, MD, Professor, Chief, Sports Medicine and Shoulder Service, UCSF Department of Orthopaedic Surgery, San Francisco, CA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. No warranty of any kind, either expressed or implied, is made as to the accuracy, reliability, timeliness, or correctness of any translations made by a third-party service of the information provided herein into any other language. © 1997- A.D.A.M., a business unit of Ebix, Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

 

 

 

A.D.A.M. content is best viewed in IE9 or above, Firefox and Google Chrome browser.
Content is best viewed in IE9 or above, Firefox and Google Chrome browser.