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What Is The Medical Term For Knee Replacement

Similar Conditions That Affect The Knee

Total Knee Replacement Surgery (Arthroplasty) – University of Vermont Medical Center, Vermont

Meniscus tear

Sometimes patients with knee pain don’t have arthritis at all. Each knee has two rings of cartilage called “menisci” . The menisci work similarly to shock absorbers in a car.

Menisci may be torn acutely in a fall or as the result of other trauma or they may develop degenerative tears from wear-and-tear over many years. Patients with meniscus tears experience pain along the inside or outside of the knee. Sometimes the pain is worse with deep squatting or twisting. Popping and locking of the knee are also occasional symptoms of meniscus tears.

Since some of these symptoms may be present with arthritis and the treatment of arthritis is different from that of meniscus tears, it is important to make the correct diagnosis. A good orthopedic surgeon can distinguish the two conditions by taking a thorough history, performing a careful physical examination, and by obtaining imaging tests. X-rays and Magnetic Resonance Imaging scans may be helpful in distinguishing these two conditions.

Knee Joint Infections

Also called infectious arthritis or septic arthritis, a joint infection is a severe problem that requires emergent medical attention. If not treated promptly knee infections can cause rapid destruction of the joint. In the worst cases they can become life-threatening.Symptoms of a knee joint infection include:

  • severe pain
  • fevers and

Again, a joint infection is a serious condition that requires immediate medical attention.

A Realistic Assessment Of What We Can Do To Help With Your Pain After Knee Replacement

In our clinic, we try to provide information on helping people explore other treatment options before joint replacement. One of those options is simple dextrose Prolotherapy. This regenerative injection technique helps rebuild damaged ligaments and tendons.

When the patients have already had a joint replacement, we will do a physical examination of the knee to assess how we may be able to help.

  • Prolotherapy fixes soft tissue, it cannot fix hardware failure,
  • Prolotherapy works by stabilizes the knee by strengthening the natural muscle and bone attachments, ligaments, and tendons.

The Basics: The Different Types Of Replacements

Total Knee Replacement or Total Knee Arthroplasty

First of all, to clear up any confusion, it must be known that a total knee replacement and total knee arthroplasty are the exact same thing. Basically, knee arthroplasty is just the fancy pants version of knee replacement. Got it? Okay, good. Now you can confidently use both terms interchangeably. In a total knee replacement all of the damaged bone and cartilage is removed and resurfaced. The healthy bone is left intact to support the new artificial joint. The artificial joint is made up of as many as three different parts. Read about the many different types of artificial knee replacement components now!

Partial Knee Replacement or Unicompartmental Knee Arthroplasty

Once again, a partial knee replacement is just the more common street name for unicompartmental knee replacement . Theyre one in the same. As the name suggests, a partial knee replacement is when one or more parts of the knee joint are replaced. The difference between a total and partial is that in a partial, the healthy parts of the knee joint are left as-is. Only about 10% of joint replacements are partial, with the overall preference to just do the whole kit and kaboodle. Heres whats really involved in a total and partial knee replacement.

Minimally Invasive Knee Replacement

Total Hip Replacement

Direct Anterior Hip Replacement

Bilateral Hip & Knee Replacement or a Double Hip Replacement & Double Knee Replacement

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What Does It All Mean Joint Replacement Acronyms And Definitions

Feb 3, 2017 | Patient

Like most things medical, understanding all of the words and terms associated with joint replacement is confusing. Reading through medical forums or listening to your doctor can feel like riding a bus in foreign country: youre only guessing what everyone is talking about. On a vacation nodding along is totally fine, but when it comes to an upcoming hip replacement or knee replacement, its critical that you become more involved in the conversation.

In this post, well crack the code on the many short forms, acronyms, abbreviations and tough-to-understand concepts associated with a hip or knee replacement. Getting better acquainted with the basics will give you full access to understanding what your doctor and peers are really talking about, allow you to ask better questions, and let you confidently lend your newfound expertise to other joint replacement newbies.

Read on as we answer questions like: What is the meaning of arthroplasty? Is there a difference between a joint replacement and arthroplasty? What does THR mean? And more.

When A Knee Replacement Is Needed

What to Expect After Knee Replacement

The usual reason that someone has a knee replacement is because they have very painful arthritis in their knee.

You should always bear in mind that a knee replacement is a major operation and you should really only be considering it when you have run out of other options. A doctor can tell you that you have arthritis in your knee and they can tell you that you could have a knee replacement but only you can decide if the time is right for you. Most people who decide to have a knee replacement are already taking painkillers every day but are still not able to walk far and need to use a stick.

Looking at all of the research on knee replacements , it would seem that the people who do best after a knee replacement are the ones with severe arthritis but not so bad that the joint is completely destroyed. This could be because it’s really important to have strong muscles around the knee in order to make the best recovery and people who have the most advanced disease tend to have very weak leg muscles.

Symptoms will often vary from day to day for no apparent reason. This is really common. Some people think their symptoms vary according to the weather or according to how much they have been doing – but it can be completely random.

Sometimes you will be aware of a grating or grinding feeling coming from your knee. This is called crepitus. On its own this does not necessarily indicate a serious problem with your knee.

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Common And Serious Complications Of Knee Replacement

While knee implants give many recipients a second chance at walking and living a more normal life, complications do occur.

Most problematic is a loosening of the implant, which can be caused by a defective implant or poor positioning at the time of surgery. Implant loosening is a primary cause for revision surgery.

Although rare, metallosis is possible after knee replacement surgery. Metallosis, also known as metal poisoning, can occur when metal implant pieces rub against each other and release tiny metal particles into the knee joint and bloodstream.

Common complications from knee surgery include:

  • Swelling and stiffness
  • Centers for Disease Control and Prevention. . Arthritis-Related Statistics. Retrieved from
  • American Academy of Orthopaedic Surgeons. . Total Knee Replacement. Retrieved from
  • Orthogate. . Revision Arthroplasty of the Knee. Retrieved from
  • Bonesmart. . Reasons for Knee Replacement Surgery. Retrieved from
  • American Academy of Orthopaedic Surgeons. . Knee Replacement Implants. Retrieved from
  • Your Practice Online. Revision Knee Replacement. Retrieved from
  • Ial Knee Replacement Overview

    A is also known as unicompartmental knee arthroplasty or unicondylar knee arthroplasty. In this surgery, damaged cartilage and bone are removed and replaced only in one diseased compartment of the knee. This differs from a total knee replacement, in which bone and cartilage from the entire joint are replaced.

    Partial knee replacement is suitable for people who experience arthritis only in one compartment of the knee joint, rather than throughout the joint. It can also provide relief from pain and stiffness in some people who have medical conditions that make them poor candidates for total knee replacement surgery.

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    Knee Replacement Recovery Timeline

    Knee replacement recovery begins before your surgery. You will have a rehab programme to work on which you can actually start before your operation to get your muscles in the best shape possible which will really help. The people who make the best total knee replacement recovery are the ones who start the rehab process before their operation.

    Here, we will look at total knee replacement recovery time, what is involved and how long it usually takes to get back to things. If are having or have had only one side of your knee replaced, visit the partial knee replacement recovery time section instead to found out how it will be for you.

    Balance Fitness And Safety

    Medical Mondays: Total Knee Replacement | UPMC

    At discharge and subsequent appointments, youll be given specific instructions about activities you can and cant do. Ensuring that youre still getting some exercise while recovering, while also making sure not to hurt yourself is key.

    Your surgeon and physical therapist will provide you with instructions about activity limitations and exercises. It’s important that you keep up with the exercises they recommendthat said, if anything feels off or becomes painful, let your healthcare provider know as soon as possible.

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    The Above Policy Is Based On The Following References:

  • Al-Hadithy N, Patel R, Navadgi B, et al. Mid-term results of the FPV patellofemoral joint replacement. Knee. 2014 21:138-141.
  • Alshryda S, Sarda P, Sukeik M, et al. Tranexamic acid in total knee replacement: A systematic review and meta-analysis. J Bone Joint Surg Br. 2011 93:1577-1585.
  • Alvand A, Khan T, Jenkins C, et al. The impact of patient-specific instrumentation on unicompartmental knee arthroplasty: A prospective randomised controlled study. Knee Surg Sports Traumatol Arthrosc. 2018 26:1662-1670.
  • American Academy of Orthopaedic Surgeons . AAOS clinical guideline on osteoarthritis of the knee . Rosemount, IL: AAOS 2003.
  • American College of Rheumatology Subcommittee on Osteoarthritis Guidelines. Recommendations for the medical management of osteoarthritis of the hip and knee: 2000 update. Arthritis Rheum. 2000 43:1905-1915.
  • Arbab D, Reimann P, Brucker M, et al. Alignment in total knee arthroplasty – A comparison of patient-specific implants with the conventional technique. Knee. 2018 25:882-887.
  • Argenson JN, Parratte S, Flecher X, Aubaniac JM. Unicompartmental knee arthroplasty: Technique through a mini-incision. Clin Orthop Relat Res. 2007 464:32-36.
  • Asakawa K, Spry C. Unicompartmental knee arthroplasty : A review of the clinical and cost- effectiveness and guidelines for use. Health Technology Inquiry Service . Ottawa, ON: Canadian Agency for Drugs and Technologies in Health August 8, 2008.
  • What Can I Expect At Hss

    Hospital for Special Surgery has been at the forefront of modern knee replacement since the operation was first introduced in the late 1960s. We have led the field ever since in a number of ways:

    • : HSS has been ranked the No. 1 hospital for orthopedics by U.S. News & World Report for 11 years straight.
    • Along with high rankings in patient satisfaction, HSS performs the most knee replacements with the lowest reported infection rates in the United States.
    • Research and advancement: Smaller incisions, new implant materials and design, and sophisticated instrumentation have been â and continue to be â the areas of expertise of the hip and knee replacement surgeons of the HSS .
    • HSS routinely uses the latest surgical techniques and technology, such as robotic-assisted and computer-assisted surgery.
    • : Isolating the anesthesia to a particular body area helps avoid the potential problems that may accompany a general anesthetic. These techniques have been developed and refined by the HSS . Learn more about

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    Knee Replacement Recovery Tips

    Here’s some top tips for four common questions about total knee replacement recovery time:

  • How Long Does The Pain Last? Many people find they have less pain after their knee replacement as the arthritis pain is no longer there. The post-op pain usually settles down within 6-12 weeks although their may be some residual pain and swelling for up to a year
  • How Do I Sleep After A Knee Replacement? Typically people find it most comfy to sleep on a firm mattress, either lying on their back or on their side with a pillow between their legs
  • Can I Kneel Down With My Knee Replacement? Yes you can although it may be uncomfortable in which case use a cushion or knee pad. Kneeling won’t cause any damage to the knee replacement
  • How Do I Make the Best Recovery? In order to make the best knee replacement recovery, follow all the advice from your doctor and physical therapist. Start exercises prior to surgery, get up and about as soon as possible, stick to your rehab programme, take medications reguarly when advised and keep going. There may be ups and downs along the way, but stay focused and positive
  • You can find the answers to loads more similar questions in the total knee replacement recovery questions section.

    Who Gets Knee Replacement Surgery

    Knee Prosthesis

    You may consider knee replacement surgery if:

    • Arthritis in the knee or a knee injury has severely damaged the mating surfaces of the joint.
    • Pain and stiffness give you trouble doing everyday activities, such as walking up or down stairs or getting in and out of a car.
    • Swelling and inflammation dont go away with rest and medication.Your knee is deformed, such as looking swollen or not shaped normally.

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    Wearing Out Of Implants

    Knee implants don’t last forever, but the goal should be for the knee replacement to last your lifetime. Unfortunately, not every implant lasts a patient’s lifetime, and in these cases, a second knee replacement called a revision knee replacement, may be necessary.

    Knee replacements are wearing out more commonly as younger, more active patients are seeking this as a treatment for their knee pain. With these patients, the stress and demands placed on a knee replacement are higher, and there is more of a chance of further surgery being necessary.

    There is significant controversy about what activities should be performed by patients who have a knee replacement. It is known that some strenuous activities, including impact sports, skiing, and even golf, can create stress on the implants that may lead to early failure of the implanted joint. While many patients do these activities, there is some good evidence that this may lead to faster wearing on the implanted knee joint.

    How Long Does A Knee Replacement Last

    Knee replacement implants are expected to function for at least 15 to 20 years in 85% to 90% of patients. However, the implants do not last forever.

    After a period of 15 to 20 years, general wear and tear may loosen the implant. Depending on the patient, this may cause no symptoms, or it may cause any of the following:

    • pain
    • knee instability
    • infection

    When these symptoms arise, orthopedic surgeons recommend having to replace the original implant. Infection, especially, requires a prompt revision surgery. Infection after knee replacement surgery is rare, but a knee replacement implant cannot defend itself from infection if bacteria are introduced to the body. Learn more about the at HSS.

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    Posterior Cruciate Ligament Substituting

    This design replaces ligament with plastic components. It is recommended primarily for patients with severely damaged knees or weak ligaments. Also used in revision surgery.

    It is indicated for patients with severe knee deformities or who have had previous knee replacement surgery or have had a knee cap removed.

    The PLC substituting design has a tall post attached to the tibia which fits into a deep box attached to the femur. The two are not connected with any kind of hinge joint. A polyethylene bearing attaches to the tibial component.

    A 2016 study of the PLC substituting design found that 88.5 percent of PLC substituting implants used in initial knee replacement surgery survived 10 years. For revision surgery, the 10 year survival rate was 75.8 percent if the revision surgery was due to some cause other than infection, and 54.6 percent if revision was due to infection.

    Prophylactic Use Of Tranexamic Acid In Total Knee Arthroplasty

    Knee Replacement Surgery | What to Expect

    Alshryda et al carried out a systematic review and meta-analysis of randomized controlled trials evaluating the effect of tranexamic acid upon blood loss and transfusion in primary total knee replacement . The review used the generic evaluation tool designed by the Cochrane Bone, Joint and Muscle Trauma Group. A total of 19 trials were eligible: 18 used intravenous administration, 1 also evaluated oral dosing and 1 trial evaluated topical use. TXA led to a significant reduction in the proportion of patients requiring blood transfusion 2.56, 95 % confidence interval : 2.1 to 3.1, p < 0.001 heterogeneity I = 75 % 14 trials, 824 patients). Using TXA also reduced total blood loss by a mean of 591 ml = 78 % 9 trials, 763 patients). The clinical interpretation of these findings was limited by substantial heterogeneity. However, subgroup analysis of high-dose TXA showed a plausible consistent reduction in blood transfusion requirements = 0 %), a finding that should be confirmed by a further well-designed trial. The authors concluded that the current evidence from trials did not support an increased risk of deep-vein thrombosis or pulmonary embolism due to TXA administration.

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    How Do I Manage Pain During My Recovery

    You should consider a number of options for pain relief following knee surgery. These options should be discussed with a pain management specialist, who can explain the pros and cons of each option or combination of options, including effectiveness, potential side effects, potential for addiction, and impact on the recovery process. Physician anesthesiologists who specialize in pain management can work with you before and after surgery on a plan tailored to your condition, personal history, and preferences.

    Some of the options to consider and discuss are:

    • Analgesics such as acetaminophen . These act solely to relieve pain.
    • Anti-inflammatory medicines like aspirin, ibuprofen, and naproxen sodium. These act to relieve pain and reduce inflammation.
    • Peripheral nerve blocks. These involve the injection of an anesthetic into specific nerves to block pain signals between the brain and the knee.
    • Opioids. These drugs, which block pain signals to the brain, are sometimes necessary to relieve severe or persistent pain, but patients should take them only as needed and use as low a dose as possible. Monitoring by a pain management specialist is important because opioids can be addictive.
    • Multimodal therapy. This is commonly used for pain management after knee replacement surgery and typically involves opioids and one or more additional pain relief methods. Multimodal therapy can improve pain control while limiting opioid use.

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