What are the Types of Knee Replacement?

Among many orthopedic procedures often performed today, knee replacement surgery performs the majority. This surgery helps to cure millions of people suffering from arthritis, injury, or degeneration in their knees. Did you know that several types exist for knee replacement operations? Various factors determine which operation is chosen, including age, level of activity, and extent of joint damage.

This blog post will discuss the various types of knee replacement surgeries, helping you decide what is best for you or your loved one.

What is Knee Replacement Surgery?

Knee replacement surgery entails removing a damaged or worn-out knee joint and replacing it with a man-made joint called a prosthesis. These prostheses are typically made from metal, plastic, or sometimes ceramics. On the other hand, gait restoration means removing pain and improving movement or quality of life.

Types of Knee Replacement

There are different approaches to knee replacement, not just a single one. The surgery may include different parts of the body, such as knees, and various types of artificial materials for prosthesis. Common types of knee replacements are given below:

1. Total Knee Replacement (TKR)

It is one of the most common knee surgeries experienced by individuals. The surgery is performed so that the thighbone or femur, together with the shinbone (tibia) forming up the knee joint, are cut off by a surgeon. As a result, there appears to be an artificial knee with metal and plastic resembling normal movements in the place of the removed parts.

Ideal Candidates:

• People who have advanced osteoarthritis, rheumatoid arthritis (RA), or post-traumatic arthritis (PTOA);
• People with unbearable pain make it difficult, if not impossible, to carry out daily routines.

Benefits:

• Significant relief from pain and suffering;
• Enhanced mobility and balance in limbs;
• Lasting solution (patients can stay up to twenty years without experiencing negative changes).

Recovery: Normally, patients require 6-12 weeks for full recovery, including physical therapy, due to factors like age, among others, which must be taken into account by medical personnel or family members.

2. Partial Knee Replacement (PKR)

Unicompartmental knee replacement is a partial knee replacement (PKR) procedure because it includes just some parts of the knee, mainly either the medial or lateral side or alongside the kneecap (patellofemoral). Unlike total knee replacement surgery, it varies in how minimal tissue removal occurs, so only what was damaged is being replaced this time.

Ideal Candidates:

• People having arthritis or injury affecting only one part of their knees;
• Patients should properly motion at other parts of their joints, not only in this affected zone.

Benefits:

• Faster recovery time
• It conserves body tissues when compared to total knee replacement;
• Preserved knee ligaments and natural knee movement

Recovery: Depending on its degree, recovery time is relatively shorter, and patients can return to normal functions within four to six weeks after the procedure.

3. Patellofemoral Knee Replacement

This is where only the part causing problems in the patellofemoral joint, which is at the front of your kneecap (patella), would be changed, allowing for immediate relief from pain at various specific points like arthritis elsewhere.

Ideal Candidates:

• People with extensive defects are limited to the kneecap without affection for the whole knee.
• People who suffer from arthritis localized within the patella.

Benefits:

• Its minimally invasive nature compared to total knee replacement
• The preservation of more natural tissues and bones.
• It can provide excellent pain relief for specific knee issues

Recovery: Most patients recover after 4-6 weeks before returning to their normal duties since it is less involved compared to total knee replacement surgery, which may take longer.

4. Bilateral Knee Replacement

Bilateral knee replacement refers to when both knees are replaced at once. It can be a simultaneous procedure, known as simultaneous bilateral knee replacement (SBKR), in which both knees undergo replacement during one operation, or a staged procedure. In this scenario, a patient has one knee replaced; the second one is done later, after a period of months.

Ideal Candidates:

• This is specifically for those who need both of their knees changed, maybe due to arthritis or joint degeneration;
• People who are relatively healthy and can handle a more complex operation.

Benefits:

• Having just one recovery rather than two;
• Immediate improvement in both knees;
• A shorter overall time for rehabilitation compares to having them separately done.

Recovery: Recovery from single knee replacement surgery is difficult since both knees must undergo a healing process simultaneously; however, it may take up to three months to fully recover.

5. Computer-Assisted Knee Replacement

Computer-assisted knee replacement (sometimes called robotic knee surgery) is an advanced method that helps guide surgeons through more accurate placement of the affected joints. Technological advancements in this field, including computer-assisted or robot-driven knee surgeries, seem to make the possibility of having a well-balanced and more complex knee seem closer now.

Ideal Candidates:

• Patients who wish to use advanced computer technology in their knee surgeries.
• Those patients need an extensive or difficult-to-repair knee deformity.

Benefits:

• The improved positioning accuracy for the implant
• Possible increased pace of recovery
• Reduced rates of postoperative wound infection

Recovery: The outcomes are generally quicker than those of other techniques, leading to faster patient recovery following this operation.

6. Revision Knee Replacement

Revision knee replacement refers to follow-up surgery after a previous knee replacement has failed. Such failure may be occasioned by loosening, wearing away, infection, or other complications associated with previous knee replacements. In such an instance, a surgeon removes an old prosthesis and inserts a new one.

Ideal Candidates:

• This replacement is for patients who have experienced a loose implant following a first knee replacement, usually within 10-20 years.
• People with pain, instability, or trouble from an earlier knee replacement.

Benefits:

• It restores motion and alleviates suffering caused by an earlier knee implant failure.
• Also, it targets correcting particular issues in the original knee replacement surgery.

Recovery: Revision knee replacement always tends to be more involving and longer in terms of recovery than what is needed for first-time knee replacements; hence, full recovery would require three to six months

Final Thoughts on the Types of Knee Replacement

The right type of knee replacement depends on many factors, such as how badly your knee has been hurt before, how old you are, and whether you are fit enough and healthy overall. It is best to visit an orthopedic surgeon and let them know which kind of knee replacement would be most useful in your case.

No matter whether a full or partial knee prosthesis is being discussed, the key is always to try to restore movement to limbs, reduce pain, and make life more comfortable. Considering the progress made in surgical procedures and technological advancements, victims have more options, leading to better results.

If you or a loved one suffers from knee pain, it’s important to explore all your options and discuss the best treatment plan with your doctor. The right knee replacement could be life-changing!

Prepared by the Medical Editorial Board. Our health library contents have been prepared for informational purposes only and with the scientific content on the registration date. For all your questions, concerns, diagnosis or treatment about your health, please consult your doctor or health institution.