Blog – Fameitech

Start Your Journey to Pain-Free Living With Dr. Shohab Hyder Shaikh
+92 (333) 315-7859
What is the best Knee Replacement?

What is the best Knee Replacement?

Knee joint is the most powerful and important joint of the body, as it stabilizes the body weight and helps in locmotion. If you experience any trauma, or chronic infection like osteoarthritis, you might need a replacement from hip and knee surgeons.

The knee replacement is a surgical method of implanting a new one for the knee. This could be done by different methods, But, as orthopedic surgeons decide the replacement based on the history of the patient. Dr. Shohab Hyder, a best orthopedic surgeon in Karachi, specializes in advanced knee replacement techniques, ensuring optimal outcomes for his patients in Pakistan and you can check hip and knee surgeons in Karachi for the best treatment. To begin with basic knowledge, medications, and different replacement techniques, learn more in this blog.

What is An Artificial Knee Joint?

An artificial joint, often done by a procedure known as a total knee replacement, is a structure that replaces the original knee joint. It is often composed of various metals and plastics, with the goal of recreating the same level of mobility as an unharmed knee.

The joint’s structure is often straightforward. Metal caps replace both the thigh and shin bones, and damaged cartilage is replaced with high-density plastic. Both the tibial and femoral components are constructed of metal. Bone cement (polymethyl methacrylate) is traditionally used to hold the implant in place.

Knee Replacement

Since the first operation in 1968, doctors have significantly improved the procedure. In fact, advances in medical technology have resulted in accurate and highly effective artificial knee implants that move virtually identically to the human knee and are custom-fitted to your specific body. A total knee replacement is now one of the safest and most effective conventional orthopedic operations and choosing the right hip and knee surgeon in Karachi for the knee replacement is crucial.

Types Of Knee Replacement

1. Metal-on-plastic

It is the most common implant type. It comprises a metal femoral component and a polyethylene plastic spacer attached to the tibial component. This is the least expensive and safest implant type. However, plastic wear can cause an immune reaction, leading to bone breakdown and implant failure. Advances in manufacturing have significantly reduced plastic wear.

2. Ceramic on plastic

It is an implant that uses a ceramic femoral component instead of metal or a metal component with a ceramic coating and is supported by a plastic spacer. This type of implant is recommended for people sensitive to nickel, which is commonly used in metal implants. However, it is essential to note that plastic particles from this implant can cause an immune reaction and you can take guidance from hip and knee surgeons in Karachi.

3. Ceramic on Ceramic

The femoral and tibial components are composed entirely of ceramic, the material least likely to cause a reaction in the body. Despite this, ceramic joint implants may produce a squeaking sound when walking, and on rare occasions, they may break apart when subjected to high pressure, requiring surgical removal of the pieces.

4. Metal-on-metal

This type of implant used to be a popular choice for joint replacements from hip and knee surgeons in Karachi. However, concerns have been raised about metal traces leaking into the bloodstream, causing pain, inflammation, and even organ damage. They are now used sparingly and only considered for young, active men. Women of childbearing age can’t receive these implants due to the unknown effects on a fetus.

Most Common Type Of Knee Replacement

One of the most prevalent knee replacement procedures utilized by the general population involves the usage of a metal-on-plastic combination for the implant. This approach involves using a metal alloy, primarily cobalt-chromium, for the femoral and tibial components material, and a plastic polymer, typically polyethylene, for the cushion or spacer between them. Cobalt-chromium is preferred for its exceptional biocompatibility, which aids in its ability to resist corrosion and wear, therefore ensuring the implant’s longevity.

Polyethylene, on the other hand, is chosen for its durability and its ability to endure weight-bearing demands and movements within the joint. Hip and knee Surgeons in Karachi  take into account various factors including the patient’s anatomy, lifestyle, and activity levels when selecting the most suitable implant design. This allows them to customize the design and ensure that it caters to the specific needs of each patient. But it’s the design that truly stands out. It is not a one-size-fits-all situation. Your knee replacement is a work of art, custom-made to meet your specific needs. Surgeons use cutting-edge orthopedic technology to tailor the artificial joint to your specific anatomy, lifestyle, and preferences.


Choosing the right hip and knee surgeons in Karachi for knee replacement is a crucial decision that requires careful consideration of various personal factors. These factors include your medical history, any material allergies or sensitivities you may have, and your lifestyle requirements. The most commonly used type of knee replacement currently is the metal-on-plastic combination, which is composed of cobalt-chromium and polyethylene.

This combination is highly durable and biocompatible. Thanks to technological advancements in recent years, knee replacements have become much safer and more effective, allowing patients to achieve better mobility and a higher quality of life.

Leave a Reply

Your email address will not be published. Required fields are marked *

Top News

Populars Tags