Everything you need to know about Knee Replacement Surgery


Knee replacement surgery restores the weight-bearing facade of a damaged, worn, or diseased knee joint. The aim is to remove pain and restore mobility. It is also known as knee arthroplasty, or “knee resurfacing.” The surgeon caps the ends of the bones that form the knee joint with metal or plastic components, or implants a prosthetic, shaped as a joint. This enables the knee to move properly. Replacement knee surgery can help patients whose knee or knees have degenerated due to osteoarthritis, rheumatoid arthritis, or post-traumatic arthritis when an injury has damaged the knee.

What is knee replacement surgery and why is it useful?

Knee Replacement Operation

Knee replacement is a kind of arthroplasty. Arthroplasty means “the surgical repair of a joint,” and it involves the surgical reconstruction and replacement of degenerated joints, using artificial body parts, or prosthetics. When the articular cartilage of the knee becomes damaged or worn, it becomes painful and the knee is hard to move. Instead of sliding over each other, the bones rub and crush together. With a prosthesis, the patient will feel less pain, and the knee will move properly.

Why have knee replacement surgery?

There are three common reasons for the procedure:

Osteoarthritis: Caused by the normal wear and tear of the knee joint. It mostly affects patients aged over 50 years, but younger people may have it. Osteoarthritis is caused by inflammation, breakdown, and the gradual and eventual loss of cartilage in the joints. Over time, the cartilage wears down and the bones rub together.
Rheumatoid arthritis: also called inflammatory arthritis, the membrane around the knee joint to become thick and inflamed.
Post-traumatic arthritis: this type of arthritis is due to a severe knee injury. When the bones around the knee break or the ligaments tear, this will affect the knee cartilage.

Who might need knee replacement surgery?

Knee replacement may be an option when non-surgical interventions such as medication, physical therapy, and the use of a cane or other walking aid no longer help alleviate the pain. Other possible signs include aching in the joint, followed by periods of relative relief; pain after extensive use; loss of mobility; joint stiffness after periods of inactivity or rest; and/or pain that seems to increase in humid weather. Your primary care doctor may refer you to an orthopaedic surgeon who will help you determine when/if it’s time for knee surgery and which type of knee surgery is most appropriate. Your surgeon may decide that knee replacement surgery is not appropriate if you have an infection, do not have enough bone or the bone is not strong enough to support an artificial knee. Doctors generally try to delay total knee replacement for as long as possible in favour of less invasive treatments. With that being said, if you have advanced joint disease, knee replacement may offer the chance for relief from pain and a return to normal activities.

Types of knee replacement surgery

There are several kinds of replacement knee joints as well as different surgical methods. Orthopaedic Surgeon should help you to choose the best option for you, taking into account the condition of your knee and your general health. The four main types of knee replacement surgery are:

  • Total knee replacement
  • Unicompartmental (partial) knee replacement
  • Kneecap replacement (patellofemoral arthroplasty)
  • Complex or revision knee replacement.

For your queries, you can contact or visit Medisys Hospital, a growing multispeciality hospital in Hyderabad. They comprise a group of highly qualified and experienced veteran medical professionals. They offer a wide range of specialised treatments and surgical options for knee replacement surgery.


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