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The Evolution of Total Knee Arthroplasty

Total Knee Replacement or TKR has turned out to be one of the most important breakthroughs in the medical field in the 20th Century. The year 1968 saw the first Knee replacement being performed. Although, the surgery was rudimentary then, much progress has been made in the years since in both surgical materials as well as the techniques used by surgeons worldwide. This has led to significant improvements in the effectiveness of the procedure.

As per a leading study, in India, senior citizens are the leading group who suffer from some sort of bone and joint disorder and are in urgent need for joint replacement. Arthritis comes up as one of the most common cause for the requirements of total knee replacement in India. Arthritis and other disorders such as osteoporosis are commonly caused due to a sedentary lifestyle which is increasing among the Indian population due to a rise in office jobs. This seems to have increased the market for joint replacements in the country. Also, an uptick in the number of trained surgeons and modern hospitals have also increased the number of patients who resort to knee replacement surgeries to cure their joint troubles.

But, the beginnings of total knee arthroplasty were much more humble. A leading German Surgeon by the name of Themistocles Gluck is often credited as the first surgeon to use artificial hinge joints made out of ivory. The next significant advancement in the field came much later in the early part of the 1950’s when, a joint made from acrylic was introduced, called the Walldius joint. Then, in the later parts of the decade, the Walldius joint begun to be manufactured from a combination of chrome and cobalt, but unfortunately, it was prone to failing soon after the surgery.

The next decade brought the much-needed advancement in the field which can be credited with inspiring the modern total knee arthroplasty procedure. A doctor named John Chamley developed a cemented metal-on-polyethylene joint which brought a revolution in the field. Then, another doctor from the same hospital named Charnley designed a better, unhinged knee joint which boasted better stability and allowed for increased movement in the joint as per the flexion of the knee.

Then subsequent and incremental changes kept happening over the next few decades. The developments in materials, design, as well as manufacturing also enabled significant improvements in the stability and movement of knee joints.

Today advancements have paved the way for highly accurate measurements and sizing which when complemented with better instrumentation have led to highly superior joints with an increased range of motion and a much more lower wear & tear rate.

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Innovation At Its Best – A Technology Beyond Perfection!

We live in the world of choices. We like things to be according to our taste. Of course, in the 21st century we have gotten used to the presence of modern technology and all the comforts it affords. It’s hard to believe, especially now, that there are certain areas where technology hasn’t caught up yet. Take the example of shoes. An ubiquitous item today, at the time of its invention customization wasn’t an option. But, today can you even imagine yourself buying a shoe without trying it on first to ensure that it fits perfectly? Of course not, unless you are buying it online but
that’s a completely different story. You would know that one size shoes can’t fit every feet. Even if the feet are of the same size, they differ in width and shape which makes checking the shoe’s fit a necessity before buying. Because of this very reason, over 25% of shoes bought online are returned as there is no way to ascertain the fit in spite of selecting the right size.

If while buying a shoe you take so much care to ensure that you get a proper fit, what happens
when it’s time to change someone’s knee for example?

Advances in medical science and technology have played a huge role in the progress of mankind.Patients today have the advantage of procedures and medicines which seemed
impossible just a couple of decades ago.

Although advanced methods to ensure that patients get as close a fit as possible exists, but are they reliable or feasible, money as well as time wise?

 

Kne3Wiz, bringing together customization and accuracy

A complete 3d solution, kne3wiz is an advanced pre-operative system designed to overcome the problems faced by existing TKR procedures like Patient Specific Instrumentation Surgery, Robotic Surgery and Computer Navigational Surgery. Based on each patient’s CT scan data, Kne3Wiz’s intelligent and sophisticated algorithm develops a detailed 3D bone model to enhance the efficiency and accuracy of the procedure. The system also uses the 3d bone model
to calculate the proper size and position of implant and uses that data to auto-select the first choice of implant from all available implant companies. Using 3d models of the selected implant and the bone, the system determines the best position of the implant and assists the surgeon in delivering unmatched precision.

Tackling the two main problems associated with TKR, KNE3WIZ helps in finding the most optimal position and size of the right implant. This is more or less because of the 3D capabilities of the system. Once, the patient undergoes a pre-op CT scan, the DICOM files are loaded onto a dedicated system to develop a highly accurate bone model, accurate up to 1mm. The registration process on a CT scan is very simple and precise and is done with the help of 3
axis views: Coronal, Sagittal & Axial to ensure maximum precision and reproducibility in the shortest timespan.

Kne3Wiz Advantages

  • 3d technology to enable the surgeon to make the best decision as per the specific anatomy of each patient.
  • Patient gets an implant according to his specific bone shape and size.
  • Saves time and cost for the patient compared to other TKR surgeries
  • Superior performance for potentially higher success rates
  • Higher patient satisfaction
  • Reduces the time required for the surgery, thus there are less chances of infection.
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