Patient Information


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When Do You Need A Knee Implant?

Your orthopaedic surgeon will evaluate your situation carefully if you are experiencing pain or poor range of motion as a result of a diseased, damaged or deformed knee. Your surgeon will carefully make decision regarding which implant is most appropriate for you and may determine that total knee replacement is the best method of treatment when other non-surgical treatments are ineffective.

A diseased knee is when one or more parts of the knee are damaged, and movement becomes stiff. Overtime, the cartilage surrounding the bone will start to crack or wear way, causing the bones in the joint to rub together. When the cartilage continues to wear away, the joint becomes increasingly painful and difficult to move.

There are many reasons your knee may become damaged or diseased, including but not limited to:

  • Non-inflammatory arthritis such as osteoarthritis or avascular necrosis
  • Inflammatory arthritis such as rheumatoid arthritis or
  • Functional deformities

In these cases, Signature Orthopaedics knee replacement implants can be employed to replace the damaged bone and cartilage in a Total Knee Replacement (TKR).

For more details on instructions for use, please refer to the eIFU

What Is A Total Knee Replacement?

In a TKR, the damaged or diseased bone ends are removed and replaced with components designed to recreate the anatomy of the bones in a healthy knee. The metal implants are implanted on the femur and the tibia. A polyethylene component is implanted in-between allowing the bones to smoothly glide against each other, just like your natural cartilage.

How long will my implants last?

The lifetime of the Signature Orthopaedics devices are indefinite, when used in accordance with the Instructions For Use, as the prosthesis is intended to remain implanted for your lifetime.

Which implant is right for me?

Although implant surgery is extremely successful in most cases, some patients will still experience pain and stiffness. Your physician will evaluate your particular situation carefully before making any decision regarding which implant is most appropriate for and discuss all complication and risks with you prior to surgery.

Signature Orthopaedics’ knee implant range is intended for use with Signature Orthopaedics’ range of joint replacement components only. The selection of an implant of the correct size, shape, and type of bone fixation is extremely important to maximise the potential for a successful, long-term outcome for you.

Adverse Events & Risks

With any surgery, there are potential risks, and results will vary depending on the patient. Your physician will assess the risks and benefits associated with this technology, as well as individual factors such as the cause of your condition, age, height, weight and activity level. Please see the IFU for more details.

Will I return to everyday activities?

The degree to which you can perform day to day movements is based on your range of motion as shown below. A normal knee would have a range of motion up to 0 to 135 degrees of flexion (bending) and 120 to 0 degrees of extension (straightening).

The decision on your post-operative activity level is dependent on your surgeon’s recommendations and guidelines as well as your compliance with recommended post-operative therapy.

For more information, download our brochure:





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