knee replacement prostheses

What isTotal Knee Replacement?

A total knee replacement (TKR) or total knee arthroplasty is an operation to replace a knee joint that is affected by arthritis.

Total Knee Replacement surgery replaces the arthritic knee joint with artificial metal or plastic replacement parts called the ‘prostheses’. These include replacing the:

End of the tibia (shin bone)
End of the femur (thigh bone)
Usually the patella (knee cap)
Plastic inserted between them

The artificial knee joint is made from surgical-grade metal alloy and wear-resistant plastic. Total Knee Replacement has a high success rate, with over 90% still functioning well at 15 years. Prior to surgery, conservative treatments are usually tried, and if they fail, surgery is considered.

Who are Candidates for Total Knee Replacement?

The procedure is usually recommended for older patients who suffer from pain and loss of function from arthritis and have failed results from other conservative methods of therapy.Total Knee Replacement candidacy is assessed individually, and it is more common than partial knee replacement.

Candidates can include:

A classic history with location of pain and exacerbating factors

Have restricted mobility that is interfering with their lifestyle

What are the Benefits of Total Knee Replacement Surgery?

The decision to proceed with TKR surgery is a cooperative one between you, Dr Bradley Seeto, family and other medical professionals. The benefits following surgery are the relief of symptoms of arthritis.

These include:

Swelling illustrationSwelling
knee Pain illustrationPain waking you at night
Deformity- either bowleg or knock knees illustrationDeformity- either bowleg or knock knees
knee Pain illustrationSevere pain that limits your everyday activities

The benefits are that older patients or severely arthritic patients have a clear solution to help relieve symptoms and pain.

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An upper metal component
Shaped and sized to fit the end of the femur
A patellar button
Which resurfaces the back of your knee cap
A plastic insert
Designed to bear significant wear
A flat metal tibial component
Made of metal alloys fixed to the bone

About Total Knee Replacement Procedure

The procedure is designed to be performed with minimal local trauma


The knee joint is exposed using a minimally invasive approach


The patella (kneecap) will be resurfaced in most cases. 80% of the natural kneecap is retained


Trial components are inserted to check the accuracy of the cuts and determine the required plastic thickness between them.


The damaged portions of the femur and tibia are then cut at the appropriate angles using a high tech intra-operative computerised navigation system


The real components are then inserted with or without cement and the knee is again checked for implant fit, alignment and stability


The knee is then carefully closed with dissolving sutures and skin glue. Sterile waterproof dressings and a compression bandage are applied.

Each knee is individual and knee replacements take this into account by having different sizes for your knee. If there is more than the usual amount of bone loss, sometimes extra pieces of metal or bone are added. Custom implants are occasionally required.

What are the Preparations Prior to Knee Replacement Surgery?

Once it is decided that surgery is required, preparation is necessary to achieve the best results and a quick and problem free recovery.

Preparing mentally and physically for surgery important for a successful result.

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    A treatment plan will be created specifically tailored for you. I will need a complete list of your medications so that I can advise which ones should be stopped prior to surgery
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    The admitting hospital will advise you of the fasting time and your arrival time on the day before surgery
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    Do not eat or drink anything, including water, for 6 hours before surgery
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    Stop taking aspirin, or other anti-inflammatory medications or drugs that increase the risk of bleeding one week before surgery
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    Stop or cut down smoking to reduce your surgery risks and improve your recovery
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    Eat a well-balanced diet, supplemented by a daily multivitamin with iron
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    Consider losing weight (if overweight) before surgery to help decrease the stress on the new joint
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    Treat any tooth, gum, bladder or bowel problems before surgery to reduce the risk of infection

Risks of Knee Surgery

As with any major operation, knee replacement surgery has potential risks and complications. Surgical complications may include:



Dr Seeto’s incidence of infection is 1:1000






Ongoing pain


Blood clots in the leg (DVT) or lung (Pulmonary embolus)

Please discuss with me any concerns you may have before any procedure.

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After Your
Replacement Surgery

After your operation, you will have a drip in your arm for pain medication and antibiotics.You may need between 3-5 nights in the hospital, followed by a stay in a rehabilitation facility.

Crutches are required for 1 – 2 weeks following the replacement.

Going Home After Replacement Surgery

Remember to arrange for someone to take you home, as driving is not recommended for several weeks following knee replacement.

Going Home After Replacement Surgery

You may return to light work duties after 3-4 weeks. You will not be fit to perform work duties that involve:

Excessive stair climbing
Prolonged standing
Heavy lifting
Recovery Plan Illustration

Post Op Recovery Plan

My Total Knee Replacement Rapid Recovery Plan will assist you in recovering from surgery in the shortest time frame possible and should assist in the long term function of your new knee.

Recovery from Knee Surgery will usually take about 3 months, and you can expect the knee to improve for 12 – 18 months.
The physiotherapist will prepare an exercise programme. Much of the exercise programme can be done at home or at a gym, under your physiotherapist’s guidance.

Total Knee Replacement Rapid Recovery Plan

A structured plan to assist you to recover from a knee replacement in the shortest possible time and to improve the long term function of your new knee


  • Quadriceps strengthening exercises using weights or resisted cycling
  • Intra-operative:
  • Minimally invasive tissue-sparing surgical technique
  • Computer-assisted surgical navigation to ensure optimal implant positioning and alignment
  • Limited tourniquet use to minimize tissue ischaemia
  • Carefully placed injections of long-acting local anaesthetic into the joint capsule for post-operative pain relief
  • Use of IV to locally minimise bleeding into the knee post-surgery

Proven medication plan for post-op comfort and early mobilization.

  • Use of the continuous passive motion machine post-operatively
  • Use of the ‘Game Ready’ ice and compression machine post-operatively
  • Use of an IV anti-inflammatory medication and local corticosteroids as indicated to assist with pain relief and recovery
  • Early mobilization and full weight bearing
  • Early transfer to a rehabilitation facility for more intensive physiotherapy
  • Early hydrotherapy
Knee background

Do you need a

Knee replacement?

Dr Seeto in affiliation with Medibank Private and East Sydney Private hospital, offers a program for eligible Medibank Private Members, to eliminate medical out of pocket costs for your Knee Replacement.

The program includes a pre-surgery preparation program, spending the minimal time necessary in hospital, as well as home rehabilitation if necessary.


Out Of Pocket

Knee operation

Book a consultation


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