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Cementless total knee arthroplasty uses a special kind of knee implant, also called press-fit implant, that is fixed to the bone without the use of bone cement. The cementless knee implants have a porous surface with specific holes and are attached to the bones with screws. As time progresses, the bone cells grow into the implant. The bone-metal interface becomes a single healed unit as a result of biologic fixation.
Cementless total knee arthroplasty is recommended only after non-surgical approaches such as medications, exercise, steroid injections, weight control, and lifestyle modifications are unsuccessful in relieving symptoms of arthritis and other related joint problems such as pain, weakness, and instability.
Indications for cementless total knee arthroplasty surgery include:
Cementless total knee arthroplasty IS NOT recommended for people with poor bone quality due to:
In general, preoperative preparation for a cementless total knee arthroplasty will involve the following:
Cementless total knee arthroplasty is performed under general anesthesia.
Post-surgery, you will be monitored and discharged after 1 to 3 days. In some cases, patients may be discharged on the day of surgery. Post-operative imaging tests are usually ordered to determine the success of your knee surgery.
You should visit your specialist for regular follow-ups to ensure a smooth recovery.
Traditional knee replacements use bone cement. The drawback of using bone cement is that it can loosen over time, especially if you are involved in extensive physical activities. Thus, performing a cementless total knee arthroplasty has the following advantages:
Cementless total knee arthroplasty is a relatively new technique when compared to cemented total knee arthroplasty. Hence, there is lesser evidence to support the long-term effectiveness of cementless implants. Some of the challenges or drawbacks may include:
