Revision Knee Replacement

Revision knee replacement removes some or all parts of an existing artificial knee and replaces them with new components. It is done when the original implant has loosened, worn, become unstable, stiff or infected, or after a fracture around it.

It can restore a stable, less painful knee, but outcomes are less predictable than after a first replacement, the operation is longer, and complication rates are higher. Revising a knee for pain with no identified cause rarely helps, so a clear diagnosis beforehand is essential.

What Revision Knee Replacement involves

Investigation comes first: X-rays, blood markers of inflammation (CRP and ESR), and aspiration of joint fluid for cell count and culture to confirm or exclude infection; CT can assess component rotation and bone loss. At surgery the old scar is reopened, scar tissue is released and samples are sent to microbiology. Loose parts lift out readily; well-fixed ones are freed with thin saws and osteotomes to save bone. Bone defects are rebuilt using metal augments, cones or sleeves, and the new components usually carry stems that pass into the canal of the femur and tibia for support. A more constrained or hinged implant is chosen if the ligaments are inadequate. For infection, the usual plan is two stages: removal, an antibiotic-loaded cement spacer and 6 or more weeks of antibiotics, followed by reimplantation once markers normalise.

Who is a good candidate for Revision Knee Replacement?

For people with a failing knee replacement and a defined, correctable cause.

• Aseptic loosening or wear of the plastic insert seen on imaging
• Instability, where the knee gives way or swells repeatedly
• Confirmed prosthetic joint infection
• Fracture around the implant that has loosened it
• Malposition or stiffness that has not responded to physiotherapy or manipulation

It is usually not the right choice if:

• Unexplained pain with normal investigations
• Pain referred from the hip or spine, or due to nerve pain syndromes
• People whose health cannot withstand long surgery, for whom bracing or suppressive antibiotics may be considered
• Active skin ulcers or poor soft-tissue cover without a plastic surgery plan
• Expectation of a knee as good as a successful first replacement

Technique options

• Insert exchange: Only the plastic liner is changed, for isolated wear or mild instability with well-fixed parts.
• Single-stage full revision: All components replaced in one operation. Standard for aseptic failure and, in selected cases, infection.
• Two-stage revision for infection: Spacer and antibiotics between operations. The traditional benchmark for chronic infection.
• Hinged or constrained implants: When ligaments or bone stock are deficient.
• Debridement with implant retention (DAIR): Washout and liner exchange for early or acute infections.

What happens during your treatment

Surgery takes 2 to 4 hours under spinal or general anaesthetic. Blood loss is greater than in a first-time knee. Hospital stay is commonly 4 to 7 nights, and antibiotics are continued until culture results come back.

Preparing for your trip

Plan for 3 weeks for a single stage; two-stage is rarely practical for visitors in Istanbul. Your surgeon reviews photographs and your medical history before you book, and you meet in person the day before surgery for examination, marking and consent with a professional interpreter.

• Stop smoking and nicotine at least four weeks before and after surgery; it is the single biggest avoidable cause of wound problems
• Tell the team about every medicine and supplement you take; blood thinners, some herbal products and hormone treatment may need to be paused on your doctor's advice
• Arrange for someone to travel with you or to be reachable, and keep the first days at home free of work and lifting
• Book a changeable return flight; your surgeon confirms when you are fit to fly

Recovery and results

Rehabilitation is slower: expect walking aids for 6 to 12 weeks, and up to a year before the knee feels as good as it is going to. Weight-bearing may be restricted at first if bone has been reconstructed. A two-stage revision for infection extends over 3 to 4 months in total, with two operations and intravenous antibiotics; that pathway is difficult to manage abroad and is usually better done near home.

• Back to everyday activity: 6 to 12 weeks
• When results show: Steady improvement for up to 12 months
• How long they last: About 80 to 90 percent survive 10 years, lower after infection

Safety, risks and revision policy

Risks are higher than for a primary knee replacement, and you should discuss them frankly.

• Infection or re-infection, in about 5 to 10 percent or more after a septic revision
• Stiffness and reduced bend
• Ongoing pain
• Fracture of bone during implant removal
• Damage to the patellar tendon or extensor mechanism
• Wound healing problems
• Blood clots
• Re-revision; in the worst outcomes, fusion or amputation after recurrent infection

Every written proposal arranged through Clinic-Y states what the clinic covers if a correction is needed. Ask for it before you book, not after.

Cost of Revision Knee Replacement in Türkiye

Clinic-Y does not publish a single price for Revision Knee Replacement, because the honest figure depends on your case. What moves it:

• Partial or full revision, and one or two stages
• Revision implants, stems, cones and augments, which cost far more than primary components
• Length of stay, and intravenous antibiotics
• Pre-operative aspiration, CT and laboratory tests
• Extended rehabilitation

Send your photographs or reports and you receive written, all-inclusive proposals from suitable teams, side by side. Reviewing your case is free.

Frequently Asked Questions