What is revision knee replacement?
Revision knee replacement is a second operation on a knee that has already been replaced. The surgeon may exchange plastic, revise one component, revise all components, treat infection, rebuild bone, or use specialized revision implants for stability.
Common reasons include loosening, wear, infection, instability, stiffness, fracture around the implant, or bone loss.
Reasons a knee replacement may need revision
Loosening or wear
Implant fixation, plastic wear, and bone loss can create pain or instability over time.
Infection
Deep infection may require staged treatment and careful coordination with the surgical team.
Instability or stiffness
The knee may feel loose, buckle, or remain stiff because of alignment, sizing, ligament balance, scar, or other causes.
A revision knee plan is built around the failure pattern.
A painful knee replacement should not be revised until the team understands the likely cause. The workup may include X-rays, infection labs, aspiration, CT imaging, and review of prior operative records.
Common questions
Is revision always necessary?
No. Some painful knee replacements do not need surgery, and some pain comes from outside the implant.
Is revision more complex?
Usually yes. Revision may require specialized implants, bone reconstruction, infection treatment, or more constrained components.
Can stiffness be fixed?
Sometimes. The cause and timing of stiffness matter, and a specialist evaluation is needed before choosing treatment.
What records help?
Prior operative notes, implant information, old X-rays, infection labs, and treatment history can help build the plan.
Patient education references used for this page: AAOS Revision Total Knee Replacement, AAHKS Revision Knee Replacement, and AAHKS Total Knee Replacement.