Is Partial Knee Replacement Worth It Before a Total?
For single-compartment arthritis, UKA is the right primary operation — not a delaying tactic.
It's a common misconception that a partial knee replacement is a 'stop-gap' before total replacement. When the indication is correct — single-compartment arthritis, intact ligaments, correctable deformity — UKA is the definitive operation, not a delay.
Modern UKA implants have 10-year survival rates above 92% in registry data, and revision to a total knee replacement, if ever needed, is a straightforward operation with outcomes similar to a primary TKR. You don't 'use up' your knee by having a partial first.
What you gain by choosing UKA when you qualify is better function, faster recovery and a more natural-feeling knee for what is often 15–20 years of normal use. That is worth a great deal more than waiting for the knee to deteriorate enough to 'justify' a total replacement.
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