What question did this study set out to answer?

The aim is to compare safety and functional outcomes between bilateral and unilateral total knee arthroplasty.

February 14, 2026The Journal of Arthroplasty1 citationsOpen Access

Bilateral Versus Unilateral Total Knee Arthroplasty: A Systematic Review and Meta-Analysis of Safety and Functional Outcomes

HSHussayn ShinwariSt George's, University of London HSHanan Taimur ShinwariSt George's, University of London ZMZakariya MouyerSt George's, University of London

Key Points

The aim is to compare safety and functional outcomes between bilateral and unilateral total knee arthroplasty.
Conducted a systematic review
Performed a meta-analysis
Investigated length of stay and complications
Assessed range of motion and quality of life
Bilateral total knee arthroplasty is linked to more complications
Bilateral procedures result in a longer length of stay
Functional outcomes are similar between both approaches
Quality of life measures are comparable for both groups

Abstract

Compared with UTKA, SBTKA is associated with a higher risk of complications and a longer LOS, while functional outcomes, range of motion, and health-related quality of life appear comparable between the two groups. Further high-quality studies are needed to clarify long-term outcomes and guide patient selection.

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