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Related Experiment Video

Updated: Jan 30, 2026

In Vitro Application of a Wireless Sensor in Flexion-Extension Gap Balance of Unicompartmental Knee Arthroplasty
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What is a balanced knee replacement?

Lucy C Walker1, Nick D Clement1, Kanishka M Ghosh1

  • 1Freeman Hospital, Newcastle-upon-Tyne Hospitals NHS Foundation Trust, UK.

EFORT Open Reviews
|January 31, 2019
PubMed
Summary
This summary is machine-generated.

Achieving balance in total knee arthroplasty (TKA) is crucial for patient satisfaction, yet current methods are debated. This review questions the definition of a balanced TKA and its relationship to the native knee.

Keywords:
measured resectionpatient outcomessoft tissue balancingtotal knee arthroplasty (TKA)

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Area of Science:

  • Orthopedic Surgery
  • Biomechanical Engineering

Background:

  • An estimated 20% of patients are unsatisfied after total knee arthroplasty (TKA) due to multifactorial reasons.
  • Soft tissue imbalance is a primary contributor to TKA revision causes such as instability, stiffness, and aseptic loosening.

Purpose of the Study:

  • To review current evidence on total knee arthroplasty (TKA) balancing.
  • To explore the relationship between TKA balancing and the native knee's biomechanics.

Main Methods:

  • Literature review of existing studies on TKA balancing.
  • Analysis of biomechanical principles and definitions of knee balance.

Main Results:

  • There is ongoing debate regarding the optimal method for achieving TKA balance.
  • The native knee is not symmetrically balanced, challenging the translation of native knee models to TKA.
  • Current TKA design focuses on symmetrical balance, which may not reflect natural knee function.

Conclusions:

  • The definition of a 'balanced' TKA remains unclear.
  • Replicating native knee biomechanics in TKA presents significant challenges.
  • Further research is needed to define and achieve optimal TKA balance for improved patient outcomes.