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Related Experiment Video

Updated: Nov 19, 2025

In Vitro Application of a Wireless Sensor in Flexion-Extension Gap Balance of Unicompartmental Knee Arthroplasty

In Vitro Application of a Wireless Sensor in Flexion-Extension Gap Balance of Unicompartmental Knee Arthroplasty

Published on: May 5, 2023

How to Quantitatively Balance a Total Knee? A Surgical Algorithm to Assure Balance and Control Alignment.

Ryan E Moore¹, Michael A Conditt², Martin W Roche³

¹Coon Joint Replacement Institute: Adventist Health, St. Helena, CA 94574, USA.

Sensors (Basel, Switzerland)

|January 27, 2021

Summary

This summary is machine-generated.

Achieving a balanced total knee replacement requires an average of three surgical corrections. Soft tissue releases and bone adjustments significantly impact knee balance and limb alignment.

Keywords:

balancing mechanical alignment soft tissue releases surgical corrections total knee arthroplasty

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Last Updated: Nov 19, 2025

In Vitro Application of a Wireless Sensor in Flexion-Extension Gap Balance of Unicompartmental Knee Arthroplasty

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Published on: May 5, 2023

Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty

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Published on: February 27, 2018

Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy

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Published on: February 17, 2023

Area of Science:

Orthopedic Surgery
Biomechanical Engineering

Background:

Total knee arthroplasty (TKA) aims for optimal knee balance and limb alignment.
Intra-operative sensors and surgical navigation offer patient-specific feedback for TKA.
This study quantifies the effects of surgical corrections on knee balance and alignment.

Discussion:

An average of three surgical corrections were needed post-bone cuts for balanced TKAs.
Specific soft tissue releases (e.g., arcuate release) and bone adjustments (e.g., tibial insert thickness) significantly alter terminal extension.
Coronal alignment is notably affected by medial collateral ligament (MCL) pie-crusting, tibial varus, arcuate ligament, and popliteus tendon releases.

Key Insights:

Each surgical correction demonstrated a distinct impact on intra-articular loads during flexion and extension.
Soft tissue adjustments play a crucial role in influencing limb alignment across both anatomical planes.
A presented surgical algorithm aids in achieving knee balance while preserving sagittal and coronal alignment.

Outlook:

Further research can refine surgical algorithms for TKA based on quantitative biomechanical data.
Understanding the precise impact of each correction can lead to improved patient outcomes and implant longevity.
Integration of advanced navigation and sensor technology can enhance precision in TKA procedures.