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Related Experiment Video

Updated: Apr 23, 2026

In Vitro Application of a Wireless Sensor in Flexion-Extension Gap Balance of Unicompartmental Knee Arthroplasty
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Increased satisfaction after total knee replacement using sensor-guided technology.

K A Gustke1, G J Golladay2, M W Roche3

  • 1University of South Florida College of Medicine, Florida Orthopaedic Institute, Department of Orthopaedic Surgery, 13030 Telecom Parkway North, Temple Terrace, Florida 33637, USA.

The Bone & Joint Journal
|October 3, 2014
PubMed
Summary
This summary is machine-generated.

Patient satisfaction after total knee replacement (TKR) is significantly higher when intra-operative sensors ensure soft-tissue balance. This study found balanced TKRs led to 96.7% satisfaction, surpassing previous research.

Keywords:
Increased patient satisfactionIntra-operative sensorsOne-year follow-upSoft-tissue balanceTotal Knee Replacement

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Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering
  • Patient Outcomes Research

Background:

  • Total knee replacement (TKR) is a common procedure to alleviate knee pain and improve function.
  • Patient satisfaction is a critical outcome measure following TKR, but historical satisfaction rates vary.
  • Intra-operative assessment of soft-tissue balance is crucial for successful TKR outcomes.

Purpose of the Study:

  • To evaluate patient satisfaction following TKR using intra-operative sensors to quantify soft-tissue balance.
  • To compare satisfaction levels between knees with balanced and unbalanced soft tissues.
  • To benchmark satisfaction results against existing literature.

Main Methods:

  • Prospective, multicentre study involving 135 patients undergoing TKR.
  • Intra-operative sensors used to objectively measure soft-tissue balance during TKR.
  • Patient satisfaction assessed one year post-operatively using a standardized scale.

Main Results:

  • 18% of TKRs were identified as having unbalanced soft tissues based on sensor data.
  • Patient satisfaction was significantly higher in the balanced TKR group (96.7%) compared to the unbalanced group (82.1%) (p = 0.043).
  • The satisfaction rate in the balanced TKR group exceeded that reported in previous literature.

Conclusions:

  • Intra-operative sensors can effectively quantify soft-tissue balance during TKR.
  • Achieving soft-tissue balance during TKR is associated with significantly improved patient satisfaction.
  • Utilizing intra-operative sensors to ensure soft-tissue balance may be a key factor in enhancing TKR outcomes.