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Related Concept Videos

Knee Joint01:23

Knee Joint

The knee joint is the most complicated joint in the body. It consists of three articulations– two tibiofemoral and one patellofemoral. As is characteristic of synovial joints, the knee joint has a thin articular capsule that partially surrounds this joint cavity. Additionally, several ligaments, muscles, and cartilaginous structures support the movement of the knee.
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris group...

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In Vitro Application of a Wireless Sensor in Flexion-Extension Gap Balance of Unicompartmental Knee Arthroplasty
07:33

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

Published on: May 5, 2023

Factors affecting flexion after total knee arthroplasty.

Douglas A Dennis1, Richard D Komistek, Giles R Scuderi

  • 1Department of Biomedical Engineering, University of Tennessee, Knoxville, TN, USA. kslutzky@co-ortho.com

Clinical Orthopaedics and Related Research
|July 11, 2007
PubMed
Summary

High-flexion total knee arthroplasty can achieve 125 degrees of flexion, but results vary significantly. Patient factors, surgical technique, and physiotherapy play crucial roles beyond implant design.

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Area of Science:

  • Orthopedic surgery
  • Biomechanics
  • Biomedical engineering

Background:

  • Total knee arthroplasty (TKA) offers pain relief and improved function.
  • Existing TKA designs may not meet the high flexion demands of younger patients or specific ethnic/religious groups.
  • New implant designs aim to enhance postoperative knee flexion.

Purpose of the Study:

  • To review factors influencing postoperative flexion after TKA.
  • To evaluate the effectiveness of high-flexion TKA designs in achieving greater knee mobility.

Main Methods:

  • In vivo, weight-bearing fluoroscopic kinematic analysis of multiple high-flexion TKA designs.
  • Review of studies evaluating factors affecting knee flexion post-TKA.

Main Results:

  • Some high-flexion TKA designs achieved up to 125 degrees of weight-bearing flexion.
  • Significant variability in flexion outcomes was observed across different surgeons, patient populations, and implant designs.
  • Factors beyond implant design, including patient-specific elements, surgical technique, and rehabilitation, influence flexion.

Conclusions:

  • Achieving high postoperative knee flexion in TKA is multifactorial.
  • Implant design alone does not guarantee high flexion; patient, surgical, and rehabilitative factors are critical.
  • Further research is needed to optimize TKA for diverse patient needs and activity levels.