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Related Concept Videos

Knee Joint01:23

Knee Joint

3.7K
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...
3.7K

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Related Experiment Video

Updated: Mar 24, 2026

Author Spotlight: Implementing the Enhanced Recovery After Surgery Concept in Rehabilitation Following Anterior Cruciate Ligament Reconstruction
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Knee instability scores for ACL reconstruction.

Ata A Rahnemai-Azar1,2, Jan-Hendrik Naendrup1,2, Ashish Soni1

  • 1Department of Orthopaedic Surgery, University of Pittsburgh, 3471 Fifth Avenue, Pittsburgh, PA, 15213, USA.

Current Reviews in Musculoskeletal Medicine
|March 17, 2016
PubMed
Summary

Returning to sport after anterior cruciate ligament (ACL) injury is challenging due to residual knee laxity. Objective measures can improve instability assessment for better patient outcomes.

Keywords:
ACLAnterior cruciate ligamentLaxity scoresQuantitative pivot shift testTreatment algorithm

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Area of Science:

  • Orthopedics
  • Sports Medicine
  • Biomechanics

Background:

  • Anterior cruciate ligament (ACL) injuries present significant challenges for athletes seeking to return to sport.
  • Residual rotatory knee laxity is a key factor contributing to suboptimal functional outcomes post-ACL injury.

Purpose of the Study:

  • To review current subjective laxity scores for knee instability assessment.
  • To introduce objective measuring systems that complement traditional grading.
  • To discuss how these advancements can inform individualized treatment algorithms.

Main Methods:

  • Literature review of subjective knee instability scoring systems.
  • Examination of recently developed objective quantification devices for knee laxity.
  • Analysis of how objective data can enhance clinical decision-making.

Main Results:

  • Existing subjective laxity scores have limitations in standardizing knee instability assessment.
  • Objective measurement devices offer improved evaluation of static and dynamic knee laxity.
  • Objective data can identify associated injuries more effectively.

Conclusions:

  • Objective assessment tools enhance the evaluation of knee instability after ACL injury.
  • Improved assessment facilitates the development of tailored treatment algorithms.
  • Individualized treatment strategies are crucial for optimizing return-to-sport outcomes.