Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Lower septic revision rates following cementless compared with cemented robotic-assisted total knee arthroplasty using a single implant design : a five-year survivorship analysis.

The bone & joint journal·2026
Same author

Jumbo Femoral Heads in Total Hip Arthroplasty: Improved Early Stability Without Added Complications.

The Journal of arthroplasty·2026
Same author

In Vitro Evaluation of Tibiofemoral Contact Stress and Graft Loading After Modified MacIntosh Anterior Cruciate Ligament Reconstruction.

The American journal of sports medicine·2026
Same author

Incidence of Early Periprosthetic Hip Fractures in Patients Over Age 70 Years Following Primary Total Hip Arthroplasty Using a Novel Triple-Tapered Collared Femoral Stem.

The Journal of arthroplasty·2026
Same author

Evaluating the Utility and Acceptability of an Artificial Intelligence-Powered Care Aid for Perioperative Patient Inquiries in Joint Arthroplasty Surgery.

The Journal of arthroplasty·2026
Same author

Obesity and Total Knee Arthroplasty Revisited: Minimal Impact on Loosening and Mechanical Failure in the Modern Era.

The Journal of arthroplasty·2026

Related Experiment Video

Updated: Jul 28, 2025

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

635

Posterior-stabilized versus mid-level constraint polyethylene components in total knee arthroplasty.

Cynthia A Kahlenberg1, Erin E Berube2, William Xiang2

  • 1Adult Reconstruction and Joint Replacement Service, Hospital for Special Surgery, New York, New York, USA.

Bone & Joint Open
|June 5, 2023
PubMed
Summary

Mid-level constraint designs for total knee arthroplasty (TKA) reduce coronal and axial laxity compared to posterior-stabilized (PS) designs. However, their sagittal plane stabilization is limited, and both designs rely on the medial collateral ligament (MCL) for anterior load resistance.

More Related Videos

Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty
09:31

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

Published on: February 27, 2018

11.8K
The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve
09:51

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve

Published on: September 7, 2022

2.7K

Related Experiment Videos

Last Updated: Jul 28, 2025

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

635
Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty
09:31

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

Published on: February 27, 2018

11.8K
The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve
09:51

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve

Published on: September 7, 2022

2.7K

Area of Science:

  • Orthopedic Surgery
  • Biomechanics
  • Biomedical Engineering

Background:

  • Total knee arthroplasty (TKA) aims to restore knee function and stability.
  • Mid-level constraint designs are developed to manage coronal plane laxity in TKA.
  • Posterior-stabilized (PS) designs offer a different approach to knee stability.

Purpose of the Study:

  • To compare the kinematics and ligament forces of mid-level and PS TKA designs.
  • To evaluate stability in coronal, sagittal, and axial planes under simulated clinical loads.
  • To assess the performance of Zimmer Biomet Persona PS and mid-level designs in a cadaver model.

Main Methods:

  • TKA was performed on eight cadaveric knees using robotic manipulation.
  • Both mid-level and PS designs were tested under varus/valgus moments, internal-external rotation moments, and anteroposterior forces.
  • Tibiofemoral angulations, translations, and medial/lateral collateral ligament (MCL/LCL) forces were measured at multiple flexion angles.

Main Results:

  • Mid-level inserts significantly reduced varus/valgus angulations and internal-external rotations across flexion angles (p ≤ 0.027).
  • Anterior tibial translation was reduced by mid-level inserts only at 90° flexion (p = 0.036).
  • Mid-level inserts decreased LCL forces under varus and internal rotation moments, and MCL forces under external rotation, but not MCL forces under valgus or anterior loads.

Conclusions:

  • Mid-level TKA inserts effectively reduce coronal and axial plane laxities compared to PS inserts.
  • The sagittal plane stabilization benefit of mid-level inserts was limited in this study.
  • Both mid-level and PS designs rely on the MCL for resisting anterior loads during simulated clinical examination.