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Related Experiment Videos

Revision total knee replacement ligament balancing for deformity.

Kenneth A Krackow¹

¹Department of Orthopaedic Surgery, Buffalo General Hospital, NY 14203, USA.

Clinical Orthopaedics and Related Research

|November 20, 2002

Summary

Achieving proper ligament balance in revision knee surgery is complex. Surgeons must carefully manage flexion-extension gaps and consider varus-valgus constraint when standard balancing fails.

Related Concept Videos

Knee Joint

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...

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Area of Science:

Orthopedic Surgery
Biomechanical Engineering

Background:

Revision knee surgery presents unique challenges in ligament balancing.
Inadequate gap balancing can lead to instability and poor outcomes.

Purpose of the Study:

To highlight critical considerations for ligament balancing in revision knee arthroplasty.
To discuss strategies for managing flexion-extension gaps and instability.

Main Methods:

Review of surgical techniques for ligament balancing in revision settings.
Analysis of tension-stress relationships and gap asymmetry.
Evaluation of concave-side releases and their limitations.

Main Results:

Standard ligament balancing may be insufficient, necessitating varus-valgus constraint.

Related Experiment Videos

Loss of collateral and posterior capsular integrity leads to enlarged flexion space.

Thicker tibial components can cause flexion contracture; intercondylar peg subluxation is a risk.

Conclusions:

Precise ligament balancing is crucial in revision knee arthroplasty.
Strategies for managing flexion space and instability, including constraint, are vital.
Potential complications like flexion contracture and subluxation must be anticipated.