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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 group...

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Related Experiment Video

Updated: May 11, 2026

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

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

Published on: May 5, 2023

Liner exchange in total knee arthroplasty.

Paul F Lachiewicz¹, Elizabeth S Soileau

¹Chapel Hill Orthopedics Surgery and Sports Medicine, 101 Conner Drive, Suite 200, Chapel Hill, NC 27514, USA. paul.lachiewicz@gmail.com

Journal of Surgical Orthopaedic Advances

|May 1, 2013

Summary

Tibial liner exchange in revision knee arthroplasty is effective for wear and infection, showing improved pain and function. Success rates vary by indication, with wear demonstrating the highest success in this study.

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Treatment of Ankle Osteoarthritis with Total Ankle Replacement Through a Lateral Transfibular Approach

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Published on: January 24, 2018

Area of Science:

Orthopedic surgery
Biomaterials science

Background:

Revision knee arthroplasty is a complex procedure.
Tibial liner exchange is a debated intervention for various complications.

Purpose of the Study:

To evaluate the clinical success and reoperation rates of tibial liner exchange.
To assess outcomes based on specific indications for revision: polyethylene wear, acute infection, instability, and other diagnoses.

Main Methods:

Retrospective review of 39 revision knee arthroplasties involving modular liner exchange.
Evaluation using the Knee Society scoring system.
Follow-up at a mean of 4.3 years.

Main Results:

Liner exchange for polyethylene wear showed 100% success (12/12 knees).
Success rates for other indications: acute infection (9/11), instability (3/4), and other diagnoses (10/12).
Significant improvements in pain scores across all groups and function scores for infection and other diagnoses groups.

Conclusions:

Tibial liner exchange is a successful procedure for revision knee arthroplasty, particularly for polyethylene wear.
The intervention yields positive clinical outcomes, including pain reduction and functional improvement, depending on the initial diagnosis.