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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...

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Related Experiment Video

Updated: Oct 10, 2025

The Use of Mixed Reality in Custom-Made Revision Hip Arthroplasty: A First Case Report

The Use of Mixed Reality in Custom-Made Revision Hip Arthroplasty: A First Case Report

Published on: August 4, 2022

Fast-track revision knee arthroplasty.

Martin Lindberg-Larsen¹, Pelle Baggesgaard Petersen², Yasemin Corap³

¹Orthopaedic Research Unit, Department of Orthopaedic Surgery and Traumatology, Odense University Hospital, Department of Clinical Research, University of Southern Denmark, Denmark; Lundbeck Foundation Centre for Fast-track Hip and Knee Replacement, Copenhagen, Denmark.

|December 11, 2021

Summary

This summary is machine-generated.

Fast-track protocols for revision knee arthroplasty are safe, leading to shorter hospital stays. This approach is effective for revision knee surgery, reducing length of stay (LOS) over time.

Keywords:

Fast-track Knee replacement Rapid recovery Readmissions Revision knee arthroplasty Safety

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Last Updated: Oct 10, 2025

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Published on: January 24, 2018

Area of Science:

Orthopedic Surgery
Arthroplasty Research
Fast-Track Protocols

Background:

Limited data exist on fast-track protocols for revision knee arthroplasty.
Fast-track protocols are well-established for primary total knee arthroplasty (TKA).

Purpose of the Study:

To report length of stay (LOS) after revision knee arthroplasty.
To assess the risk of LOS > 5 days.
To evaluate 90-day readmission risk in centers using fast-track protocols.

Main Methods:

Observational cohort study including 1439 revision knee arthroplasties.
Data collected from 6 dedicated fast-track centers (2010-2018).
Analysis of total revisions, large partial revisions, and unicompartmental knee arthroplasty (UKA) to TKA revisions.

Main Results:

Mean LOS decreased from 3.7 to 2.4 days between 2010 and 2018.
Risk factors for LOS > 5 days included prior revisions, walking aid use, high BMI, and younger/older age groups.
Revision of UKA to TKA and large partial revisions were associated with shorter LOS.

Conclusions:

Fast-track protocols, similar to those for primary TKA, are safe for revision knee arthroplasty.
These protocols result in short and decreasing lengths of stay.
9.1% 90-day readmission and 0.5% mortality rates were observed.