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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: Apr 18, 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

Unicompartmental knee replacement: a historical overview.

Danilo Bruni¹, Francesco Iacono¹, Ibrahim Akkawi¹

¹2nd Orthopedics and Traumatology Clinic, Laboratory of Biomechanics and Technological Innovation, Rizzoli Orthopedics Institute, Bologna, Italy.

|January 22, 2015

Summary

This summary is machine-generated.

Demand for unicompartmental knee replacement (UKR) is rising for knee osteoarthritis. This review covers the evolution of minimally invasive UKR and the resurgence of interpositional hemiarthroplasty.

Keywords:

knee replacement minimally invasive technique

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Area of Science:

Orthopedic surgery
Biomedical engineering

Background:

Growing demand for unicompartmental knee replacement (UKR) for isolated knee compartment degeneration.
Osteoarthritis and osteonecrosis are primary indications for UKR.

Purpose of the Study:

To provide a literature review on the evolution of unicompartmental knee replacement.
To trace the historical development of minimally invasive UKR and interpositional hemiarthroplasty.

Main Methods:

Literature review of unicompartmental knee replacement.
Historical analysis of surgical techniques and concepts.

Main Results:

Unicompartmental knee replacement has undergone significant evolution over 30 years.
Modern minimally invasive UKR techniques have advanced significantly.
Interpositional hemiarthroplasty concept has seen a revival.

Conclusions:

UKR is an increasingly important treatment for focal knee joint disease.
Minimally invasive approaches and revived concepts are shaping modern UKR.
Further research into UKR techniques and outcomes is warranted.