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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...

Ankle Joint

Ankle Joint

The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the tibia and fibula of the leg. The superior aspect of the talus bone is square-shaped and has three areas of articulation. The top of the talus articulates with the inferior tibia. This is the portion of the ankle joint that carries the body weight between the leg and foot. The sides of the talus are firmly held in position by the articulations...

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Related Experiment Video

Updated: May 6, 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

[Experience in 98 unicondylar knee prostheses Marmor].

G Girard¹, P Segal, D Gandon

¹Service Orthopédie - Traumatologie 2, C.H.U. Reims, Hôpital Maison Blanche, 45, rue Cognacq Jay, F-51092, Reims Cedex.

European Journal of Orthopaedic Surgery & Traumatology : Orthopedie Traumatologie

|November 7, 2013

Summary

Marmor unicompartmental knee prostheses showed 72% good to excellent results for knee osteoarthritis. Complications were mainly linked to tibial loosening, indicating a need for improved tibial component fixation.

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Last Updated: May 6, 2026

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

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Published on: May 5, 2023

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Oscillation and Reaction Board Techniques for Estimating Inertial Properties of a Below-knee Prosthesis

Oscillation and Reaction Board Techniques for Estimating Inertial Properties of a Below-knee Prosthesis

Published on: May 8, 2014

Area of Science:

Orthopedic Surgery
Biomaterials Science
Reconstructive Surgery

Context:

Marmor unicompartmental knee prostheses were implanted between 1974 and 1992.
The study included 98 prostheses for gonarthrosis, with specific attention to genu valgum and genu varum deformities.
Prostheses were placed in both lateral and medial femoro-tibial compartments.

Purpose:

To evaluate the clinical outcomes and complications of Marmor unicompartmental knee prostheses.
To assess the long-term efficacy of this specific implant design in treating knee osteoarthritis.

Summary:

A total of 98 Marmor unicompartmental prostheses were analyzed with a minimum 12-month follow-up.
International Knee Society Score revealed 72% good and excellent results.
Reoperations occurred in 11 patients, primarily due to tibial loosening, highlighting a key area for improvement.

Impact:

The findings confirm the generally good clinical performance of the Marmor unicompartmental prosthesis.
Complications are predominantly associated with the tibial component, suggesting areas for future implant design refinement.
This study provides valuable data for orthopedic surgeons considering unicompartmental knee arthroplasty options.