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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...

Fractures: Bone Repair

Fractures: Bone Repair

Treatment for a fracture is based on the type of break, the bone affected, and the patient's age.
Minor fractures with no bone displacement are treated by immobilizing the fractured bone using a cast or splint. However, in the case of fractures with displaced bones, the broken bones are repositioned before immobilization to ensure successful healing without deformation and loss of function. The realignment of fractured bone ends is performed through a process called reduction. If the procedure...

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...

Bones of the Lower Limb: Tibia and Fibula

Bones of the Lower Limb: Tibia and Fibula

The tibia is the main weight-bearing bone of the lower leg. It is larger than the fibula with which it is paired. The tibia is also the second longest bone in the body and is located right below the skin. The proximal end of the tibia forms the medial and the lateral condyle, which articulates with the condyles of the femur to form the knee joint. Between the articulating surfaces is the irregular elevated area known as the intercondylar eminence that serves as the inferior attachment point for...

Bones of the Upper Limb: Radius

Bones of the Upper Limb: Radius

The radius is longer of the two bones that make up the human antebrachium or forearm. At the proximal end, the radius articulates with the capitulum of the humerus and the radial notch of the ulna to form the elbow joint. At the distal end, the radius articulates with the ulna via the ulnar notch, forming the distal radioulnar joint. Distally, the radius also attaches to the carpal wrist bones (scaphoid and lunate) to form the radiocarpal joint.
The radius has a nail-shaped head, and a short...

Bones of the Lower Limb: Femur and Patella

Bones of the Lower Limb: Femur and Patella

The femur is the body's longest and strongest bone spanning the thigh region. Its head articulates with the acetabulum of the hip bone to form the hip joint. A minor indentation on the medial side of the femoral head, called the fovea capitis, serves as the site of attachment for the ligament of the head of the femur. This weak ligament spans the femur and acetabulum and supports the hip joint. The narrowed region below the head is the neck of the femur. The inclination angle between the neck...

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Related Experiment Video

Updated: Jul 5, 2026

Minimally Invasive Treatment for Thoracolumbar Burst Fracture Using Sagittal Alignment Screws and A Trauma Reduction Device

Minimally Invasive Treatment for Thoracolumbar Burst Fracture Using Sagittal Alignment Screws and A Trauma Reduction Device

Published on: November 8, 2024

The Lyon brace.

Jean Claude de Mauroy¹, Cyril Lecante, Frederic Barral

¹Clinique du Parc, 155 Boulevard Sralingrad, Lyon, France. demauroy@aol.com

Disability and Rehabilitation. Assistive Technology

|May 10, 2008

Summary

This summary is machine-generated.

The Lyon Brace, an adjustable scoliosis orthosis, shows high effectiveness (0.95 index) in conservative treatment. Best results are seen in lumbar and double major scoliosis, with significant rib hump reduction.

Related Experiment Videos

Last Updated: Jul 5, 2026

Minimally Invasive Treatment for Thoracolumbar Burst Fracture Using Sagittal Alignment Screws and A Trauma Reduction Device

Minimally Invasive Treatment for Thoracolumbar Burst Fracture Using Sagittal Alignment Screws and A Trauma Reduction Device

Published on: November 8, 2024

Area of Science:

Orthopaedics
Biomedical Engineering

Background:

The Lyon Brace, an adjustable multi-shells orthosis, has been utilized for over 60 years in conservative scoliosis treatment.
Three distinct types exist: thoracic, thoraco-lumbar, and lumbar braces.

Purpose of the Study:

To evaluate the long-term effectiveness of the Lyon Brace in conservative scoliosis management.
To analyze the impact of the brace on spinal angulation and rib hump deformity.

Main Methods:

A multi-stage management protocol involving reductive plaster casts, electronic or hand-molded corrections, and specific physiotherapy.
Treatment protocol adjusted based on initial scoliosis angulation and Risser sign.
Effectiveness assessed using an index on 1338 scoliosis patients followed for at least two years post-treatment.

Main Results:

An overall effectiveness index of 0.95 was recorded for the Lyon Brace treatment.
When initiated at Risser 0, the effectiveness index was 0.80.
Significant reduction in rib hump deformity (average of 50%) was observed, alongside stabilization of spinal angulation.
Optimal outcomes were achieved in patients with lumbar scoliosis and double major curves.

Conclusions:

The Lyon Brace is a highly effective conservative treatment for scoliosis, particularly for lumbar and double major types.
Technological advancements enhance the precision and ease of brace adjustment, especially during adolescent growth spurts.
The comprehensive management protocol, including physiotherapy, contributes to the brace's success.