Health & Fitness

What is the syndesmosis?

By: Hiba MohammedUpdated: November 28, 2020


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    September 28, 2022
A syndesmosis is a fibrous joint between two bones and linked by ligaments and a strong membrane. The distal tibiofibular syndesmosis is a syndesmotic joint.

So, where are Syndesmoses found in the body?

Syndesmoses are found between the bones of the forearm (radius and ulna) and the leg (tibia and fibula). Fibrous joints strongly unite adjacent bones and thus serve to provide protection for internal organs, strength to body regions, or weight-bearing stability.

Subsequently, question is, what is an example of a symphysis joint?

(2) A symphysis consists of a compressable fibrocartilaginous pad that connects two bones. This type of joint allows for some movement. The hip bones, connected by the pubic symphysis, and the vertebrae, connected by intervertebral discs, are two examples of symphyses.

What are examples of fibrous joints?

Examples of fibrous joints include:
  • sutures between skull bones,
  • syndesmoses between certain long bones e.g. the tibia and fibula.
  • gomphoses that attach the roots of human teeth to the upper- and lower- jaw bones.

How is syndesmosis treated?

Whether you need surgery or not, severe syndesmotic sprains are usually followed by physical therapy. The focus is on healing and regaining full range of motion and normal strength. Full recovery may take as long as 2 to 6 months.


How long does syndesmosis take to heal?

Evidence suggests that syndesmosis sprains typically require 6 to 8 weeks for recovery, but this is variable. Chronic pain, instability, and functional limitations are common after syndesmosis sprains.

Is the syndesmosis a ligament?

These bones, the tibia, and fibula are between the knee and ankle joints. Connecting these bones is a ligament called the syndesmosis, also called the syndesmotic ligament. Syndesmosis ligament injuries often occur in conjunction with other ankle injuries, including sprains and fractures.

How is syndesmosis injury diagnosed?

The diagnosis of syndesmosis injury is based on injury pattern, thorough physical examination, and radiographic findings. When no fracture is present, clinical findings will include ankle pain, tenderness directly over the anterior syndesmosis, and positive squeeze and external rotation tests.

What is a syndesmosis injury?

An ankle syndesmosis injury involves a sprain of one or more of the ligaments that support the ankle syndesmosis and is also often referred to as a “high ankle sprain”. It typically occurs when the ankle is forcefully twisted outwards, or when the foot is planted, and the leg twists inwards such as in a tackle.

What is a Syndesmotic joint?

The syndesmosis is a fibrous joint held together by ligaments. It's located near the ankle joint, between the tibia, or shinbone, and the distal fibula, or outside leg bone. That's why it's also called the distal tibiofibular syndesmosis. interosseous ligament.

What is a Gomphosis?

A gomphosis is a fibrous mobile peg-and-socket joint. The roots of the teeth (the pegs) fit into their sockets in the mandible and maxilla and are the only examples of this type of joint.

What is syndesmosis of the ankle?

The syndesmosis is a fibrous joint held together by ligaments. It's located near the ankle joint, between the tibia, or shinbone, and the distal fibula, or outside leg bone. That's why it's also called the distal tibiofibular syndesmosis.

What is a syndesmosis ankle injury?

Definition/Description. A syndesmotic, or 'high' ankle sprain is one that involves the ligaments binding the distal tibia and fibula at the Distal Tibiofibular Syndesmosis. Injuries can occur with any ankle motion, but the most common motions are extreme external rotation or dorsiflexion of the Talus.

What makes up the syndesmosis?

The distal tibiofibular syndesmosis, between the fibula and tibia, is formed by three major ligaments: the anterior inferior tibiofibular ligament (AITFL), the posterior inferior tibiofibular ligament (PITFL), and the interosseous tibiofibular ligament (ITFL).

Is syndesmosis a synovial joint?

Anatomy. A syndesmosis is a joint where the rough edges of two bones are held together by thick connective ligaments. The connection of the lower leg bones, the tibia and fibula, is a syndesmosis. Synovial joints are enclosed by a ligament capsule and contain a fluid, called synovium, that lubricates the joint.

What is the tibiofibular syndesmosis?

Distal tibiofibular syndesmosis. The tibiofibular syndesmosis is a complex fibrous joint composed of multiple ligaments and a broad fibrous interosseous membrane that spans between the tibia and fibula throughout the length of both bones.

What is the squeeze test for high ankle sprain?

The fibular compression test, or squeeze test, is used if a syndesmotic or fibular injury is suspected. To perform the squeeze test, place the thumb on the tibia and the fingers on the fibula at the midpoint of the lower leg; then squeeze the tibia and fibula together.

Why does high ankle sprain take long to heal?

High ankle sprain recovery time and returning to sport
It is important to understand that because the structures involved in a syndesmotic sprain can lead to instability of the primary ankle joint, rehabilitation and total healing take much longer recovery time than a traditional ankle sprain.

What is a Weber B fracture?

Ankle FractureWeber B. You have sustained a fracture to your fibula (outside ankle bone). If the Orthopaedic Consultant considers this unstable, an operation with plate and screws may be required. If your injury is classified as a stable Weber B type fracture, you will be treated in a boot.

How do high ankle sprains occur?

A high ankle sprain occurs from a twisting or rotational injury. They are common in sports, especially impact sports. An external rotation, when the foot is turned towards the outside with respect to the leg, most commonly causes these tears. A high ankle sprain also can occur if the ankle is broken.