A syndesmosis joint is a specific type of fibrous joint where two adjacent bones are connected by strong ligaments and a crucial interosseous membrane (IOM).
Understanding Syndesmosis Joints
Syndesmosis joints offer stability while allowing for slight movement. The strength of the ligamentous structures, particularly the interosseous membrane, is key to its function.
Key Characteristics:
- Fibrous Joint Type: Classified as a fibrous joint because the bones are joined by dense connective tissue.
- Ligamentous Connection: Strong ligaments directly connect the adjacent bones.
- Interosseous Membrane (IOM): A significant, strong membrane situated between the bones, further stabilizing the joint. As noted in the reference material, a syndesmosis is a fibrous joint characterized by two adjacent bones connected by ligamentous structures, including a strong interosseous membrane (IOM).
Examples of Syndesmosis Joints in the Body:
While not explicitly mentioned in the provided reference, common examples of syndesmosis joints include:
- Distal Tibiofibular Joint: Located between the tibia and fibula in the lower leg, crucial for ankle stability.
- Radioulnar Interosseous Membrane: Connects the radius and ulna in the forearm, allowing for pronation and supination.
Functionality:
Syndesmosis joints provide stability and permit limited movement, essential for weight-bearing and mobility. They facilitate the transfer of forces between bones.
