Synarthrosis

Synarthrosis is a type of joint in the human body that allows for little or no movement. This type of joint is found in areas where stability is required, such as the skull and the spine.

Types of Synarthrosis

There are three main types of synarthrosis joints: fibrous, cartilaginous, and bony.

Fibrous Joints

Fibrous joints are connected by fibrous connective tissue. They are immovable and provide stability. Examples include the sutures in the skull and the gomphosis joint that connects the teeth to the jawbone.

Cartilaginous Joints

Cartilaginous joints are connected by cartilage. They allow for a small amount of movement and provide shock absorption. Examples include the intervertebral discs in the spine and the pubic symphysis in the pelvis.

Bony Joints

Bony joints, also known as synostoses, are formed when the gap between two bones ossifies and they become a single bone. This type of joint is immovable. Examples include the epiphyseal plate in children, which ossifies into the epiphyseal line in adults.

Function

The primary function of synarthrosis joints is to provide stability and strength. They are found in areas of the body that need to withstand a lot of pressure and strain, such as the skull and the spine.

Clinical Significance

Abnormalities or injuries to synarthrosis joints can lead to a variety of medical conditions. For example, craniosynostosis is a condition where the sutures in a baby's skull fuse too early, causing problems with brain growth and skull shape.

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See Also

• Joint
• Fibrous joint
• Cartilaginous joint
• Bony joint
• Craniosynostosis

References

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External Links

• Britannica: Synarthrosis
• Healthline: Synarthrosis