I believe you are referring to a "fusion" or "fused joint"
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The answer given in my book is Synarthroses.
By definition a joint (articulation) is the site where two bones come together. There are many classifications depending on the amount of movement that occurs between the bones and the age of the person. Some are freely moveable (your shoulder) and some are immovable (bones in the adult cranium).
suture
suture
The joints between bones of the skull are immovable and called sutures.
suturesutureThe part of the skull that is a example of an immovable fibrous joint would be a suture.
The bones of the cranium or the brain box are immovable. They are 8 in number.
A fibrous joint, also known as a synarthrosis, is a type of joint found between immovable bones. These joints are held together by fibrous connective tissue, allowing for minimal to no movement between the bones. Examples of fibrous joints include sutures in the skull and syndesmoses in the lower leg.
An arthrosis is any articulation or joint between bones, or any disease of such a joint, such as osteoarthritis.
The bones of the skull when they fuse in an adult form an immovable joint.
The articulation of two or more bones is called a joint. Joints are where bones come together and allow movement in the body.
Immovable joints, like sutures in the skull, allow for no movement between the bones. Slightly movable joints, like the intervertebral discs, allow for limited movement between the articulating bones. Both types of joints contribute to the overall stability and functionality of the skeletal system.
The bones of the cranium or the brain box are immovable. They are 8 in number.