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Gray's subject #70 284

A synarthrosis is a type of joint which permits very little or no movement under normal conditions. Most synarthrosis joints are fibrous.

Suture joints and synchondroses are synarthroses.[1 ]


They can be categorised by how the two bones are joined together:

  • Synchondroses are joints where the two bones are connected by a piece of cartilage.
  • Synostoses are where two bones that are initially separated eventually fuse together, essentially becoming one bone. In humans the plates of the cranium fuse together as a child approaches adulthood. Children whose craniums fuse too early may suffer deformities and brain damage as the skull does not expand properly to accommodate the growing brain, a condition known as craniostenosis.


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