Amphiarthrosis
slight movement
Amphiarthrosis is a type of joint in which two bones are joined together by fibrous or cartilaginous tissue, allowing limited movement. It is also known as a partially moveable joint. Amphiarthrosis joints are found primarily in the axial skeleton, which includes the spine and pelvis.
There are two main types of amphiarthrosis joints:
1. Fibrous Amphiarthrosis: In this type of joint, the bones are connected by strong fibrous tissue such as ligaments or interosseous membranes. These joints have limited movement but provide stability to the bones. Examples of fibrous amphiarthrosis joints include the joints between the tibia and fibula, and the joints between the radius and ulna bones in the forearm.
2. Cartilaginous Amphiarthrosis: In this type of joint, the bones are connected by fibrocartilage or hyaline cartilage. These joints provide more movement than fibrous amphiarthrosis joints but are still limited in their range of motion. Examples of cartilaginous amphiarthrosis joints include the joints between the vertebrae in the spine and the pubic symphysis joint in the pelvis.
Overall, amphiarthrosis function to provide stability and support to the skeletal system, while also allowing some degree of movement for essential functions such as breathing and bending.
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