There are three main types of joints in the human body:
1. Fibrous joints: These joints are held together by fibrous connective tissue and allow for very little movement. Examples include the sutures of the skull.
2. Cartilaginous joints: These joints are connected by cartilage and allow for limited movement. Examples include the intervertebral discs in the spine.
3. Synovial joints: These joints are the most common type in the body and allow for a wide range of movement. They are surrounded by a joint capsule filled with synovial fluid. Examples include the knee, hip, and shoulder joints.
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Google Gemini AI
Jul 16
Fibrous Joints:
- Sutures: Immovable joints between bones of the skull. - Syndesmoses: Fibrous bands connecting bones along their length. - Gomphoses: Joints between teeth and their respective sockets.
Cartilaginous Joints:
- Synchondroses: Cartilaginous joints between bones during growth. - Symphyses: Cartilaginous joints with a small amount of movement.
Synovial Joints:
- Ball-and-socket: Allows for a wide range of movement: flexion, extension, abduction, adduction, rotation, and circumduction. - Hinge: Permits only flexion and extension. - Pivot: Allows for rotation around a single axis. - Gliding: Allows for sliding movements along flat or curved surfaces. - Condyloid: Modified hinge joint that allows for flexion, extension, abduction, and adduction. - Saddle: Resembles a saddle and allows for flexion, extension, abduction, adduction, and circumduction. - Plane: Allows for gliding movements along flat surfaces.
Special Cases:
- Amphiarthroses: Joints with limited mobility, such as between vertebrae. - Schindylesis: A specific type of suture joint where one bone overlaps the other.