There are two types: primary cartilaginous joints composed of hyaline cartilage, and secondary cartilaginous joints composed of hyaline cartilage covering the articular surfaces of the involved bones with fibrocartilage connecting them.

cartilaginous joint РІР‚вЂњ joined by cartilage.

fibrous joint РІР‚вЂњ joined by dense regular connective tissue that is rich in collagen fibers.

There are four structural classifications of joints: Structural classification names and divides joints according to the type of binding tissue that connects the bones to each other. Types of joints based upon their structure (L to R): Cartilaginous joint, Fibrous joint, and Synovial joint. Structural classification (binding tissue)

polyarticular РІР‚вЂњ concerning 5 or more joints.

oligoarticular or pauciarticular РІР‚вЂњ concerning 2РІР‚вЂњ4 joints.

In practice, there is significant overlap between the two types of classifications.Р”В¬linical, numerical classification Structural classification is determined by how the bones connect to each other, while functional classification is determined by the degree of movement between the articulating bones. Joints are mainly classified structurally and functionally. If only adults are considered, there are 360 joints in the adult human body.

However, the number of sesamoids is the same in most people with variations being rare. The number of joints depends on if sesamoids are included, age of the human and the definition of joints. 1.3 Functional classification (movement).

1.2 Structural classification (binding tissue).

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