Answer:Injuries to the SCJ are rare, comprising less than 1% of all joint dislocations and only 3% of shoulder girdle injuries.
Explanation:
http://brownemblog.com/blog-1/2018/1/5/scj-dislocation#:~:text=Injuries%20to%20the%20SCJ%20are,3%25%20of%20shoulder%20girdle%20injuries.
Collagen
is a protein fiber that is found in the matrix that lies outside the bone
cells. Population of these collagen fibers that scattered through the matrix are
embedded in a gel-like ground substance called hyaline cartilage, which
is flexible but avascular and contains no nerves or blood vessels.
