Why is the scapulothoracic articulation not a joint?-The scapulothoracic articulation is not a true joint because there are _____ as an articulation. There is movement of one ___(the scapula) on a collection of _____ (the thoracic cage). It is also not a joint because it does not have which four things?
no structures that qualify, bone, bones, joint capsule, synovial membrane, synovial fluid, and articular cartilage.
The scapulothoracic articulation is not a true joint because there are no bony connections as an articulation. Instead, the scapula articulates with the thorax via muscles and soft tissue attachments. There is movement of one bone (the scapula) on a collection of bones (the thoracic cage).
It is also not a joint because it does not have four essential components of a true joint:
1. Articular cartilage: The scapulothoracic articulation does not have articular cartilage, which is a connective tissue that covers the bony surfaces of a joint that prevents friction and absorbs shock.
2. Synovial fluid: The scapulothoracic articulation does not have synovial fluid, which is a lubricating fluid that fills the joint capsule to reduce friction and minimize wear and tear on the bones.
3. Joint capsule: The scapulothoracic articulation does not have a joint capsule, which is a fibrous tissue that lines the joint and helps to hold the bones together.
4. Ligaments: The scapulothoracic articulation does not have ligaments, which are tough bands of fibrous tissue that connect bones to bones and help to stabilize the joint.
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