Understanding the Costovertebral Joints and their Role in the Thoracolumbar Junction

Thoracolumbar Junction: Lower Facets

Restrict rotation, resulting in harder end feel on rotational testing

The thoracolumbar junction is the area of the spine where the thoracic and lumbar regions meet. In this region, there are five lower facets that are responsible for connecting the thoracic and lumbar vertebrae. These facets are known as the costovertebral joints and they play an important role in the stability and movement of the spine.

The costovertebral joints are formed by the connection of the heads of the ribs with the vertebral bodies at the T11, T12, L1, L2, and L3 levels. These joints are synovial joints, which means they are surrounded by a capsule that contains synovial fluid. This fluid acts as a lubricant and helps to reduce friction between the bones during movement.

The lower facets of the thoracolumbar junction are designed to allow movement in multiple directions, including flexion, extension, rotation, and lateral flexion. This flexibility is necessary for activities like rotating the torso, bending forward to pick up an object, or turning the head to look behind you while driving.

However, the lower facets of the thoracolumbar junction can also be a source of pain for some individuals. For example, if the joints become inflamed or irritated due to injury or degeneration, it can result in pain and stiffness in the back. In some cases, surgery may be necessary to repair or replace damaged joints in this area. It is important to consult with a healthcare professional if you experience persistent pain or discomfort in the thoracolumbar junction region.

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