![]() ![]() Mini-open anterior approach for cervicothoracic junction fracture: technical note. Stabilization of the Cervicothoracic Junction. Sometimes, ligament injuries may also occur.ģ Wang VY, Chou D. These fractures usually include burst fractures (severely compressed or crushed vertebrae), facet joint fractures, and dislocation of the C7 and/or T1 vertebrae. An estimated 2% to 9% of cervical spine fractures occur at the CTJ. ![]() 2007 18(2):365-71.Ī few conditions that may affect the CTJ are: Research suggests that CTJ injuries may be missed during due to difficulties in visualizing this region on plain X-Ray films.ģ Wang VY, Chou D. Cervicothoracic Trauma: Diagnosis and Treatment. While the diagnosed problems at the C7-T1 level are less common,Ģ Chen J, Eismont FJ. The vertebral bodies and arches protect the spinal cord within the spinal canal. These muscles commonly include those involved in bending the wrist and the fingers. The C8 myotome is a group of muscles controlled by the C8 nerve.This dermatome can vary, but it typically includes areas of skin over parts of the neck, shoulder, forearm, hand, and the little finger. The C8 dermatome is an area of skin that receives sensation through the C8 nerve.This nerve has a sensory root and a motor root. The C8 spinal nerve exits the spinal cord in between the C7 and T1 vertebrae through a small bony opening called the intervertebral foramen. This disc protects the vertebrae by providing cushioning and shock-absorbing functions during neck movements. A disc made of a thick fibrous ring (annulus fibrosus) that surrounds an inner gel-like material (nucleus pulposus) is situated between the C7 and T1 vertebrae. These vertebrae are held together with ligaments at multiple attachment points. T1 connects to the first rib with costovertebral joints.T1’s spinous process projects at a more downward angle and may not be as prominent. C7 has a longer spinous process (bony protrusion), which can be felt in the back of the neck.C7, also called vertebra prominens, is the last cervical vertebra.These vertebrae are connected by a pair of facet joints in the back and each has a vertebral body, 2 pedicles, 2 transverse processes (bony humps on the side where muscles can attach and pull on the vertebrae), 2 lamina, and a spinous process. The C7-T1 motion segment includes the following structures: (Bottom) Illustration of a cervical vertebra showing the locations of the spinal cord in the vertebral foramen, spinal nerves, meninges surrounding the spinal cord, and intervertebral disc separating the bodies of articulating vertebrae.Anatomy of the C7-T1 Spinal Motion Segment (Top) Anatomical model of a cervical vertebra. ![]() C 7 however, has an unbranched spinous process that is so prominent that it can easily be observed and felt through the skin (called vertebra prominens).Ībove: A cervical vertebra, superior view. Additionally, cervical vertebrae are roughly triangle-shaped and C 3 through C 6 have spinous processes that have two branches ( bifurcated). These transverse foramina serve as passages for paired vertebral arteries (right and left) traveling to the head. The cervical vertebrae are easily distinguished from thoracic and lumbar vertebrae not only by their size, but also because they have foramina in their transverse processes whereas the other vertebrae do not (with the exception of C 2). All of the cervical vertebrae are smaller in size compared to thoracic and lumbar vertebrae. ![]() The structures of C 1 and C 2 are distinctive and are covered below. The skull articulates with C 1 via the occipital condyles. There are seven cervical vertebrae (C 1 through C 7). \)Ībove: Lateral view of the skull with the occipital bone (and its occipital condyles) colored green and the first cervical vertebra or C 1 (articulates with the occipital condyles) colored pink. ![]()
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