Cervical spinal stenosis etiology
see Cervical spondylotic myelopathy.
Cervical spinal cord dysfunction can result from either traumatic or nontraumatic causes, including tumors, infections, and degenerative changes.
Cervical spinal stenosis is usually caused by age-related changes in the shape and size of the spinal canal and so is most common in people older than age 50. The aging process can cause a “bulging of the discs”—the spongy discs between the bones of the spine bulge out farther than normal—or a thickening of tissues that connect bones (ligaments). Aging can also lead to destruction of tissues that cover bones (cartilage) and excessive growth of the bones in joints. These conditions can narrow the spinal canal (spinal stenosis).
In rare cases, the spinal canal is narrowed from birth because of the way the bones are formed.
Cervical spinal stenosis is a defining feature of cervical spondylotic myelopathy (CSM).
The etiology of cervical spinal canal stenosis is divided into congenital or acquired etiologies.
Congenital etiologies
achondroplasia
anterior vertebral beaking or wedging
early vertebral arch ossification
thoracolumbar kyphosis
vertebral segmentation failure
Acquired etiologies
Degenerative
see also Degenerative cervical myelopathy etiology
Hypertrophy of the facet joints
Hypertrophy of the cervical ligamentum flavum.
Hypertrophy of the posterior longitudinal ligament.
Ossification of the cervical ligamentum flavum.
ligamentum flavum calcification
posterior longitudinal ligament ossification
stenosis secondary to disc herniation
spondylolisthesis
spondylosis
scoliosis
systemic
Cushing syndrome
acromegaly
hyperparathyroidism
ankylosing spondylitis
Paget's disease
iatrogenic
previous spinal fusion
previous spinal instrumentation
infectious
osteomyelitis
Traumatic
Association with spinal cord injury
There are few reports regarding surgical management of multilevel cervical spinal stenosis with spinal cord injury.