What kind of diseases (illnesses) are common in the spine?
The spine deforms due to various causes such as age-related changes and excessive strain.
The cervical spine (neck) and lumbar spine (hip) are particularly susceptible to deformation.
For each, the most common diseases are
Cervical spine: cervical disc herniation, cervical spondylotic myelopathy
Lumbar spine: Lumbar disc herniation, lumbar canal stenosis, etc.
Cervical spondylotic myelopathy
Cervical spondylosis is a condition in which nerves are compressed due to deformation of the intervertebral disc, vertebral body, and ligamentum flavum due to changes with age. When the pressure exceeds a certain limit, various symptoms appear. In particular, spinal cord symptoms often occur, and this condition is called cervical spondylotic myelopathy. Symptoms such as numbness of fingers, skillful movement disorders (fasten the button, use of chopsticks), and difficulty in walking are observed.
Cervical disc hernia
The intervertebral disc is the cartilage that acts as a cushion between the bones of the spine. A state in which this disc is damaged and crushed, the contents (nucleus tissue) pop out, and the cervical spinal cord and nerve roots are pressed is called disc herniation. Symptoms include pain on the back of the neck, pain on the inside the scapula, pain from the shoulders to the arms and fingers, and pain in the arms and hands when the neck is bent backwards.
Lumbar canal stenosis
With aging, the intervertebral disc gradually loses water and deforms into a crushed shape, but at the same time, the vertebral body also changes shape, and its horns become sharp. In addition, as the ligamentum flavum becomes thicker, the spinal nerves are compressed from the ventral and dorsal sides by the intervertebral disc, vertebral body, and ligamentum flavum. If this exceeds a certain limit, you will experience pain and numbness in your legs.
If you walk a certain distance, you may feel pain or numbness in your legs. However, there are peculiar symptoms such as being able to move as much as you want by bicycle and not hurt no matter how much you walk while pushing the shopping cart.
Lumbar foraminal stenosis
Nerve branches (nerve roots) go out through the bony window (intervertebral foramen), and the disease in which the window narrows and the nerve branches are tightened is called lumbar foramen stenosis.
nerves are compressed in the intervertebral foramen
pain and numbness from waist to legs
Symptoms are very similar to lumbar canal stenosis. Movements such as walking a certain distance, standing for a certain period of time, or standing and bending back can cause pain or numbness in the legs. Diagnosis is often difficult with MRI alone, so it is often overlooked. In particular, those who have undergone surgery with a diagnosis of lumbar canal stenosis but whose symptoms do not improve so much may actually have this disease.
Not only the cartilage (intervertebral disc) between the hip bones, but also the ligaments and joints on the ventral and dorsal side of the hip bones are deformed, so that the bones and ligaments do not work sufficiently as support. The hip bones then shift back and forth, narrowing the spinal canal. This condition in which the hip bones are displaced back and forth is called lumbar spondylolisthesis. Nerves are chronically compressed by the vertebral bodies, intervertebral discs, and ligamentum flavum, causing symptoms similar to lumbar canal stenosis.
normal lumbar spine
the hip bones shift back and forth, compressing the nerves inside