In 1984 the collective monograph ” Osteochondrosis in the spine” gave the definition of the disease: Osteochondrosis – is the most severe form of degenerative-dystrophic lesions of the spine, which is based on degeneration of the disc with subsequent involvement of the adjacent vertebral bodies, intervertebral joints and ligamentous apparatus. In each of the vertebral column for osteochondrosis localization is typical.
In 1980-90-ies theory of preemptive myogenic origin of dorsalgia became the dominant. Many clinicians believe that almost 90% of cases of back pain are manifestations of myofascial syndrome.
However, vertebrogenous factor in the development dorsalgia should not be underestimated. Vertebrogenic reasons of dorsalgia are degenerative-dystrophic diseases of the spine and their manifestations such as disc hernia, deforming spondylosis, spondylarthritis.
To a greater extent with the pain syndrome diseases are connected that are not associated with degenerative-dystrophic diseases of the spine: sacred ones, lumbolization, ankylosing spondylitis, osteoporosis, Bechterew’s disease.
Pulposis kernel unchanged intervertebral disc that is to say a homogeneous mass, which is bounded by fibrous ring and terminal cartilaginoid plates adjacent vertebral bodies above and below.
As we age, the number of mucopolysaccharides reduce and change in their qualitative composition that leads to a decrease in the content of the liquid in the nucleus. The nucleus loses its properties of the gel, the disc itself becomes thinner and loses its function of elastic body. In addition, the weakening of adhesion between the plates of collagen fibrous ring, there is a tension ring and the appearance of a cavity. These processes are taking place against a background of progressive atrophy of the vessels supplying intervertebral discs. Replacement of blood supply to the diffusion mechanism, which effectiveness is much lower, leads to significant changes of pulposis nucleus. There are cracks and breaks in the fibrous ring, formed with intervertebral herniation.
Vertebrae are composed of inner spongy and compact external substances. Spongy substance in the form of bone beams provides strength vertebrae. External compact substance consists of lamellar bone tissue, providing the hardness of the outer layer and the possibility of the vertebral body to take the load, such as compression when walking. Inside the vertebrae, except for bone girders, is the red bone marrow, which has a function of hematopoiesis.
Bone structure is continuously updated: the cells of the same type employed expansion of bone tissue, a different type – its update. Mechanical forces, stresses to which the vertebrae to stimulate the formation of new cells. Enhancing effects on bone leads to accelerated formation of more dense bone tissue, and vice versa. To explain the pathogenesis of degenerative-dystrophic diseases of the spine put forward different theories.
In the involutive basis of the theory is the assumption that the cause of degenerative-dystrophic diseases of the spine – the premature aging and depreciation of intervertebral discs.
At the heart muscle of the theory of the cause of the emergence and development of degenerative-dystrophic diseases of the spine was considered a constant tension of muscles or hypotonia of muscles, inflammation of muscles and ligaments. Some authors believe that the basis for the development of degenerative-dystrophic diseases of the spine is the creation of the wrong muscle motor stereotype, which leads to mechanical overload of the components of the intervertebral segment and ultimately – to the emergence of processes of degeneration and involution.
Supporters of the endocrine and exchange theories tried to link the emergence and development of degenerative-dystrophic diseases of the spine with endocrine and metabolic disorders. The theory of heredity suggests a hereditary predisposition to the development of degenerative-dystrophy diseases of the spine.
To learn more about sciatica and sciatic nerve in particular – please visit this site with helpful sciatica-related info.
And please pay your attention to the simply fact that right now we all live in the world where information quickly enhances the quality of our life.
Due to this if you are properly armed with the info in your topic you can rest assured that you will always find the way out from any bad situation. So, please make sure to visit this site on a regular basis or – the least time consuming way of doing it – sign up to its RSS. Thus you will have a direct shortcut to the freshest info updates here. Blogging can be helpful, you just need to understand how to use them.
RSS FEED
