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Lately, some of people declared to have endured a lombalgie during the last twelve months. "Tower of kidneys" or "kidneys in compote", the reasons can be numerous, from where the importance of a very good diagnosis. Let's retail the origins of the pains of the low part of the back. The script is unfortunately too classic: you bend to tie your shoes, an electric discharge browses you the leg. Your back has just remembered simply to you while making you pay for the invoice of the numerous years of carelessness and inconsiderate efforts. ..The neuralgias of lumbar origin: of lumbago to the hernia discale When you suffer from a lumbar origin neuralgia, it is often that the core of the vertebral disk. or a fragment of this one. has just been expelled of the fibrous ring. This action frees some enzymes (notably the A2 phospholipase) to the very strong inflammatory power. The pain would be therefore, above all, the consequence of the inflammation of the nervous root by these enzymes.
All compression of the angry nerve maintains the phenomenon. If the hernia is located in the posterior part of the disk, it can be to the contact of the rachidian nerve. It is then the electric discharge by irritation and compression of the nerve, and the pain can propagate itself all along this nerve. According to the vertebral floor of the nervous root, it can be about a sciatica (nerve sciatica that innerve the posterior part of the thigh and the leg) or of a cruralgie (femoral nerve that innerve the previous part of the thigh). ..Lumbago or the "tour of kidneys" The history of lumbago is always the same, to some variants near. It is the misadventure of the one that arrives to the ticket window to pay for his place of movies. He makes fall his purse, bend to collect it and stand up brutally. Result: he never saw the movie. Or it is the neighbor's history that wanted to play the Hercules while raising a bag of cement of too much. He bent forward in the impossibility to stand up, grinning of pain to the least movement. What is himself he passes? It is simply about a beginning of lumbago whose first demonstration is a deterioration discale. This deterioration discale occurs most of the time when one raises a heavy object. We are bent then in two, the stiff legs, the buttocks in air. The core discal is immediately pressed by several hundreds kilograms, then violently embossed behind at the time of the effort of uprising. It is to this precise instant that in his displacement the core discal tears several thickness of the fibrous ring. The pain is provoked then by the irritation of the fibers of the nerve vertebral sinu that innerve the periphery of the disk. The pain provokes a reaction of defense, from where the painful contraction the lumbar muscles. ..The articular lombalgies of origin posterior Let's recall that the vertebras articulate between them through the intermediary of the intervertebral disk and two joints. In all movements, these joints play guide's role, the mechanical constraints being supported, for the essential, to the lumbar floor by the intervertebral disk (80% of the loads). The lombalgies due to these posterior joints corresponds to an overcharge or a prolonged pressure consecutive to a bad position. They can appear at the children and the teenagers by an accentuation of the lumbar lordose, especially at the girls, or at the time of sporty overworkings. At the aged people, the absence of alternation of compression and decompression of the intervertebral disk alters the cartilaginous surface of the joint quickly and it is then the beginning of the osteoarthritis. The overcharge often comes from an overweight, but also of a discarthrose (ageing of the disk). From then on, the disk not playing his role anymore, the weight of the body is supported then by the posterior joints. It is whereas some painful inflammatory reactions can result from the hyperactivity imposed to the joints and that provokes the irritation of it. 2008-12-06
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