What is it?
It is a bone disease causing mechanical pain and a non-homogeneous demineralization of the bones with trophic disorders (skin and dander: nails, hair).
The dystrophy results from a disturbance vasomotor itself linked to a dysregulation of the autonomic sympathetic nervous system. The arterioles and capillaries system located in the os hangs in vasodilation. The segment reached member is so red and swollen.
A spasm then occurs followed by active vasoconstriction. The member becomes cold. Hair fall, nails break.
Tendons and fascia retractions were not slow to occur. Autonomic dystonia is often associated. Continue reading “The algodystrophies”
What is it?
It is localized aortic dilation.
The aneurysm may sit on one of the five segments of the aorta:
-The thoracic aorta: bottom-up part, horizontal portion, top-down portion;
-The sus-renal abdominal aorta (above the start of the renal arteries);
–Abdominal aortic aneurysm sous-renale (at the bottom of the departure of the renal arteries).
-Men are much more affected than women.
-Abdominal aortic aneurysm button 6 to 7% of the general population.
Causes and risk factors
Atherosclerosis is the main cause. Syphilis often causes of aneurysms of the thoracic aorta. Other causes (thoracic trauma, infective endocarditis, sepsis, elastic fabric, polyarteritis nodosa… disease) are more rare.
Spontaneous evolution is dominated by the risk of rupture often heralded by the appearance of painful signs in the territory of the aneurysm. If broken, death is immediate.The probability of failure is greater for large aneurysms (more than 6 cm in diameter). Continue reading “The aortic aneurysm”