[Partial reflex sympathetic dystrophy in its radial form].
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Biomedical subjects
Publications and source records attributed to L Simón.
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Diabetic cheiroarthropathy is a periarticular pathology that concerns diabetes mellitus, especially the insulin-dependent and long-term variety. Normally it is asymptomatic and consists of a pain-free limited extension of the metacarpophalangeal and/or proximal interphalangeal joints, with a spontaneous posture of slight flexion in the fingers. It can be accompanied by other rheumatological pathologies usually associated with diabetes.
The elbow is a location where algodystrophy is rarely established. When algodystrophy affects the elbow it usually does it in a secondary way, being part of a shoulder-hand syndrome. However the original affectation of the elbow, outside this context, is even more exceptional. In this work we present two cases of algodystrophy originally found in the elbow and we revise the characteristics of this location.
Algodystrophy is a pathology of the adult which rarely affects children. During childhood, it may appear between the ages of 3 and 16 years, with great prevalence among the female sex. It is usually associated to predisposing factors and the most frequent starting factor is of a traumatic nature. It affects mainly the lower limbs. From a clinical perspective, it is characterized by hyperesthesia and cutaneous hypothermia. The radiological findings are usually normal during the whole evolution and the bone gammagraphy usually shows hypofixation. The evolution is generally favourable. It can be clearly distinguished from algodystrophy in the adult due to its higher prevalence among the female sex, the already mentioned clinical aspects, the radiological normality and the isotopic hypofixation.
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Biphotonic absorptiometry has begun to demonstrate its usefulness in the field of osteoporosis. In algodystrophy, the radiology and the degree of isotopic fixation suggest a bone disorder, although both techniques are unable to objectively quantify it. Biphotonic absorption is an scanning technique which allows the quantification of bone demineralization in the segment affected by algodystrophy and its evolutive follow-up.
Pregnancy is a potential cause of hip algodystrophy. Mechanical loco-regional factors, as well as other potential factors, can explain this preference for the hip. This pathology must be always kept in mind when attending a pregnant patient or a patient with inguino-crural pain and functional impotence during the postpartum.
The accumulation of histone H1(0) as been studied in neuronal and glial nuclei from rat cerebral cortex during postnatal development. In neurons H1 degrees represents approximately 2% of the H1 content at birth and remains unchanged until day 8. Beyond this point H1 accumulates rapidly until day 18, where it levels off at 16% of H1. The midpoint of the transition is at day 14. In glial cells H1 represents approximately 2.5% of the H1 at birth. It starts to accumulate between days 18 and 21; its concentration raises rapidly up to day 30 slowing down from then on. At day 300 (the farthest point examined) it represents 21% of H1. These results are discussed in relation to the events of the postnatal development of the cerebral cortex in the rat. It is concluded that H1 probably does not suppress cell proliferation.