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Authors report on the results of the operative fusion of the lumbar spine performed by them between 1 March 1987 through 31 December 1990. Based on the assessment of 243 cases they call attention to the importance of the correct indication and operative technique and of the close supervision. It is stated that the use of the internal fixation improves the results of the operative fusions.

It was found as a result of preclinical experimental examinations, performed in Hungary and Japan that Ipriflavone stimulates calcitonin secretion through increasing the oestrogene effect. Its effect of hindering bone resorption works presumably also this way. Authors report on experiences and results gained in 408 treatment years of 114 primary and secondary osteoporotic patients. The results of clinical experiments in Hungary, Japan and Italy are similar. The treatment with Osteochin and calcium is an effective therapy of osteoporosis. The progression of the loss of bone mass can be hindered, the number of bone fracture is diminished in proportion of time and the method proved to be effective in 79 per cent of the patients. Out of the gastric complaints, found in 5.5 per cent of the cases no side effect was observed.