Objective To investigate the manifestations of myodystonia for recognizing it.Methods Symptomatic myodystonia,relationship between the age of onset and the affected sites,the main clinical types and sex in 292 consecutive cases of myodystonia by retrospective reviewed.Results Symptomatic myodystonia was found accounting for 21.23% in all cases and its major cause was perinatal stage anoxia.Patients who had had early onset (

[Objective]To analyze the relation of age and sex with the incidence of physical examinees with osteoporosis and low bone mass of vertebras.[Method]Quantitative CT(QCT) was used to examine and analyze the lumbar bone mineral density in 575 physical examinees.The data was analyzed by statistical software SAS 9.0.[Result]Bone mineral density(BMD)decreased with age after 50 years old.The occurrence rates of osteoporosis were 56.34% for females at 50-59 years,87.80% at 60-69 years,97.22% at 70-79 years and 100% at 80-89 years,25.44% for males at 50-59 years,50.64% at 60-69 years,66.66% at 70-79 years,and 90.91% at 80-89 years.[Conclusion]The incidence of osteoporosis is positively related with the age.The occurrence rate of osteoporosis increases with increasing age.It is obviously higher in females than in males.

[Objective] To evaluate the clinical value of diagnosing osteoporosis with vertebra bone mineral density(BMD) by measurement with quantitative computed tomography (QCT) . [ Method] BMD in of lumbar vertebrae (L<,1～4>)were measured by QCT in 53 healthy middleaged persons or elderly persons (group A) and 68 osteoporosis patients ( groupB) . [Result] BMD in group A declined obviously as age increasing with significant differences (P<0. 01) . In group B,all 68 patients showed osteoporosis according to the diagnostic standard of BMD≤x -2. OSD. Sixty patients showed osteoporosis ifthe diagnostic standard was set to BMD ≤ x -2. 5SD. The BMD values of different age group was lower than the bone quantityblock values. [Conclusion] As a method for diagnosing osteoporosis, QCT has advantages of high sensitation, being precise,being reproducible and is easy for applying. It would be more practical and could decrease mis - diagnosing if the diagnosticstandard was BMD≤x-2.OSD.

Objective To study the therapeutic effects of low frequency repetitive transcranial magnetic stimulation(rTMS)in cranial dystonia.Methods Twenty cranial dystoina patients were treated with low frequency rTMS.Their motor threshold,cortical silent period(CSP)were evaluated before and after the rTMS and after 1,2,6 months as well as the spares and Toronto Western Spasmodic Torticollis Rating Scale(TWSTRS)to evaluate the effects of rTMS in the treatment of cranial dvstonia.Results The patients scored(23.5±14.0)significantly lower after l and 2 months(17.6 ±14.3,18.5±14.2,t=2.632,2.149.both P<0.05).But there was an increasing tendeney of the score after 2 months.The 2-month efficient rate of low-frequency rTMS Was 60%(12/20),yet the long-term effect of rTMS was still to be studied.There was a very significant improvment of relaxed(46.5%±7.3%vs49.9%±9.2%,t=-3.235.P<0.05)and active threshold(40.2%±5.9%/)5 43.9%±8.8%,t=-2.339,P<0.05),prolongation of CSP((96.1±24.5)ms vs(121.6±27.7)ms,t=-7.223,P=0.000).Conclusion The low frequency rTMS is efficient to relieve the clinical symptoms of cranial dystonia.