ABSTRACT
Objective To develop manipulator to tow and rectify lumbar kyphosis instead of pressing with hands and heels when trying to cure the lumbar disc herniation.Methods Combining the electronic and mechanical application technology,a reasonable and complete scheme was designed and established.Results The mechanization and automation of the treatment process is realized.The labor of medical staff is reduced and the symptoms of sufferers are relieved.Conclusion Lumbar kyphosis rectifying manipulator provides a new method to cure lumbar kyphosis.It's a perfect lumbar kyphosis rectifying tool with a lot of strong points,such as easy operation,concentrated force,desire effectiveness,high security,etc.It has good application foreground.
ABSTRACT
Objective:To investigate whether lanthanum(La 3+)can enter into ossification induced bone marrow stromal cells(BMSCs)cultured in vitro and its influences on the ultrastructure of BMSCs.Methods:Dog BMSCs were ossification induced and the cells of the third passage were cultuerd with the presence of lanthanum chloride(LaCl_3)at 5.564?102,5.564 and 5.564?10-2 ?g/ml respectively for 5 days,the same passage cells without LaCl_3 treatment were used as the controls.Transmission electron microscope(TEM),electron microprobe with wave spectrum(EMWS)and high resolution TEM with energy spectrum(HRTEM)were used to observe the change of BMSCs ultrastructure and the distribution of lanthanum ions in the cells.Results:Electron-dense granules in lysosome were observed in BMSCs treated with LaCl_3 but not in control BMSCs under TEM.Slight denaturation of some organelles was found in both LaCl_3 treated and control cells.EMWS examination showed that there was La element in BMSCs treated with 5.564?102 ?g/ml LaCl_3.La element was not found in all the treated cells under HRTEM.Conclusion:La 3+ at a certain concentration might enter into the ossification induced BMSCs cultured in vitro.