The research on novel scaffold materials is now characterized by a transition from single element to composition, from inert materials to bioactive materials, and from macro- level to micro- level. With the rapid development of nano- technology and life sciences, the two concepts of nano- modification and biomimic construction joined the mainstream of the scaffold research. And in this field, the theory of bone generation net has been recently explored systematically and comprehensively. As a result, it has now become a research focus to obtain ideal bioactive scaffolds on the basis of current investigation. This paper highlights several types of promising scaffolds, discusses their recent research and application, and reviews the present situation concerning bioactive scaffolds

Objective To explore the clinical effect of different scheme of moxifloxacin and levofloxacin for elderly multi drug resistant pulmonary tuberculosis.Methods 136 cases of elderly patients included in the study were randomly divided into the observation group 1 and observation group 2 with 68 cases in each group according to the sequence in group.The observation group 1 used moxifloxacin regimen for treatment of pulmonary tuberculosis while the observation group 2 used levofloxacin regimen.The two groups were treated for 18 months and observed the clinical curative effect,and the sputum negative,pulmonary lesions absorption,empty changes and adverse reactions.Results The total efficiency of the observation group 1 was 92.6％,which in the observation group 2 was 72.1％,the total efficiency of the two groups had a significant difference (x2 =9.917,P =0.002) ;the sputum negative conversion rate of the observation group 1 at the end of 3 months was significantly higher than that of the observation group 2 (x2 =4.115,P =0.043),no significant difference was found at the other time points (all P ＞ 0.05) ; after treatment,the obvious absorption + absorption of lung lesion in the observation group 1 was 59 cases,accounting for 86.8％,that in observation group 2 was 48 cases,accounting for 70.6％,two groups of lung lesions absorption had significant difference (x2 =5.303,P =0.021) ; the pulmonary cavity closure + reduced in the observation group 1 was 52 cases,accounting for 76.4％,that in the observation group 2 was 41 cases,accounting for 60.3％,with significant difference between the two groups (x2 =4.115,P =0.043) ;there was no significant difference in adverse reaction of the two groups (P ＞ 0.05).Conclusion Moxifloxacin anti tuberculosis regimen has a better curative effect in treatment of elderly patients with multi drug resistant pulmonary tuberculosis,which should be expanded the application.