Objective To investigate the effeit of Reconstruction of tantalum metal rod implantation in the treatment of early ischemic necrosis of femoral head( Steinberg Ⅰ～Ⅱ period) ,to explore the early femoral head ischemic necrosis of minimally invasive treatme(n)t. Method 24 patients( Steinberg Ⅰ～Ⅱ period) using C-arm fluoroscopy machine,under the greater trochanter through the neck hole to avascular necrosis zone,the first zone of the medullary sclerosis core decompression, re-implantation of tantalum rod to the subchondral bone is about 0.5 cm, through the Harris score before and after surgery for comparison. Results After follow-up 9(2 ～ 12) months,preoperative pain and function were significantly limited nuitigation. The excellent rate was 83% after opertion. MRI manifestations in patients with stable,non-ischemic necrosis increased performance. Conclusion Core decompression can significantly reduce the pressure on the femoral head hardening region, tantalum rod weight-bearing area of femoral head implant provides a structural support for subchondral bone. This method has the characteristics decompression,structural support,minimally invasive,it is worth for clinical use.

Objective To explore the epidemic trend of influenza and pandemic virus variation in Maanshan, and to provide scientific basis for the prevention of influenza. Methods The ILI data of monitor hospitals and some ILI nasopharyngeal specimens were collected, then influenza virus was isolated by MDCK cells, and influenza serotypes were identified by HI. Results 15 904 cases of ILI were reported from 2006 to 2007. The detectable rate of influenza like illness in outpatients was 6.63%. 2 656 nasopharyngeal specimens of ILI were collected, and 358 strains of influenza virus were isolated, with isolation rate of 13.48%, of which 142 were H1N1 subset influenza A virus, 49 were H3N2, 72 were Victoria subset influenza B virus, and 96 were Yamagata. Conclusions During 2006 and 2007 two peaks of influenza-like illness in outpatients was in winter-spring and summer seasons of each year. More attention meeds to be paid to the monitoring of influenza.