RESUMEN
Objective:To compare the therapeutic outcomes between use of antibiotic cement versus non-use of antibiotic cement in the treatment of tibial osteomyelitis after radical debridement.Methods:A retrospective analysis was made of the 68 patients with local tibial osteomyelitis of Cierny-Mader Type Ⅳ who had been treated at Department of Orthopaedic Trauma, The Second People’s Hospital of Shenzhen from January 2010 to June 2015. The dead space was filled with antibiotic-impregnated bone cement beans after radical debridement of the infected bone in 32 of them (cement group) but was not in 36 of them (no-cement group). The operations for both groups were performed by the same surgical team who filled the bone defects after excision of infected bone using Ilizarov bone transport. The 2 groups were compared in terms of Paley functional scores of bone and limb, external fixation index (EFI), infection recurrence rate, total hospital costs and other complications.Results:The 2 groups were comparable because there was no significant difference between them in the preoperative general data ( P>0.05). The cement group was followed up for (71.2±8.9) months and the no-cement group for (71.6±9.7) months, showing no significant difference ( P>0.05). By the Paley functional scores, the good to excellent rate for bone was 100% for both groups (32/32 versus 36/36) while the good to excellent rate for limb was 93.8% (30/32) for the cement group and 94.4% (34/36) for the no-cement group, showing no significant differences between them ( P>0.05). The EFI was (49.0±10.5) d/cm for the cement group and (49.5±11.4) d/cm for the no-cement group, showing no significant differences between them ( P>0.05). The infection recurrence rate at the final follow-up was 3.12% (1/32) for the cement group and 2.78% (1/36) for the no-cement group, showing no significant differences between them ( P>0.05). The total hospital cost was (70,944.1 ± 1,135.5) Yuan RMB for the cement group and (55,205.2 ± 897.3) Yuan RMB for the no-cement group, showing a significant difference ( P<0.05). No serious complications with sequelae were found in either of the 2 groups. Conclusion:In the treatment of local tibial osteomyelitis of Cierny-Mader Type Ⅳ, it is not necessary to fill the dead space with antibiotic cement when radical debridement is achieved.
RESUMEN
In order to obtain the serotype distribution of E.coli from duck and to screen the vaccine bacterial strains,the serotype identifications and biological characteristics of E.coli were analyzed in recent years from Shandong,Hebei and other areas of commercial duck field;selections of vaccine strains were detected by the virulence and immunogenicity.Totally 44 isolated bacterial strains of E.coli from duck were identified to a total of six serotypes:O78,O93,O76,O2,O92 and O32.The O78 serotype was the dominant serotype,accounting for 56.8％ (25/44);O93 serotype for 15.9％ (7/44) according to bacterial Oantigen typing.The strain SD (O78 serotype) was confirmed to have strong virulence and good immunogenicity.The O78,O93 and O76 are the dominant serotypes of duck E.coli in the study areas.The SD strain could be used as the candidate for the next development of inactivated vaccine.