Objective To explore the efficacy of double fork plate in treating the posterior wall fracture of the acetabulum.Methods Reviewed 11 patients who had treated with open reduction and internal fixation with double fork plates for posterior wall fracture of the acetabulum from July 2008 to July 2012,including 8 male cases and 3 female cases with an average age of 35.3 years(from 22 to 53 years).The average time from getting injury to operation was 7.8 days(from 1 to 19 days).The operations were performed through the Kocher-langenbeck approach.Double fork plates(formed from a three-or four-tubular plate) with an overlapping reconstruction plate used for posterior wall fragments.The functional outcomes were evaluated by the modified Merled'Aubigne and Postel'clinical garding system.The radiographs were graded according to the Matte criteria.Rmults The patients were adopted telephone or outpatient follow-up for 25 months on average(from 12 to 33 months).By the Matte criteria,7 cases achieved excellent reduction,3 good reduction,1 case fair reduction and none poor reduction,with the good and excellent rate of 90.9％.By the modified Merled'Aubigne and Postel'critria,functional recovery of the affected hip at the last followe-up was rated as excellent in 6 cases,good in 3 cases,fair in 2 cases and none poor,with the good and excellent rate of 81.8％.Heterotopic ossification was happened to 1 patient.Neither infection nor ischemic necrosis of the femoral head was recorded.Coclusion Double fork plates with an overlapping reconstruction plate can provid stable fixation and allow for early functional exercise.So the use of Double fork plates have a certain clinical value.

Objective To investigate the characteristics and the operative treatment effect of pelvic fractures complicated with lumbosacral plexus compression injury. Methods From January 2000 to January 2009, 19 patients (13 males, 6 females; mean age 34.7 years) of pelvic fractures complicated with lum-bosaeral plexus compression injury were treated by surgical fixation and neural decompression. The diagnosis of nerve compression were determined by analyzing the clinical manifestation and X-ray and CT imaging findings. The injured nerve were decompressed directly by remove the fracture fragments or callus which compressed the lumbersacralis plexus nerve. Eight cases of nerve decompression were through posterior ap-proach, six through anterior approach, and five through combined approach. Sixteen cases of unstable pelvis fractures were treated by open reducton and internal fixation. Results Seventeen patients were followed up. The mean follow-up time was 27 months (12-72 months). The fractures were clinically healed at 10.6 (8-14) weeks. Regarding the Neural Function of the lower extremity, 12 cases had achieved full recovery, 4 cases had recovered partly, 1 case had no change. Four of the six patients who have bladder and bowel dysfunc-tion had fully recovered while the other two patients still have urinary dysfunction. Conclusion Early and accurate diagnosis of the lumbosacral plexus compression injury accompanied with pelvic fractures were very important. It was key to better outcomes that early decompression the lumbosacral plexus and surgical fixa-tion the pelvis fractures are carried out after injury.

Objective To observe the effect of ammonia silver nitrate on early caries.Methods 100 cases of children with early caries treated in our hospital from April 2015 to December 2016 were admitted to conduct research and analysis.The children were divided into the control group and the observation group by double blind,and random method 50 cases in each group.The control group was treated with caries removal,the observation group was treated with carious worn out joint ammonia silver nitrate.After treatment, the two groups of children suffering from dental pulp tissue TNF-a, IL-8 concentration, the recurrence rate, filling rate falling, the rate of suffering from pulpitis, pain conditions were analyzed.Results After treatment, the observation group with TNF-α, IL-8 concentrations were lower than the control group(t=21.961,t=23.836), the difference was statistically significant (P<0.05);The recurrence rate, suffering from pulpitis rate was significantly lower than the control group, and the difference was statistically significant (P<0.05);the observation group after treatment in children with severe pain and painless was significantly lower than the control group, and the difference was statistically significant (P<0.05).Conclusion Ammonia silver nitrate is an effective and safe treatment for early caries, which can relieve the pain and discomfort in children, it is a safe and effective method of treatment and should be promoted and used in the clinic practice.

In order to collect infection surveillance data from hospital to unfold scientific research, infection surveillance information platform based on B/S structure is designed adapting with the object - based technology. The general structures, the possibility of tech-nology realization, function installation and major process of finishing a mission are explained in detail in the paper. Using this platform could not only realize the data sharing between researchers and clinicians but also promote the prevention and control of infection in hospital.

Objective To investigate the drug-resistant status of Acinetobacter baumannii in clinical strains isolated from our hospital,and get to know the distribution of integrons carried by Acinetobacter baumannii,analyze the correlation between integron and drug-resistant of Acinetobacter baumannii..Methods Collected 85 Acinetobacter baumannii isolated in our lab,the drug-sensitivity tests were completed by the method of KB,the integrase genes were amplified by polymerase chain reaction(PCR),and identified the type of integron..Analyzed the correlation between the drug-resistant and integron in Acinetobacter baumannii..The open reading frame of integron were amplified by PCR,the polymorphism of integron was identified,and sequenced the PCR products.Results Except for Imipenem and Cefoperazone/ sulbactam(drug resistant rate less than 10%),the drug resistant rate of other 15 antibacterial was no more than 30% among the 85 Acinetobacter baumannii isolated in our lab..66.1 %(57/85) stains carried the integrons I,we didn't find out the integron Ⅱ and Ⅲ.The drug-resistant rates of Acinetobacter baumannii with integron were higher than that of Acinetobacter baumannii without integron.The length of amplified products in variable region of open reading frame of integron varied from 03 to 25kb,.The sequencing results confirmed the integron included multidrug resistant gene code.Conclusion In our hospital,the drug-resistant rate of Acinetobacter baumannii was high,and the majority were multidrug resistant strains.The drug-resistant rate of Acinetobacter baumannii was enhanced with integron,The multidrug resistant of Acinetobacter baumannii was associated with integrons.

[Objective]To introduce micro-trauma technic with small incision treating the vertical fractures of the sacrum by intrasacral rod and evaluate the preliminary clinical outcomes.[Method]A total of 13 cases(9 males and 4 females) were treated with micro-trauma technic by intrasacral rod.The age ranged from 18 to 63 years,mean 36 years.Of all,6 cases were treated with anterior pelvis fixation,7 cases had sacral plexus injury.[Result]The operation lasted for 40～75 minutes(averaged 54 minutes) and hospitalisation period ranged from 8 to 20 days(averaged 11 days).A follow up lasted 9～24 months(averaged 17.5 months) in 12 patients.Ten cases were free from sacroiliac pain,2 cases had a slight pain. In 7 sacral plexus injury patients,6 cases completely recovered.[Conclusion]Micro-trauma technic with small incision treating the vertical fractures of the sacrum by intrasacral rod is a safe and effective method and has the advantages of minor trauma,less complication,short operation time and quick recovery.

Objective By developing ultrasound picture archiving and communication system(PACS),to implement networking of ultrasound imaging equipment, central image storage and standardization of computer-aided diagnosis report.Methods Ultrasound image workstation was develop to acquire, display, manipulate and print ultrasound static and dynamic images using C++ computer language. Also, all ultrasound equipments in department formed the DICOM network . Central image server and ultrasound information system server we re connected together with all workstations by computer Ethernet network, thus, using switch, and connecting to hospital internet WWW server to distribut the image and report. Results Ultrasound DICOM digital images and high quality video image successfully acquired, displayed, processed and network communicated, seamless integrated with hospital information system, functions such as image central storage, computer-aided report and sharing printing were implemented. Conclusions Application of ultrasound image management system improves the administration and increases work efficiency in imaging diagnosis, promotes the reform of working pattern of doctors and provides more convenience for work, research and study. Image systems highly increase the level of patient care service. Standardization of medical reports computer-aided is superior to handwritten report.

In cooperation with a District Health Station of Beijing, 13 nurseries were selected for the study of the practice of diet planning. At the beginning, the health workers of the selected nurseries -were gathered together at the station to attend a short-term class. Lectures were given on the basic knowledge of child nutrition, the methods of dietary survey and diet planning, i.e. using the proper amount of the cheaper but more nutritive foods to make essentially balanced diets according to the RDA. The health workers of the nurseries meet and comunicate once a month at the health station to calculate the monthly food consumption and the average daily intake of the nutrients of the children in the past month and to make plan for the next month. The body weight of the children were measured every month and the height at three months intervals. The data collected in 12 months were summarized. The results indicated that the yearly average intake of most nutrients by the children increased and their collective growth level in weight and height increased correspondingly during the one year period of diet planning without any increase of the boarding expense of the children.

In the early days, the standards for body height and weight of man were usually derived from the anthropometric data of retrospective studies, and the growth standards for children were also constructed from data of the same nature. The population thus measured consisted of the so-called "normals", i.e. excluding the anatomical abnormals and those with apparent chronic diseases. It is evident that the body size, particularly the height, of most of the boys and girls measured might not have attained their optimal stage.It is well recognized now that, within the limits of heredity, the body size of man is strongly influenced by the environment in which he lives, and the nutritive value of the diet plays an important role on growth. So, in nowadays, in the construction of growth standards, emphasis is placed on measuring children living under favorable conditions and in optimal nutritional state.Chin and co-workers published (1957) their data of measurement of nearly 3,000 carefully selected children, from birth to 7 years with known backgrounds as stated above. This seems, therefore, to be the most suitable material for constructing a growth standard for preschool children.The method of construction is as follows: Chin's growth curves of height and weight and the corresponding S.D. curves were smoothed out in order to obtain the "ideal" growth curves of the children measured. From such smooth curves, the corrected average value of heights and weights of each age group were read off. The distances between each two age groups were all 1 month from birth to 7 years.For the convenience of evaluating the growth level of an individual child, the following scheme is proposed: it consists of 6 levels, namely: Level A (high): (M + 2S) and aboveB (middle high); (M + 2S) - (M + 1S)C (upper middle); (M + 1S) -(M)D (lower middle); (M) -(M-1S)E (middlelow); (M - 1S)-(M-2S)F (low); (M-2S) and belowWhere M is the mean value of height or weight, and S is the corresponding S.D. value.By using these figures, a "Table of the growth levels of children from birth to age 7" is constructed. Such a table may be used for the evaluation of the growth levels of both individual child and the "collective growth level" of a group of institutional children, i.e. in nurseries or kindergartens. To complete the later procedure, the percentages of the number of children who fall in each level (irrespective of sex and age) are calculated on the basis of the total number of children measured in an institution. By summing up the percentage value of levels A, B, and C (the sum is used as an index) one may easily judge the "collective growth level" of the group of children in such an institution.

Objective To study the genetic basis for biovar conversion of Y. pestis. Methods In silico comparative genomic analysis was conducted and some critical genetic variations of Yersinia pestis were comparatively analyzed by means of PCR and DNA sequencing. Results A 93bp in-frame deletion in glpD gene results in the glycerol negative characteristic of Orientalis strains. A point mutation in the napA gene may cause the negative characteristic of nitrate reduction in Mediaevalis and Microus strains. A 122-bp frameshift deletion in the araC gene may lead to the arabinose negative phenotype of Microus strains. Conclusion In this study, Microtus strains with their unique pathogenic, biochemical and molecular features, were proposed as a novel biovar Microtus. In the light of its differential ability to ferment glycerol and arabinose and to reduce nitrate, Y. pestis can be classified into four biovars-Antiqua(glycerol positive, arabinose positive and nitrate positive), Mediaevalis(glycerol positive, arabinose positive and nitrate negative), Orientalis(glycerol negative, arabinose positive and nitrate positive), and Microtus(glycerol positive, arabinose negative and nitrate negative).