[Objective]To explore the biomechanical stability of fixation with two and three cannulated compression screws in treatment of the adductive femoral neck fractures by the three-dimensional finite element analysis(FEA).[Method]Two FEA models of two screws and three screws for adductive femoral neck facture fixations were set up to investigate the simulated loading of three different conditions.[Result]At the condition of the heel touching the ground and the middle position,there was no difference in the biomechanical stabilities of the two models.However,at the condition of the tiptoe departing from the groud,the model of three screws fixation was better in torsion resistance and stretching resistance.[Conclusion]The biomechanical stability of fixation with two screws is determined by the direction of loading.Three cannulated compression screws fixation provides better biomechanical stability.

Chinese medical records recorded the whole activities during a syndrome differentiation and treatment of disease. With the characteristics of diversity and lively, the records have important values in establishing TCM therapeutic thoughts and abilities for students. Amount of medical records have been recorded in medical books since the Western Han dynasty. In order to provide the references for teaching prescription aided by medical records, this article discusses the choice and application of medical records to teach prescription by listing examples on the basis of outlining the development of TCM medical records.

Dual source CT is a kind of 64 slices CT including two acquisition systems. It possesses such advantages as higher SNR of images,higher resolution of time,lower dose of radiation,bigger FOV of scanning,wider coverage of scanning and dual enrage subtraction imaging,etc. Weather these advantages could be brought into full play has great relationship with the preparations of dual source CT before its installation. The corresponding discussion is made in this text to see how to make preparations for dual source CT in different aspects such as room building,surrounding background,power supply,fire protection,radiation protection and periphery,etc.

Objective To observe the value of the corresponding solutions for MRI static magnetic field artifacts after analyzing their generating mechanism.Methods Different solutions was used to eliminate static magnetic field artifacts,such as improving inner and outer background,calibrating software and hardware,editing parameters,instructing patients,etc.in scanning patients or phantom with Siemens Impact 1.0T and GE Signa 1.5T MR by the use of SE or GRE sequences.Results Static magnetic field artifacts were controlled to different extent and the quality of the mass MR images were improved.Conclusion Most static magnetic field artifacts can be eliminated completely or reduced by using corresponding solutions,so more corrective information can be provided to clinic.

Bacterial translocation and endotoximia occurs in consequence of increased intestinal permeability after trauma. Glutamine can decrease intestinal permeability and improve the intestina mucosal barrier.

Adult ; Altitude Sickness ; metabolism ; pathology ; Apoptosis ; BH3 Interacting Domain Death Agonist Protein ; metabolism ; Erythroblasts ; cytology ; pathology ; Humans ; Male ; Middle Aged ; RNA, Messenger ; genetics ; bcl-2-Associated X Protein ; metabolism ; bcl-X Protein ; metabolism

Adolescent ; Adult ; Aged ; Cavernous Sinus ; injuries ; Female ; Humans ; Hypophysectomy ; adverse effects ; methods ; Intraoperative Complications ; Male ; Middle Aged ; Pituitary Neoplasms ; surgery ; Young Adult

Objectives:To study the effects of glutamine on the change of intestinal permeability and investigate its relationship with systemic inflammatory response in abdominal postoperative patients. Methods: A prospective, randomized, double blind and controlled trial was taken. 20 patients who underwent abdominal surgery were randomized into two groups: Gln group(orally administrated glutamine, 30 g/d, for 7 day, n =10) and placebo group(orally administrated placebo, 30 g/d, for 7 day, n =10). Temperatures and heart rates of all patients were daily recorded during administration. The white blood cell counts and biochemical variables were measured before operation and days 4 and 7 after administration. Serum concentrations of glutamine, endotoxin, diamine oxidase and malondialdehyde and urine lactulose/mannito(L/M) ratio were measured before and the 7th day after administration. Results:The patients in the two groups were comparable prior to the administration. Serum Gln concentration was significantly decreased in placebo group and increased in Gln group after 7 days of administration. Urine L/M ratio was significantly increased in placebo group and decreased in Gln group. The serum concentrations of endotoxin, diamine oxidase and malondialdehyde were significantly decreased in Gln group when compared with those in placebo group. Temperatures, heart rates and WBC counts were significantly lower in Gln group than in placebo group. Conclusions:The gut is one of the sources of the systemic inflammatory response in abdominal postoperative patients and the glutamine can decrease the intestinal permeability,maintain the intestinal barrier and attenuate the systemic inflammatory response in the early period of postoperative patients.

Animals ; Apoptosis ; Extremities ; blood supply ; Intestine, Small ; cytology ; pathology ; Ischemic Preconditioning ; Male ; Rats ; Rats, Wistar ; Reperfusion Injury ; pathology