Objective To explore the affecting factors of nursing interns' personal knowledge management (KM) ability and analyze the correlation between their KM ability and clinical practice ability.Methods A total of 345 nursing interns' KM ability and clinical practice ability were investigated by using two scales.Results Affecting factors of nursing interns' KM ability included being a cadre and being interested in nursing specialty or not.Factors affecting nursing interns' clinical practice ability were practice period,academic records,being a cadre,intention to have a nursing job,interest to be a nurse.It also showed significant positive correlation between their KM ability and clinical practice ability (r=0.761); KM ability could explain 59％ of variability of clinical practice ability(R2=0.599).Among the dimensions of KM ability,the highest positive correlation was knowledge management cognition (r=0.741).Conclusions To enhance nursing interns' clinical practice ability,we need cultivate nursing interns' interest to nursing specialty,ability to be a cadre and improve their knowledge management cognition ability.

Objective We aimed to explor the correlation between the serum resistin levels and the collapse process of femoral head necrosis. Methods Eighty-eight patients with osteonecrosis of the femoral head were included in this study (26, 34 and 28 cases at ARCO stage Ⅱ, Ⅲ and Ⅳ, respectively). Fifty healthy controls were enrolled. The serum resistin levels were detected with ELISA method. We compared the serum resistin levels between the patient group and control group. The differences of serum resistin levels between different ARCO stagesand various disease causes were analyzed in the patient group. Results The resistin levels were significantly higher in patients with osteonecrosis of the femoral than healthy control group (P = 0.026). Compared with control group, the resistin levels significantly increased in patients at ARCO stage Ⅲ and ARCO stage Ⅳ respectively (P = 0.001).The resistin levels of procollapse group (ARCO stage Ⅲ and Ⅳ) were significantly higher than that of precollapse group (ARCO stage Ⅱ) (P = 0.000). There was no statistic difference between ARCO stage Ⅲ andⅣ in resistin levels (P> 0.05). No statistical significance was found between different disease causes. ROC curve analysis of resisrin level indicated theertain accuracy (AUC = 0.749) , sensitivity and significant specificity (77.4％, 61.5％, respectively) in the diagnosis of femoral head necrosis. Conclusions Resistin is closely related to the collapse process of femoral head necrosis. The level of resistin was significantly increased after the collapse of femoral head, which could be useful for the clinical diagnosis of the collapse of femoral head necrosis.

Objective To investigate the global research status and trends ofrehabilitation after arthroplasty.Methods The Wed of Science database was used to search the publications on rehabilitation after arthroplasty from 1994 to 2018.The included publish items were statistically analyzed by bibliometrics.VOSviewer software was used to analyze the visual transformation of literature coupling (including author coupling,mechanism coupling and country coupling) and co-occurrence analysis.The research status and trends of rehabilitation after arthrop]asty in recent years were analyzed and predicted.Results A total of 1 702 studies were included in the present study.The number of literatures increased year by year globally,including 612 in the United States as the top number of studies in the world.The total citation frequency (15 433 times) and H index (61) of the research publications were also the highest in the world.China (79 literatures) ranked 6th in the number of global research publications,with total citation frequency (451 times) and H index (12) ranked 14th.The number of publications published by JOURNAL OF ARTHROPLASTY and ARCHIVES OF PHYSICAL MEDICINE AND REHABILITATION on rehabilitation after arthroplasty was the highest.The University of Pittsburgh and the University of Toronto were the biggest contributors to publications on rehabilitation after arthroplasty.The theme of rehabilitation after arthroplasty can be divided into five categories:pain management,functional exercise,hospital management,complications and clinical trials.Hospital management wasthe main research field recently and the orthopedic specialty hospital would become a hot research topic in the fulure.Conclusion According to the current global trends,rehabilitation study is deepening and the number of publications will increase continuously.The United States is the largest contributor in this area.The current researches focus on the "hospital management" after arthroplasty.The new type of orthopedic specialty hospital may be the next research hotspot for arthroplasty.

Objective To introduce a new method for preparation of bioactive β-tricalcium phosphate (β-TCP) by rapid stem cell screen-and-enrich-and-combine circulating system (SECCS) and evaluate its efficacy in the treatment of fresh fractures and bone defects.Methods Twenty-two patients with fresh fracture and bone defects were treated with SECCS from July 2013 to April 2016.They were 16 males and 6 females with an average age of 52.2 years (from 27 to 81 years).There were 15 tibial plateau fractures and 7 calcaneal fractures.The average size of bone defects was 12.5 mL.Bioactive β-TCP was prepared by SECCS intraoperatively and implanted back immediately into the bone defects.Radiographic examination,Lysholm knee scoring and Maryland foot scoring were used for assessment of curative efficacy.Results The 22 patients were followed up for an average of 25.7 months (from 12 to 46 months).By SECCS,the enrichment efficiency of bone marrow stromal cells (BMSCs) reached up to 82.4％ and the cell viability was not affected.The tibial plateau fractures were re-transplanted with 13,381.3 BMSCs on average and healed after an average of 8.9 weeks (from 6 to 15 weeks).The Lysholm knee scores at one year postoperatively averaged 93.6 points (from 84 to 100 points),yielding 10 excellent cases,4 good cases and one fair case.The calcaneal fractures were implanted back with 16,677.7 BMSCs on average and healed after an average of 9.4 weeks (from 8 to 13 weeks).The average Maryland foot score at one year after operation was 93.6 points (from 85 to 98 points),yielding 6 excellent cases and one good case.Conclusion Bioactive materials prepared by SECCS are good bone grafts for fresh fractures and bone defects.

Objective:To assess the feasibility of delayed-enhancement MRI in contouring the lumpectomy cavity (LC) for patients with invisible seroma or a low cavity visualization score (CVS≤2) in the excision cavity after breast-conserving surgery (BCS).Methods:Twenty-six patients with stage T 1-2N 0M 0 who underwent prone radiotherapy after BCS were recruited. The LC delineated on CT simulation images was denoted as LC CT. The LCs delineated on T 2WI, as well as on different delayed phases (2-, 5-and 10-minute) of delayed-enhancement T 1WI were defined as LC T2, LC 2T1, LC 5T1 and LC 10T1, respectively. Subsequently, the volumes and locations of the LCs were compared between CT simulation images and different sequences of MR simulation images using deformable image registration. Results:The volumes of LC T2, LC 2T1, LC 5T1 and LC 10T1 were all larger than that of LC CT. A statistical significance was found between the volume of LC CT and those of LC 2T1 or LC 5T1, respectively (both P<0.05). The conformal index (CI), degree of inclusion (DI), dice similarity coefficient (DSC) and the distance between the center of mass of the targets (COM) of LC CT-LC 10T1 were better than those of LC CT-LC T2, LC CT-LC 2T1 and LC CT-LC 5T1, however, there was no statistical difference among them (all P>0.05). Conclusions:It is feasible to delineate the LC based on prone delayed-enhancement MR simulation images in patients with low CVS after BCS. Meanwhile, the LCs derived from prone delayed-enhancement T 1WI of 10-minute are the most similar with those derived from prone CT simulation scans using titanium clips, regardless of the volumes and locations of LCs.