Objective To study the optimum flavonoids extraction process of Elaeagnusangustifolia L. with ethanol. Methods The best condition of extraction process of flavonoids was investigated by orthogonal design. Results The ratio of extraction on this condition was 2.295 mg/g. Conclusion The optimum technological conditions attained by theorthogonal experiment was as follows:concentration of ethanol 70%, extraction temperature 45 ℃, extraction time 30 min and the ratio of Elaeagnusangustifolia L. to extractant 1∶16.

Objective To investigate the establishment of secure tunnel in fixation for the talar neck fracture when screws were fixed from the medial wall of talus.Methods The age of volunteers was limited from 20 to 60 years old,and the height of male volunteers was from 165 to 185 centimeters,while the female volunteers' height was from 155 to 175 centimeters.The body mass index (BMI) was less than 25.The volunteers who were not heavy manual workers or standing working for long time had no history of ankle or foot fractures,and there were no evidence of degeneration changes in ankle joints according to X-ray.At last there were 33 males in this study with an average age of 43.7 (21-59) years and an average height of 176.0 (168-184) centimeters.There were 22 females with an average age of 43.2 (22-60) years and an average height of 165.4 (158-172) centimeters.After the volunteers' ankle joints and feet were scanned by CT,the reconstructed images were stored in CD and the slice thickness was 0.75 millimeters.The SuperImageTM Orthopedics Edition1.1 software was used to display the images and perform three dimensional reconstruction.The height of talar neck and the height of tarsal canal were measured.The models that screws passing into tarsal canals were built.The maximal length and angle that screws were inserted in the middle 1/3 and in the inferior 1/3 of medial wall of talus and run along to two directions were measured.At last,the data were analyzed with SPSS 13.0 software.Results The height of talar neck and tarsal canal had no significant difference between left side and right side in the same gender.The height of male talar neck was greater than the female' s.The models of screws passing into tarsal canals was gained.The length and angle in different insert points and different directions of screw fixation were also gained.When the screws were inserted from the middle 1/ 3 of the medial wall of talus,the angle of screw fixation was much wider than that when the screws were inserted from the inferior 1/ 3 of the medial wall of talus.At last,the safe range of the length and angel of screw fixation was calculated.Conclusion Damage of the blood of talus during internal fixation should be avoided.The middle 1/3 of the medial wall of talus is the most favourable choice to the fixation.Combining the digital technology with internal fixation for talar neck fracture could promote the operation' s security and feasibility.

Objective To observe the effect of panaxadiol saponins (PDS) on intellectual decline and cerebral lesion induced by destabilization of cervical vertebra in mice.Methods44 mice were randomly divided into the normal control group, model group, high PDS doses group and low PDS doses group with 11 animals in each group. The model of destabilization of cervical vertebra was established by operating and intraperitoneal injection of PDS performed in the PDS high doses group (14 mg/kg) and low doses group (7 mg/kg) once everyday for 50 days. The memory ability of mice was evaluated by the water-maze test and tittup platform experiment. 50 days later, all mice were executed and the activities of superoxide dismutase (SOD), lactic dehydrogenase (LDH) and the content of maleic dialdehyde (MDA), nitric oxide (NO) in encephalon were tested.ResultsIn the PDS groups, the incubation period and error times in water-maze test shortened significantly ( P<0.05), aod the reaction period in tittup platform experiment shortened and wrong times decreased obviously ( P<0.01) compared with the model group. The activities of SOD, LDH increased ( P<0.01), and the content of MDA and NO decreased ( P<0.01, P<0.05) in the PDS group compared with the model group.ConclusionPDS has certain protective and improving effect on the decline of memory ability and cerebral lesion induced by destabilization of cervical vertebra in mice.

[ ABSTRACT] AIM:To investigate the antipyretic effect of patchouli oil on lipopolysaccharide ( LPS)-induced fe-ver in rabbits.METHODS:Male rabbits (n=42) were randomly divided into 7 groups according to their body weight and basal body temperature, including control group, model group, western medical positive group, traditional Chinese medical positive group, and high, middle and low doses (2%, 1%and 0.5%) of patchouli oil groups.Subsequently, except the controls, the rabbits were injected with LPS at a dose of 1 mL/kg (2 mg/L) through marginal ear vein to establish rabbit fever model and the rabbits in control group received the same volume of NS.The rabbits in control group and model group were injected with 0.5%Tween-80 0.5 h late, and the rabbits in the other groups were treated with correspoonding drugs. The effect of patchouli oil on the body temperature was observed, and the levels of interleukin-1β( IL-1β) and tumor nec-rosis factor-α(TNF-α) in the serum, and prostaglandin E2(PGE2) and cyclic adenosine monophosphate (cAMP) in the hypothalamus were measured by radioimmunoassay.RESULTS: The body temperature and the levels of IL-1β, TNF-α, cAMP and PGE2 in model group were significant higher than those in control group.Patchouli oil notably inhibited the body temperature in the febrile rabbits.From 1.5 h to 5.5 h after administration, the body temperatures were increased by (1.06 ±1.55), (1.62 ±1.36), (1.38 ±1.22), (0.98 ±0.98) and (0.48 ±0.95) ℃in high patchouli oil group, re-spectively.From 3.5 to 5.5 h after administration, the body temperatures were elevated by ( 1.47 ±0.73 ) , ( 1.15 ± 0.68) and (0.63 ±0.54) ℃ in middle patchouli oil group, respectively.A tendency of downregulation of the elevated body temperatures was observed at every time point after administration in low patchouli oil group.Patchouli oil significantly decreased the levels of TNF-αin the serum and cAMP content in the hypothalamus, and attenuated the elevated tendency of the IL-1βlevel in the serum and PGE2 level in the hypothalamus.CONCLUSION:Patchouli oil evidently has antipyretic effect on LPS-induced fever in the rabbits.The antipyretic mechanism might be related to the inhibition of TNF-αlevel in serum and cAMP content in the hypothalamus.

Objective:To explore the teaching effect of magnetic on-demand teaching mode in nursing interns of neurology department.Methods:Forty-two nursing students who practiced in Neurology Department of Haikou People's Hospital from July 2019 to December 2019 were selected as the control group, and 44 nursing students who practiced from January 2020 to June 2020 were selected as the study group. The traditional teaching mode was adopted in the control group, while the magnetic on-demand teaching mode was adopted in the study group. The scores of theory and skill examination after teaching, nurses' core competence (evaluated by nurse core competence scale) before and after teaching, active learning rate and incidence of nursing errors during teaching and satisfaction with teaching were compared between the two groups. SPSS 25.0 was used for t test and chi-square test. Results:After teaching, the scores of theory and skills in the study group were significantly higher than those in the control group ( P<0.05). After teaching, the scores of core competence of nurses in the two groups were higher than before, and the scores of core competence of nurses in the study group were higher ( P<0.05). During the teaching period, the active learning rate of the study group was higher than that of the control group ( P<0.05), and the incidence rate of nursing errors was lower than that of the control group ( P<0.05). The satisfaction of all kinds of teaching in the study group was higher than that in the control group, with statistically significant differences. Conclusion:In the clinical teaching of nursing interns in neurology department, the magnetic on-demand teaching mode can significantly enhance the mastery of nursing theory and skills, improve the core competence of nurses, improve the active learning rate and teaching satisfaction, and reduce the occurrence of nursing errors.

With aim to reasonably cope with the elderly patients with hip fracture during epidemic of corona virus disease 2019 (COVID-19), Professor Su Jiacan and Academician Zhang Yingze organized the "expert consensus on elderly patients with hip fractures under epidemic of novel coronavirus pneumonia" that for the first time formulated the management strategies for the elderly patients with hip fracture including selection of surgical methods and protective measures for medical staff from perspective of orthopedic surgeons. The authors interpret the clinical guiding value and key points of diagnosis and treatment of the consensus to help clinicians better understand the consensus and strengthen its practical application.

TSCI have dyskinesia and sensory disturbance that can cause various life-threaten complications. The patients with traumatic spinal cord injury (TSCI), seriously affecting the quality of life of patients. Based on the epidemiology of TSCI and domestic and foreign literatures as well as expert investigations, this expert consensus reviews the definition, injury classification, rehabilitation assessment, rehabilitation strategies and rehabilitation measures of TSCI so as to provide early standardized rehabilitation treatment methods for TSCI.

Lower extremity deep vein thrombosis (DVT) is one of the main complications in patients with traumatic fractures, and for severe patients, the DVT can even affect arterial blood supply, resulting in insufficient limb blood supply. If the thrombus breaks off, pulmonary embolism may occur, with a high mortality. The treatment and rehabilitation strategies of thrombosis in patients with lower extremity fractures have its particularity. DVT in traumatic fractures patients has attracted extensive attention and been largely studied, and the measures for prevention and treatment of DVT are constantly developing. In recent years, a series of thrombosis prevention and treatment guidelines have been updated at home and abroad, but there are still many doubts about the prevention and treatment of DVT in patients with different traumatic fractures. Accordingly, on the basis of summarizing the latest evidence-based medical evidence at home and abroad and the clinical experience of the majority of experts, the authors summarize the clinical treatment and prevention protocols for DVT in patients with traumatic fractures, and make this consensus on the examination and assessment, treatment, prevention and preventive measures for DVT in patients with different fractures so as to provide a practicable approach suitable for China ′s national conditions and improve the prognosis and the life quality of patients.

Since December 2019, novel coronavirus pneumonia (NCP) has been reported in Wuhan, Hubei Province, and spreads rapidly to all through Hubei Province and even to the whole country. The virus is 2019 novel coronavirus (2019-nCoV), never been seen previously in human, but all the population is generally susceptible. The virus spreads through many ways and is highly infectious, which brings great difficulties to the prevention and control of NCP. Based on the needs of orthopedic trauma patients for emergency surgery and review of the latest NCP diagnosis and treatment strategy and the latest principles and principles of evidence-based medicine in traumatic orthopedics, the authors put forward this expert consensus to systematically standardize the clinical pathway and protective measures of emergency surgery for orthopedic trauma patients during prevention and control of NCP and provide reference for the emergency surgical treatment of orthopedic trauma patients in hospitals at all levels.