A catalytic kinetic photometric method for the determination of nitrite with surfactant sensitizer has been developed. The method is based on the catalysis of NO2- to the discoloring reaction of pyronine B oxidized by potassium bromate in the solution of dilute H3PO4. When cetylpyridine bromide was used as a sensitizer of the reaction, the sensitivity increased by 2.5 times approximately. There was linear relationshop of lg(Ao/A) with nitrite in the range 0.005 ～ 0.15 mg/L. The detection limit was 0.004 mg/L. The method was used in the determination of trace nitrite in water and vegetable samples with satisfactory results.

With Minglou Community Children's Rehabilitation Base as a case,which was jointly founded by tertiary specialized hospital and community health service center,the paper introduced how to use SWOT model to systematically analyze the strengths and weaknesses of the internal environment,opportunities and threats of external condition.Based on the analysis,the solutions,suggestions and policy of children's rehabilitation were proposed,providing reference for decision making to promote the community children's rehabilitation.

Objective To review the concepts of three common scales assessing upper limbs function of children with cerebral palsy, namely Fine Motor Function Measure (FMFM), Melbourne Assessment 2 of Unilateral Upperlimb Function (MA2) and Quality of Upper Extremity Skills Test (QUEST), from the framework of Chinese version of International Classification of Functioning, Disability and Health-Child and Youth Version (ICF-CY). Methods Concepts of each item from FMFM, MA2 and QUEST were extracted independently by a rehabilitation doctor and a therapist with professional experience more than three years, and then linked with ICF-CY category accord-ing to the linking rules. The distribution of concepts of each scale linking to ICF-CY categories was investigated. Results A total of 62 con-cepts were extracted from these three scales, and 403 linkages to various ICF-CY categories. Concepts from FMFM were the most linked with ICF-CY category among them, in which nearly two-thirds (134/204) concepts linked with the categories of Activity And Participation. Concepts from QUEST principally linked with the category of joint and arm-supporting in Body Function. Concepts from MA2 linked to category of cognition function which reflected motor accuracy 7 times and motor fluency 9 times (more than 50%of the total amount of link-ages). Conclusion FMFM mainly evaluates the activity and participation associated with upper limb function in children with cerebral palsy, and may be more applicable for younger children. MA2 mainly evaluates the accuracy and fluency of upperlimb movement. QUEST mainly evaluates body function especially the joint and supporting function of upper limbs.

Objective To observe the clinical efficacy of JIN’s three needle therapy plus rehabilitation in treating mental retardation (MR).Method Seventy-two MR patients were randomized into a treatment group of 37 cases and a control group of 35 cases. The control group was intervened by conventional rehabilitation training, while the treatment group was treated with JIN’s three needle therapy in addition to the rehabilitation training. The modified Chinese version of Gesell Developmental Schedules (GDS) was adopted to observe the improvements in gross and fine motor skills, language, social function and adaptability, and the clinical efficacies were compared between the two groups. Result In the treatment group, the adaptability, gross motor skills and fine motor skills scores were significantly changed after the intervention (P<0.05). In the control group, the gross and fine motor skills scores were significantly changed after the intervention (P<0.05). After the treatment, there were significant differences in comparing the gross and fine motor skills scores between the two groups (P<0.05). In the treatment group, the total effective rates were respectively 93.1% and 62.5% in the mild-moderate and severe-extremely severe patients, versus 76.9% and 44.4% in the control group. There was a significant difference in comparing the total effective rate in the mild-moderate patients between the two groups (P<0.05).Conclusion JIN’s three needle therapy plus rehabilitation is an effective approach, and it can significantly improve the gross and fine motor skills and adaptability in mild-moderate MR patients.

Objective:To explore the short-term outcomes of a 3D printed trabecular block cage to assist posterior internal fixation for the treatment of patients with basilar invagination and atlantoaxial dislocation.Methods:Between June 2017 and February 2019, 12 patients with basilar invagination and atlantoaxial dislocation underwent atlantoaxial distraction and posterior internal fixation at Department of Orthopedics, The First Affiliated Hospital to Zhengzhou University. They were 5 males and 7 females, aged from 34 to 62 years (average, 45.6 years). 3D printed cages were inserted intraoperatively between the joints of the atlantoaxial lateral mass. The atlanto-dental interval interval (ADI), cervico-medullary angle (CMA) and distance from tip of the odontoid process to Chamberlain's line (DOCL) and the Japanese Orthopedic Association (JOA) scale were compared between preoperation and 12 months postoperation to observe the fusion of the joints of the atlantoaxial lateral mass.Results:Operation went on uneventfully in all the 12 patients. Operation time averaged 116.5 min (from 85 to 190 min), fluoroscopy frequency 9.4 times (from 6 to 21 times), and intraoperative bleeding 82.3 mL (from 50 to 210 mL). No such postoperative complications occurred as cerebrospinal leak, cerebral infarction, or breakage, displacement or loosening of implants. All patients were followed up for 18 to 42 months (mean, 26.3 months). Their preoperative JOA, ADI, CMA and DOCL [8.33±0.98, (8.66±1.64) mm, 119.63°±4.15° and (9.66±2.15) mm] were significantly improved to 14.17±1.03, (2.63±0.59) mm, 153.76°±7.88° and (2.07±0.69) mm ( P<0.05) at 12 months postoperation. Bony fusion was achieved in all the operative segments. Conclusion:In the treatment of patients with basilar invagination and atlantoaxial dislocation, a 3D-printed trabecular block cage can be used to assist posterior internal fixation to achieve satisfactory reduction and maintain the height of joint space, leading to satisfactory short-term outcomes.

[Objective] To summarize the experience of professor FAN Yongsheng who uses the herbal prescription"modified Simiao powder"to treat gouty arthritis, so as to direct our clinical practice better. [Method] By learning from professor FAN as well as collating his medical cases that applicating "modified Simiao powder" to the treatment of gouty arthritis, clearing and definiting how teacher FAN thinks etiologies and pathogenesis of gouty arthritis and analyzing the prescription of"Simiao powder"and giving two clinical cases, so that we can learn and discuss. [Result] Teacher FAN believes that gout pathogenesis for the body fluid metabolic abnormalities, and body fluid metabolism and liver and spleen and kidney three organs are closely related. Patients usually irritable or liver qi stagnation, or like to eat greasy meat, temper deficiency, or lack of kidney essence, gasification weakness, resulting in wet endogenous, wet evil staying in the joints, the emergence of local fever, phlegm, blood stasis, poisonous evil, into gouty arthritis. Acute onset of the pathogenesis of "hot and humid", the course of time for the "hot and humid phlegm stagnant each other", treatment should follow the law of "clear away heat-dampness", according to the cause, changes in the pathogenesis of flexible application of four wonderful addition and subtraction; And to Qufeng, detoxification, blood circulation, dredge meridian, so as to achieve dialectical treatment, with the card addition and subtraction. [Conclusion] Professor FAN Yongsheng uses"modified Simiao powder"to treat gouty arthritis and has achieved good clinical efficacy, worthy of clinical study and reference.

BACKGROUND:Fusion treatment for single segment cervical spondylosis can induce complications such as abnormal enlargement of range of motion in adjacent segments and degenerative manifestations. Recently, scholars began to explore and to use non-fusion technique to replace traditional fusion therapy. Cervical artificial disc replacement as a new anterior non-fusion program has been greatly used in the clinic, not only obtained good clinical therapeutic effects, but also made cervical vertebrae near physiological stability, delayed adjacent segment degeneration and reduced complications. ＜br> OBJECTIVE:To compare the clinical effects of the single level artificial disc replacement and the anterior cervical decompression and fusion for cervical spondylosis. ＜br> METHODS:A total of 59 patients with single segment cervical spondylosis, whose clinical signs and symptoms were accorded, were enrol ed from the First Affiliated Hospital of Zhengzhou University, China from May 2011 to May 2013. Imaging revealed that single segment of cervical disc degeneration compressed spinal cord or nerve root. Owing to different surgeries, these patients were divided into artificial disc replacement group (replacement group;n=32) and anterior cervical decompression and fusion group (fusion group;n=27). They were fol owed up at 5 days, 3, 6 and 12 months after treatment. Japanese Orthopaedic Association scores, neck pain, upper extremity pain visual analog scale scores were measured. The range of motion of the replacement segment and its effects on adjacent segments were observed. ＜br> RESULTS AND CONCLUSION:The postoperative Japanese Orthopaedic Association Scores were improved compared with preoperative scores (P＜0.05), while Japanese Orthopaedic Association Scores were decreased compared with preoperative scores (P＜0.05). There were no significant differences between two groups (P>0.05). Range of motion of the replacement segment after treatment was (11.6±3.0)° in the replacement group, showing no significant differences as compared with before surgery (8.8±2.7)° (P>0.05). No significant activity was found at 3 months after treatment in the fusion group. During fol ow-up, the range of motion in the adjacent segments was smal er in the replacement group than in the fusion group (P＜0.05). No significant difference in the range of motion in the adjacent segments was detected before and after treatment in the replacement group (P>0.05), but significant differences in the range of motion were detected before and after treatment in the fusion group (P＜0.05). The range of motion was apparently increased after treatment. These findings indicated that compared with the anterior cervical decompression and fusion, cervical artificial disc replacement can not only improve the clinical symptoms, restore nerve function, but also can keep the range of motion and stability of the cervical replacement segment. Moreover, it does not have impacts on the range of motion in the segments near to the surgical wound, and can effectively maintain cervical curvature.

Abstract In recent years, the overall incidence of scoliosis in children and adolescents in China is on the rise, and it has become the third largest "killer" affecting the health of children and adolescents in China after obesity and myopia. The dysfunction caused by spinal deformity has no obvious pathological manifestations or clinical symptoms in children and adolescents (except for severe scoliosis). It is easy to be ignored in the early stage, but if it is not intervened in time, this will cause serious damage to the long term prognosis and quality of life of the patients. Therefore, through early scoliosis screening, we can effectively monitor the spinal health status of children and adolescents in China, ensure timely diagnosis of the disease, timely intervention (brace and other conservative treatment), and play the role of early prevention. Avoid further deterioration of scoliosis and surgical intervention. This article will focus on the research progress of screening and conservative treatment of scoliosis.

Objective To explore the correlation between psychological health service demand and loneliness and anxiety depression in rural left-behind women.Methods 260 left-behind wo nen in Hebei province were surveyed by psychological health service demand scale,UCLA loneliness scale,trait anxiety scale and the center for epidemiologic studies depression scale (CES-D).Results There were statistically significant differences between the only child and non-only child left-behind women in mental health service demand ((131.72±13.91) vs (122.94±14.76)),loneliness ((52.94±5.65) vs (49.864±5.90)) and anxiety ((50.97±6.38) vs (47.16±4.80)) (t=3.313,2.899,4.151,P＜0.01).The mental health service demand,loneliness,anxiety and depression of left-behind women were different in the age of marriage (F=6.196,9.441,5.257,4.221,all P＜0.01),husband go out time (F=2.761,27.020,4.550,2.830,all P＜0.05) and degree of farm work (F=12.142,6.403,4.115,5.366,all P＜0.001).The anxiety of left-behind women was positively correlated with service content,service demand and depression (r=0.138-0.221,P＜0.01).Depression was negatively correlated with mental health service demand and service teams (r=-0.352--0.223,P＜ 0.01).Loneliness was positively correlated with service content,anxiety and depression (r=0.177-0.262,P＜ 0.01).Multiple linear regression showed that husbands go out time (β=0.326),farm work in very heavy degree (β=-0.376) and relatively heavy degree (β=-0.281),depression (β=-0.194) had a predictive effect on mental health services.Conclusion The mental health service demand of left-behind women are affected by their age,whether the only child,the age of marriage,their husbands' go out time and the degree of heavy farm work.

Objective:To investigate the risk factors of deep venous thrombosis in patients before hip arthroplasty, and to explore the possible causes of postoperative thrombosis.Methods:The clinical data of 361 patients with hip arthroplasty treated in the Department of Orthopaedic Trauma of Xi′an Honghui Hospital from September 2015 to December 2019 were studied retrospectively, including 102 males and 259 females, aged 65 to 94 years, and the average age was 72.25 years old. All fracture patients were given subcutaneous injection of low molecular weight heparin calcium to prevent lower extremity thrombosis. The deep veins of both lower extremities were examined before and after operation. The general data of the two groups of patients were collected and recorded, including age, sex, whether complicated with medical diseases (essential hypertension, type 2 diabetes, coronary heart disease), serological indexes, time from injury to admission, and time from admission to operation. The software of SPSS 19.0 was used for statistical analysis.Results:The incidence of lower limb DVT, before operation was 29.92%, including 26 males (24.07%) and 82 females (75.93%). The results of multivariate logistic regression analysis showed that diabetes mellitus ( OR=2.127, 95% CI: 1.134-3.989, P=0.019), coronary heart disease ( OR=1.692, 95% CI: 1.056-2.713, P=0.029) and the time from injury to admission ( OR=1.677, 95% CI: 1.037-2.712, P=0.035) were independent risk factors for DVT in elderly patients undergoing hip arthroplasty. The incidence of lower limb DVT, after operation was 46.54%. After operation, proximal thrombus were occurred in 2 cases (1.19%), distal thrombus in 143 cases (85.12%), and mixed thrombus in 23 cases (13.69%). Postoperative thrombus was ipsilateral to the fracture limb in 84 cases (50.00%), thrombus was located in the healthy side of the fracture in 19 cases (11.31%), and DVT occurred in 65 cases (38.69%) in both lower limbs. Conclusions:Delayed admission longed than 48 hours, coronary heart disease and diabetes mellitus are the risk factors for the formation of DVT. The thrombus that existed before operation and did not disappear after operation accounted for 48.81% of the total incidence of postoperative thrombosis, and the new thrombus accounted for 51.19% of the total incidence of postoperative thrombosis. For the elderly patients with femoral neck fracture undergoing hip arthroplasty, ultrasonic examination of both lower limbs should be performed before and after operation to find the changes of thrombus in time and do a good job of prevention and treatment.