Objective: To evaluate the efficacy and safety of the single-use hemoperfusion device (UA230) in treating refractory gout (RG) via plasma perfusion. Methods: Thirty-four RG patients aged 18-65 years were recruited and randomly divided into a control group (febuxostat therapy, n=17) and an experimental group (plasma perfusion combined with febuxostat therapy, n=17). Differences in serum uric acid (SUA) levels and urate-lowering rates between the two groups were analyzed using t-tests. Between-group differences in incidence of adverse reactions were analyzed using chi-square tests. Results: At 7 and 14 days post-treatment, SUA levels in the experimental group were significantly lower than those in the control group, with a higher urate-lowering rate (all P<0.05). However, no statistically significant differences in SUA levels or urate-lowering rate were observed at 28 days post-treatment (all P>0.05). The incidence of adverse reactions showed no significant difference between the two groups (χ =0.15, P>0.05). Conclusion: The single-use hemoperfusion device (UA230), combined with plasma perfusion technology, is a safe and effective treatment for RG. It may serve as a novel therapeutic approach for RG patients in clinical practice.

ObjectiveTo explore the clinical effectiveness and safety of stick-point sinew-soothing and bone-setting manipulation for scapulohumeral periarthritis. MethodsUsing prospective randomised controlled trial method， 60 cases of patients with scapulohumeral periarthritis were collected and randomly divided into 30 cases each in control group and trial group. Both groups of patients were orally treated with celecoxib， on the basis of which the control group was treated with traditional bonesetting manipulation once every other day for 14 days， while the trial group was treated with stick-point sinew-soothing and bone-setting manipulation once every 3~5 days for 14 days. Both groups were treated for 2 courses. The main observation indexes were pain visual analogue scale （VAS） score and shoulder pain and dysfunction index （SPADI）， which were evaluated once before treatment and after 2 and 4 weeks of treatment. The secondary effectiveness indicators included the university of California at Los Angeles shoulder rating scale （UCLA）， traditional Chinese medicine syndrome score （including symptom scores as joint pain， pain in a fixed place， activity limitation， local stiffness）， and serum interleukin （IL-6） and tumour necrosis factor α （TNF-α） levels before and after the treatment， in order to evaluate the clinical effectiveness， and to record the adverse reactions that occurred in the process of diagnosis and treatment. ResultsCompared with the groups before treatment， the pain VAS score， SPADI and scores of joint pain， pain with a fixed place， activity limitation and local stiffness were lower， UCLA score was higher， and serum IL-6 and TNF-α levels were lower at 4 weeks of treatment in the two groups （P＜0.05）. When comparing the two groups between the groups at 2 and 4 weeks of treatment， the pain VAS score， SPADI and TCM scores of each symptom in the study group were lower than those in the control group， the UCLA score was higher than those in the control group （P＜0.01）， and the serum IL-6 and TNF-α levels were lower than those in the control group at 4 weeks of treatment （P＜0.01）. The clinical effectiveness rate of the study group was 66.67%， which was significantly higher than that of the control group， which was 40.00% （P = 0.038）. No adverse reactions were seen in both groups during the study. ConclusionCompared with the traditional massage manipulation， the treatment of scapulohumeral periarthritis with stick-point sinew-soothing and bone-setting manipulation has more advantages in relieving pain symptoms， reducing inflammatory reaction， and promoting the recovery of shoulder joint function.

Objective:To explore the classification performance of combined model constructed from CT signs combined with radiomics for discriminating COVID-19 pneumonia and other viral pneumonia.Methods:The clinical and CT imaging data of 181 patients with viral pneumonia confirmed by reverse transcription-polymerase chain reaction in 15 hospitals of Yunnan Province from March 2015 to March 2020 were analyzed retrospectively. The 181 patients were divided into COVID-19 group (89 cases) and non-COVID-19 group (92 cases), which were further divided into training cohort (126 cases) and test cohort (55 cases) at a ratio of 7∶3 using random stratified sampling. The CT signs of pneumonia were determined and the radiomics features were extracted from the initial unenhanced chest CT images to build independent and combined models for predicting COVID-19 pneumonia. The diagnostic performance of the models were evaluated using receiver operating characteristic (ROC) analysis, continuous net reclassification index (NRI) calibration curve and decision curve analysis.Results:The combined models consisted of 3 significant CT signs and 14 selected radiomics features. For the radiomics model alone, the area under the ROC curve (AUC) were 0.904 (sensitivity was 85.5%, specificity was 84.4%, accuracy was 84.9%) in the training cohort and 0.866 (sensitivity was 77.8%, specificity was 78.6%, accuracy 78.2%) in the test cohort. After combining CT signs and radiomics features, AUC of the combined model for the training cohort was 0.956 (sensitivity was 91.9%, specificity was 85.9%, accuracy was 88.9%), while that for the test cohort was 0.943 (sensitivity was 88.9%, specificity was 85.7%, accuracy was 87.3%). The AUC values of the combined model and the radiomics model in the differentiation of COVID-19 group and the non-COVID-19 group were significantly different in the training cohort ( Z=-2.43, P=0.015), but difference had no statistical significance in the test cohort ( Z=-1.73, P=0.083), and further analysis using the NRI showed that the combined model in both the training cohort and the test cohort had a positive improvement ability compared with radiomics model alone (training cohort: continuous NRI 1.077, 95 %CI 0.783-1.370; test cohort: continuous NRI 1.421, 95 %CI 1.051-1.790). The calibration curve showed that the prediction probability of COVID-19 predicted by the combined model was in good agreement with the observed value in the training and test cohorts; the decision curve showed that a net benefit greater than 0.6 could be obtained when the threshold probability of the combined model was 0-0.75. Conclusion:The combination of CT signs and radiomics might be a potential method for distinguishing COVID-19 and other viral pneumonia with good performance.

Objective:To evaluate the effect of preoperative 3D simulation on the evaluation of rhinoplasty.Methods:From December 2017 to March 2019, patients in the Department of Burn and Plastic Surgery of the Second Xiangya Hospital of Central South University were randomly selected as the research subjects. According to whether they had received 3D simulation before surgery, they were divided into the experimental group (after 3D simulation before comprehensive surgery) and the control group (without 3D simulation before comprehensive surgery). Visual analogue scale (VAS) and Rhinoplasty Outcomes Evaluation (ROE ) questionnaires were used to evaluate the satisfaction of all patients preoperative and one month after surgery.Results:At the beginning of this study, a total of 97 cases were included, 97 cases were given questionnaires, and 60 cases were effectively recovered, 30 cases in each group.There was statistical significance in the improvement of the postoperative VAS scores between the experimental group and the control group ( P<0. 05). The mean improvement in the experimental group was (4. 10±0. 88) points, while the mean improvement in the control group was (2. 53±0. 73) points. There was statistical significance in the improvement of the postoperativeROE satisfaction scores between the two groups. The average preoperative satisfaction score of the experimental group was (29. 5±9. 7) points, which increased to (77. 3±13. 7) points after surgery. In the control group, the average satisfaction score was (30. 4±11. 3) points before surgery and increased to (62. 7±23. 4) points after surgery. Conclusions:3D simulation before nasal synthesis can improve the postoperative satisfaction of patients.VAS and ROE questionnaires are good tools for evaluating the effect of comprehensive rhinoplastic surgery.

Objective:To evaluate the effect of preoperative 3D simulation on the evaluation of rhinoplasty.Methods:From December 2017 to March 2019, patients in the Department of Burn and Plastic Surgery of the Second Xiangya Hospital of Central South University were randomly selected as the research subjects. According to whether they had received 3D simulation before surgery, they were divided into the experimental group (after 3D simulation before comprehensive surgery) and the control group (without 3D simulation before comprehensive surgery). Visual analogue scale (VAS) and Rhinoplasty Outcomes Evaluation (ROE) questionnaires were used to evaluate the satisfaction of all patients preoperatively and one month after surgery.Results:At the beginning of this study, a total of 97 cases were included. 97 cases were given questionnaires, and 60 cases were effectively recovered.There were 30 cases in each group. There was statistical significance in the improvement of the postoperative VAS scores between the experimental group and the control group ( P<0.05). The mean improvement in the experimental group was (4.10±0.88) points, while the mean improvement in the control group was (2.53±0.73) points. There was statistical significance in the improvement of the postoperative ROE satisfaction scores between the two groups. The average preoperative satisfaction score of the experimental group was (29.5±9.7) points, which increased to (77.3±13.7) points after surgery.In the control group, the average satisfaction score was (30.4±11.3) points before surgery and increased to (62.7±23.4) points after surgery. Conclusions:3D simulation before nasal synthesis can improve the postoperative satisfaction of patients. VAS and ROE questionnaires are good tools for evaluating the effect of comprehensive rhinoplastic surgery.

Objective:To evaluate the effect of preoperative 3D simulation on the evaluation of rhinoplasty.Methods:From December 2017 to March 2019, patients in the Department of Burn and Plastic Surgery of the Second Xiangya Hospital of Central South University were randomly selected as the research subjects. According to whether they had received 3D simulation before surgery, they were divided into the experimental group (after 3D simulation before comprehensive surgery) and the control group (without 3D simulation before comprehensive surgery). Visual analogue scale (VAS) and Rhinoplasty Outcomes Evaluation (ROE ) questionnaires were used to evaluate the satisfaction of all patients preoperative and one month after surgery.Results:At the beginning of this study, a total of 97 cases were included, 97 cases were given questionnaires, and 60 cases were effectively recovered, 30 cases in each group.There was statistical significance in the improvement of the postoperative VAS scores between the experimental group and the control group ( P<0. 05). The mean improvement in the experimental group was (4. 10±0. 88) points, while the mean improvement in the control group was (2. 53±0. 73) points. There was statistical significance in the improvement of the postoperativeROE satisfaction scores between the two groups. The average preoperative satisfaction score of the experimental group was (29. 5±9. 7) points, which increased to (77. 3±13. 7) points after surgery. In the control group, the average satisfaction score was (30. 4±11. 3) points before surgery and increased to (62. 7±23. 4) points after surgery. Conclusions:3D simulation before nasal synthesis can improve the postoperative satisfaction of patients.VAS and ROE questionnaires are good tools for evaluating the effect of comprehensive rhinoplastic surgery.

Objective:To evaluate the effect of preoperative 3D simulation on the evaluation of rhinoplasty.Methods:From December 2017 to March 2019, patients in the Department of Burn and Plastic Surgery of the Second Xiangya Hospital of Central South University were randomly selected as the research subjects. According to whether they had received 3D simulation before surgery, they were divided into the experimental group (after 3D simulation before comprehensive surgery) and the control group (without 3D simulation before comprehensive surgery). Visual analogue scale (VAS) and Rhinoplasty Outcomes Evaluation (ROE) questionnaires were used to evaluate the satisfaction of all patients preoperatively and one month after surgery.Results:At the beginning of this study, a total of 97 cases were included. 97 cases were given questionnaires, and 60 cases were effectively recovered.There were 30 cases in each group. There was statistical significance in the improvement of the postoperative VAS scores between the experimental group and the control group ( P<0.05). The mean improvement in the experimental group was (4.10±0.88) points, while the mean improvement in the control group was (2.53±0.73) points. There was statistical significance in the improvement of the postoperative ROE satisfaction scores between the two groups. The average preoperative satisfaction score of the experimental group was (29.5±9.7) points, which increased to (77.3±13.7) points after surgery.In the control group, the average satisfaction score was (30.4±11.3) points before surgery and increased to (62.7±23.4) points after surgery. Conclusions:3D simulation before nasal synthesis can improve the postoperative satisfaction of patients. VAS and ROE questionnaires are good tools for evaluating the effect of comprehensive rhinoplastic surgery.

Objective: To investigate the clinical effect of diced cartilage in correcting nasal alar base depression after cleft lip surgery. Methods: A retrospective study was conducted in 15 patients of nasal deformity after lip surgery from January 2018 to January 2019. All the patients were taken from autologous costal cartilage to reconstruct the outline of nasal malformation, and the remaining autologous costal cartilage was cut into 0.5-1.0 mm pieces and filled into the basilar lacunar space of the nasal alar by the 1 ml syringe whose anterior needle nipples was removed. The effects of visual images before and after operation were compared and analyzed by Adobe Photoshop CS6 software. The patients were followed up for 6-15 months (mean 10months). The satisfaction and complications of the patients were investigated. Results: The nasal alar base was significantly elevated and the outline of the nasal deformity was improved in 15 patients after operation. The overall effect was satisfactory and no obvious complications were found. No obvious absorption was found in the follow-up. Conclusions The application of diced cartilage to correct the nasal alar base depression after cleft lip surgery was a feasible method with important clinical value. It advanced in taking good use of the remaining cartilage and reducing the damage to both the donor and recipient area.

Objective To study the change patterns of bone microstructural parameters around the magnesium based- implants after implantation in rabbit femur at different implantation time points. Methods The threaded and non-threaded high-purity magnesium (HP Mg, 99.99 wt.%) screws, with a 2 mm diameter and a 7 mm length, were implanted into the femoral condyle of the rabbits. The control group was the drilled and healthy group. Micro-CT scanning and analysis were performed at 8th, 12th and 16th week after operation. The obtained microstructural parameters included bone mineral density (BMD), bone volume fraction (BV/TV), trabecular thickness (Tb.Th), trabecular number (Tb.N), trabecular separation (Tb.Sp). Results At 8th week, BMD and BV/TV in non-threaded magnesium screw group were significantly higher than those in healthy group, Tb.N was significantly higher than that in drilled and healthy group, and Tb.Sp was significantly lower than that in healthy group. At 12th week, BMD, BV/TV and Tb.N in threaded magnesium screw group were significantly higher than those in drilled and healthy group, Tb.Th was significantly higher than that in healthy group, and Tb.Sp was significantly lower than that in drilled and healthy group. At 16th week, BMD, BV/TV and Tb.N in non-threaded magnesium screw group were significantly higher than those in drilled and healthy group, and Tb.Sp was significantly lower than that in drilled and healthy group. Conclusions The magnesium based-implant promoted higher BMD, BV/TV, Tb.Th, Tb.N and lower Tb.Sp of surrounding implant, indicating that osseointegration and bone growth were in good condition. Magnesium based-implant could effectively promote the regeneration of bone. The results provide a theoretical basis for the orthopedic application of magnesium based-implants in clinic.

Objective To compare the in vivo degradation rates of two different kinds of high purity magnesium bone screws by animal experiments, so as to make some suggestions on structural design of high purity magnesium bone screws. Methods High purity magnesium bone screws with threads and without threads were implanted into femoral condyles of New Zealand rabbits separately. Twenty-four rabbits were randomly divided into 3 groups. They were euthanized at 8, 12 and 16 weeks after operation, respectively. The in vivo degradation rates of bone screws with two different shapes were compared through micro-CT scanning and Skyscan CT-analyser software, and the stress changes during the progress of bone screw degradation were analyzed. Results The initial surface area of threaded screws ［(31.70±0.06) mm2］ was significantly greater than that of the non-threaded ones ［(29.56±0.22) mm2］. After 8, 12 and 16 weeks, the volume loss ratios of the threaded screws were (26.01±3.44)%, (33.35±5.05)%, (36.84±6.99)%, respectively, and the volume loss ratios of the non-threaded screws were (22.53±4.78)%, (31.12±6.59)%, (43.22±9.31)%, respectively. At the same time point, there were no significant differences in the volume loss ratio between two kinds of screws. The relationship between the volume reduction and the implantation time was linear for non-threaded screws and gradually decreasing for threaded screws. Conclusions Under the low-bearing condition, different structural design for high purity magnesium screws has no obvious effect on their degradation rate in vivo.