Objective:To explore the clinical effects of free anterolateral thigh perforator flap (ALTPF) with modified cross-leg vessel bridging in reconstruction of infected wounds in the lower leg combined with major vessel defects.Methods:A retrospective observational study was conducted on 7 patients who admitted to the Department of Trauma Orthopaedics, the 521 Hospital of Norinco Group from January 2020 to December 2021 for treatment of large infected wounds in lower leg with soft tissue defect by reconstructive surgery of flap transfer. The patients were 5 males and 2 females, aged 23-50 years old with an average age of 37 years old. The causes of injury were: 5 patients were of car accidents, 1 of machinery compression and 1 of heavy object crush. The wounds were reconstructed after debridement and infection control with sensitive antibiotics, where the soft tissue defects were found at 11.0 cm×15.0 cm to 20.0 cm×32.0 cm in size. All patients underwent vascular angiography or CDU examinations and it was confirmed that the affected calf had only an anterior tibial artery as the vessel left for blood supply in 6 patients and a posterior tibial artery as the blood supply vessel in one patient. Therefore application of vascular end-to-side anastomosis in free flap reconstruction of limb defects was impossible due to the damaged artery could not be salvaged as a blood supply artery for the transferred flap. Therefore, a modified cross-leg vessel bridging to the freed ALTPF in the affected lower leg was applied. The donor site of the pedicle was covered with VSD while the pedicle of the flap was anastomosed. It was remained until the posterior tibial artery and the tubular flap were ready for replantation after disconnection of the pedicle. The sizes of flap were 13.0 cm×17.0 cm to 22.0 cm×32.0 cm (unilateral ALTPFs for 6 patients and bilateral ALTPFs for 1 patient). Two donor sites in low tension were direct closed, and the rest of 5 donor sites that had great tensions and could not be directly sutured were reconstructed by skin grafting. The survival and complications of flaps were observed in the scheduled postoperative follow-ups at outpatient visits, WeChat reviews and home visits, etc.Results:All 7 patients were successfully treated and had 12-24 months postoperative follow-up, with an average of 16 months. All flaps survived, with primary healing in 6 patients and 1 patient had partial flap necrosis with surface infection, which healed after dressing changes. The wound healing time was 14-36 days with an average of 17.9 days. The time for disconnection of the cross-leg vessel bridging pedicle was 3-4 weeks with the flap transfer, with an average of 3.6 weeks. The donor sites of ALTPFs and vessel pedicles all healed well. CDU confirmed the patency of the contralateral posterior tibial artery. Satisfactory functional recovery was achieved in the affected lower limb and there was a good function of the contralateral healthy lower leg.Conclusion:Application of the transfer of a free ALTPF with modified cross-leg vessel bridging in reconstruction of infected wounds with major vessel defects in the lower leg has shown excellent clinical outcomes. It is a practical and effective method in treatment of large infective defect in lower leg.

The condition of patients with severe traumatic brain injury (sTBI) complicated by corona virus 2019 disease (COVID-19) is complex. sTBI can significantly increase the probability of COVID-19 developing into severe or critical stage, while COVID-19 can also increase the surgical risk of sTBI and the severity of postoperative lung lesions. There are many contradictions in the treatment process, which brings difficulties to the clinical treatment of such patients. Up to now, there are few clinical studies and therapeutic norms relevant to sTBI complicated by COVID-19. In order to standardize the clinical treatment of such patients, Critical Care Medicine Branch of China International Exchange and Promotive Association for Medical and Healthcare and Editorial Board of Chinese Journal of Trauma organized relevant experts to formulate the Chinese expert consensus on clinical treatment of adult patients with severe traumatic brain injury complicated by corona virus infection 2019 ( version 2023) based on the joint prevention and control mechanism scheme of the State Council and domestic and foreign literatures on sTBI and COVID-19 in the past 3 years of the international epidemic. Fifteen recommendations focused on emergency treatment, emergency surgery and comprehensive management were put forward to provide a guidance for the diagnosis and treatment of sTBI complicated by COVID-19.

Ankylosing spondylitis (AS) combined with spinal fractures with thoracic and lumbar fracture as the most common type shows characteristics of unstable fracture, high incidence of nerve injury, high mortality and high disability rate. The diagnosis may be missed because it is mostly caused by low-energy injury, when spinal rigidity and osteoporosis have a great impact on the accuracy of imaging examination. At the same time, the treatment choices are controversial, with no relevant specifications. Non-operative treatments can easily lead to bone nonunion, pseudoarthrosis and delayed nerve injury, while surgeries may be failed due to internal fixation failure. At present, there are no evidence-based guidelines for the diagnosis and treatment of AS combined with thoracic and lumbar fracture. In this context, the Spinal Trauma Academic Group of Orthopedics Branch of Chinese Medical Doctor Association organized experts to formulate the Clinical guideline for the diagnosis and treatment of adult ankylosing spondylitis combined with thoracolumbar fracture ( version 2023) by following the principles of evidence-based medicine and systematically review related literatures. Ten recommendations on the diagnosis, imaging evaluation, classification and treatment of AS combined with thoracic and lumbar fracture were put forward, aiming to standardize the clinical diagnosis and treatment of such disorder.

The acute combination fractures of the atlas and axis in adults have a higher rate of neurological injury and early death compared with atlas or axial fractures alone. Currently, the diagnosis and treatment choices of acute combination fractures of the atlas and axis in adults are controversial because of the lack of standards for implementation. Non-operative treatments have a high incidence of bone nonunion and complications, while surgeries may easily lead to the injury of the vertebral artery, spinal cord and nerve root. At present, there are no evidence-based Chinese guidelines for the diagnosis and treatment of acute combination fractures of the atlas and axis in adults. To provide orthopedic surgeons with the most up-to-date and effective information in treating acute combination fractures of the atlas and axis in adults, the Spinal Trauma Group of Orthopedic Branch of Chinese Medical Doctor Association organized experts in the field of spinal trauma to develop the Evidence-based guideline for clinical diagnosis and treatment of acute combination fractures of the atlas and axis in adults ( version 2023) by referring to the "Management of acute combination fractures of the atlas and axis in adults" published by American Association of Neurological Surgeons (AANS)/Congress of Neurological Surgeons (CNS) in 2013 and the relevant Chinese and English literatures. Ten recommendations were made concerning the radiological diagnosis, stability judgment, treatment rules, treatment options and complications based on medical evidence, aiming to provide a reference for the diagnosis and treatment of acute combination fractures of the atlas and axis in adults.

Traumatic cerebrospinal fluid leakage commonly presents in traumatic brain injury patients, and it may lead to complications such as meningitis, ventriculitis, brain abscess, subdural hematoma or tension pneumocephalus. When misdiagnosed or inappropriately treated, traumatic cerebrospinal fluid leakage may result in severe complications and may be life-threatening. Some traumatic cerebrospinal fluid leakage has concealed manifestations and is prone to misdiagnosis. Due to different sites and mechanisms of trauma and degree of cerebrospinal fluid leak, treatments for traumatic cerebrospinal fluid leakage varies greatly. Hence, the Craniocerebral Trauma Professional Group of Neurosurgery Branch of Chinese Medical Association and the Neurological Injury Professional Group of Trauma Branch of Chinese Medical Association organized relevant experts to formulate the " Chinese expert consensus on the diagnosis and treatment of traumatic cerebrospinal fluid leakage in adults ( version 2023)" based on existing clinical evidence and experience. The consensus consisted of 16 recommendations, covering the leakage diagnosis, localization, treatments, and intracranial infection prevention, so as to standardize the diagnosis and treatment of traumatic cerebrospinal fluid leakage and improve the overall prognosis of the patients.

Objective:To investigate the clinical effect of gracilis musculocutaneous flap in repair of perineal soft defect with open pelvic fracture.Methods:From June 2009 to June 2019, 11 cases of open pelvic fracture associated with perineal injury were treated in the Department of Trauma and Orthopaedic of 521 Hospital of Norinco Group. There were 4 males and 7 females aged 16-56 (33 in average) years old. Cause of injuries: 6 cases by traffic accident, 4 by falling from height, and 1 by crushing. All the patients had open pelvic fractures. According to Tile classification, 1 case was rated as type A, 7 as type B and 3 as type C. All the patients were accompanied with perineal injury and soft tissue defect. The wound sizes ranged from 5 cm×5 cm to 8 cm×12 cm. The defects were repaired with gracilis musculocutaneous flap. The size of gracilis myocutaneous flaps was 6 cm×5 cm to 9 cm×13 cm. All donor areas of the flap were sutured directly. After surgery, 11 patients treated with strengthened nutritional support, keep supine position to avoid abduction, and appropriately raise the lower limbs. Follow-ups were conducted regularly after surgery.Results:All patients entered 6 to 30 (22 in average) months of follow-up. All of 11 myocutaneous flaps survived, besides 1 had a few necrosis at the distal surface of the myocutaneous flap, and healed after change of dressing. All the incisions at donor site had stage I healing. The colour, texture and flexibility of the gracilis myocutaneous flap were good. There was a scar at the donor sites without causing obvious dysfunction. Over the follow-up period, there was no failure of flap in either the recipient and donor sites. The patients were satisfied with the appearance and function.Conclusion:Gracilis musculocutaneous flap is one of the ideal methods in repair of perineal soft tissue defect with open pelvic fracture.

Objective:To analyze the molecular epidemiological characteristics of GⅡNorovirus (NoV) infection in children in Tianjin Children′s Hospital in 2018.Methods:Single center study. From January to December 2018, a total of 2 185 stool specimens were collected from the children with acute gastroenteritis suspected caused by virus infection in Tianjin Children′s Hospital. Norovirus was detected by real-time fluorescence reverse transcription polymerase chain reaction (RT-PCR).The capsid protein VP1(VP1) region of positive samples was amplified and sequenced. The phylogenetic tree was constructed by MEGA5.05 for analyzing the results. The detection of NoV in different age groups and different months were compared by SPSS 20.0.Results:Among the 2 185 stool specimens,610 were NoV positive, the positive rate was 27.9% (610/2 185).All of the positive samples were GⅡgenogroup. Seven genotypes were found, with GⅡ.3 subtype accounting for 46.2%(151/327),GⅡ.4 subtype accounting for 40.1%(131/327),GⅡ.2 subtype accounting for 4.6%(15/327), other subtypes accounting for 9.1%(30/327).There was a significant difference in NoV detection rate among different age groups (χ 2=17.050, P=0.002). Among the positive specimens, the detection rate of less than or equal to 3 years old was the highest which is accounting for 89.2%.Also there was a significant difference in NoV detection rate among different months(χ 2=225.153, P<0.001).November and December are the most frequent months. There was significant difference between GⅡ.3 and GⅡ.4 NoV infection in children with granulocytopenia (χ 2=11.270, P=0.001) , and also in children with respiratory symptoms (χ 2=7.257, P=0.007) . Conclusions:GⅡ.3 and GⅡ.4 were the main genotypes of NoV infection in children in Tianjin in 2018. The Multiple genotypes suggests that the monitoring and prevention of NoV infection in children should continue to be strengthened in the future.

Methods for achieving diagnosis of Parkinson's disease (PD) based on speech data mining have been proven effective in recent years. However, due to factors such as the degree of disease of the data collection subjects and the collection equipment and environment, there are different categories of sample aliasing in the sample space of the acquired data set. Samples in the aliased area are difficult to be identified effectively, which seriously affects the classification accuracy of the algorithm. In order to solve this problem, a partition bagging ensemble learning is proposed in this article, which measures the aliasing degree of the sample by designing the the ratio of sample centroid distance metrics and divides the training set into multiple subsets. And then the method of transfer training of misclassified samples is used to adjust the results of subset partitioning. Finally, the optimized weights of each sub-classifier are used to integrate the test results. The experimental results show that the classification accuracy of the proposed method is significantly improved on two public datasets and the increasement of mean accuracy is up to 25.44%. This method not only effectively improves the classification accuracy of PD speech dataset, but also increases the sample utilization rate, providing a new idea for the diagnosis of PD.
Algorithms ; Data Mining ; Humans ; Machine Learning ; Parkinson Disease ; diagnosis ; Speech

Objective To study the effect of olanzapine combined with repetitive transcranial magnetic stimulation(rTMS) in the treatment of phonism dominated schizophrenia.Methods From August 2015 to November 2016,112 patients with phonism based schizophrenia in Ningbo Kangning Hospital were selected in the research . According to the different treatment ,the patients were divided into observation group and control group ,with 56 cases in each group.The observation group was treated with olanzapine combined with rTMS chemotherapy ,the control group was treated with olanzapine.Before and after treatment,the positive and negative symptom scale ( PANSS) score, Wisconsin Card Sorting Test ( WCST) score of the two groups were observed.The clinical efficacy was compared between the two groups.Results Before treatment,there were no statistically significant differences in PANSS score and WCST score between the two groups ( all P＞0.05).After treatment for 1 week,2 weeks,4 weeks,the PANSS scores of the two groups were significantly lower than those before treatment (F＝170.710,106.028,28.530,30.328, 25.806,10.832,203.342,372.253,all P＜0.05).The PANSS scores decreased more significantly in the observation group.After treatment for 1,2,4 weeks,the scores of positive symptoms in the observation group were (25.95 ±3.50)points, (24.72 ±4.50)points and(16.51 ±2.70)points,respectively,which were significantly lower than those in the control group[(27.27 ±2.03)points,(27.80 ±5.37)points,(19.53 ±3.07)points](t＝2.441,3.290,5.528,all P＜0.05).After treatment for 1 week,2 weeks,4 weeks,the continuous response scores in the observation group were (45.62 ±5.41)points,(44.69 ±4.91) points,(35.89 ±3.30) points,respectively,which were significantly lower than those in the control group[(50.61 ±5.35)points,(46.80 ±5.14)points,(42.70 ±5.04)points](t＝4.908, 2.221,8.459,all P＜0.05).The scores of continuous errors in the observation group were (49.47 ±4.59) points, (46.53 ±6.05) points and (36.35 ±5.18) points,respectively,which were lower than those in the control group [(83.1 ±6.58)points,(81.85 ±6.70)points and (76.86 ±76.86)points](t＝31.369,29.279,38.464,all P＜0.05).After treatment for 1 week,2 weeks,the classification scores in the observation group were (4.21 ±2.03) points and (5.35 ±2.23) points,respectively,which were significantly higher than those in the control group [(3.35 ±1.24)points and (3.95 ±1.24)points] (t＝2.705,4.106,all P＜0.05).The effective rate was 91.0%in the observation group ,which was 89.2%in the control group,there was no statistically significant difference (χ2＝0.022,P＞0.05).Conclusion Olanzapine combined with rTMS is effective in the treatment of schizophrenia ,and olanzapine combined with rTMS is more effective in improving the cognitive ability of patients than olanzapine alone .

Objective To investigate the effects of methylation inhibitor 5-Aza-2'-deoxycytidine (5-Aza-dC) on biological behavior of esophageal squamous carcinoma cell (ESCC) lines KYSE140 and KYSE150. Methods KYSE140 and KYSE150 cell lines were divided into the blank group, the control group and the experimental group. The cells in the blank group didn't do the treatment, and the cells in the control group were added to DMSO 2 μmol/L, while in the experimental group, cells were treated with different concentration (1, 2, 3 and 4 μmol/L) of 5-Aza-dC which affected respectively at different time (24, 48, 72 and 96 h). Cell proliferation was detected by using methyl thiazolyl tetrazolium (MTT) assay and the optimal drug concentration and time point were selected. Transwell assay was performed to detect the change of cell migration and invasion. Flow cytometry was used to observe the effects of drugs on cell apoptosis and cell cycle.The expression of PARP,Caspase-3,CCNB-1,and CCNE-1 were detected by Western blot. Results MTT result showed that the effective function time of 5-Aza-dC on KYSE140 and KYSE150 was 96 h at the concentration of 4 μmol/L. Under this condition, the cell ability of migration and invasion was decreased significantly. The migrated cell number of KYSE140 and KYSE150 respectively in the blank group, the control group and the experimental group was (193.3±8.6), (184.0±10.4), (61.7±7.1) and (112.0±6.4), (101.3± 7.9), (26.3±5.7). The invasive cell number was (47.3±7.3), (38.7±5.1), (8.0±3.9) and (83.3±6.8), (74.7±5.7), (21.0±2.7), respectively. The difference was statistically significant (P <0.05). Flow cytometry revealed that 5-Aza-dC increased the apoptosis of KYSE140 and KYSE150. The apoptosis rate of the blank group, the control group and the experimental group was (2.8±0.3) %, (11.2±0.7) %, (18.6±0.6) % for KYSE140 and (2.7±0.4)%,(9.8±0.4)%,(17.7±0.5)% for KYSE150.Compared with the other two groups,the cell number of G2/M phase in the experimental group was increased remarkably (P < 0.05). PARP and Caspase-3 were sheared evidently and the protein expression of CCNB-1 was up-regulated while the expression of CCNE-1 was down-regulated in the experimental group. Conclusion 5-Aza-dC can inhibit the proliferation and promote apoptosis of ESCC cells.