Correction of tibial multiplanar deformities using single Taylor external fixator combined with biplanar osteotomy / 中国修复重建外科杂志

OBJECTIVE@#To investigate the effectiveness of single Taylor external fixator combined with biplanar osteotomy on correction of tibial multiplanar deformities.@*METHODS@#Between October 2016 and December 2021, 11 patients with tibial multiplanar deformities (20 sides) were treated with single Taylor external fixator and biplanar osteotomy. Of them, 4 were male and 7 were female; the average age ranged from 13 to 33 years (mean, 21.9 years). Diagnosis included rickets severe genu varum deformity (7 cases, 14 sides), rickets severe genu valgum deformity (2 cases, 4 sides), multiple osteochondromatosis calf deformity (1 case, 1 side), neurofibromatosis medial lower leg anterior arch deformity with short of leg (1 case, 1 side). After fibular osteotomy and tibial multiplanar osteotomy, a Taylor external fixator was installed. After operation, the deformities were corrected successively and fixed completely. The osteotomy healed, then the external fixator was removed. Before operation and at 12 months after operation, the full-length X-ray films were taken. The leg-length discrepancy, medial proximal tibial angle (MPTA), lateral distal tibial angle (LDTA), posterior proximal tibial angle (PPTA), anterior distal tibial angle (ADTA), and tibial rotation angle were measured. The degree of lower limb deformity was scored with reference to a customized tibial mechanical axis scoring table.@*RESULTS@#Osteotomy was successfully completed without neurovascular injury and other complications. The external fixator was adjusted for 28-46 days, with an average of 37 days, and the external fixator was worn for 136-292 days, with an average of 169 days. Mild needle infection during the fixation period occurred in 3 sides, refracture at the distal tibial osteotomy in 1 side after removing the external fixator, and nonunion of the distal fibular osteotomy in 1 side. All patients were followed up 369-397 days (mean, 375 days). At 12 months after operation, the lower limb discrepancy decreased, but there was no significant difference ( P>0.05). MPTA, LDTA, PPTA, ADTA, and tibial rotation angle improved, and the differences in LDTA, ADTA, and tibial rotation angle were significant ( P<0.05). The score of lower limb deformity was significantly higher than that before operation ( P<0.05), and the results were excellent in 9 sides, good in 8 sides, fair in 3 sides, with the excellent and good rate of 85%.@*CONCLUSION@#Single Taylor external fixator combined with biplanar osteotomy is effective in the correction of tibial multiplanar deformities.

Methyltransferase like 13 mediates the translation of Snail in head and neck squamous cell carcinoma / 国际口腔科学杂志·英文版

Methyltransferase like 13 (METTL13), a kind of methyltransferase, is implicated in protein binding and synthesis. The upregulation of METTL13 has been reported in a variety of tumors. However, little was known about its potential function in head and neck squamous cell carcinoma (HNSCC) so far. In this study, we found that METTL13 was significantly upregulated in HNSCC at both mRNA and protein level. Increased METTL13 was negatively associated with clinical prognosis. And METTL13 markedly affected HNSCC cellular phenotypes in vivo and vitro. Further mechanism study revealed that METTL13 could regulate EMT signaling pathway by mediating enhancing translation efficiency of Snail, the key transcription factor in EMT, hence regulating the progression of EMT. Furthermore, Snail was verified to mediate METTL13-induced HNSCC cell malignant phenotypes. Altogether, our study had revealed the oncogenic role of METTL13 in HNSCC, and provided a potential therapeutic strategy.

Analysis of surveillance data of iodine deficiency disorders in Rizhao City of Shandong Province from 2016 to 2018 / 中华地方病学杂志

Objective:To analyze the monitoring results of iodine deficiency disorders among residents in Rizhao City, Shandong Province, from 2016 to 2018.Methods:Information of monitoring data on iodine deficiency disorders of residents of Rizhao City, Shandong Province from 2016 to 2018 was collected from the Center for Disease Control and Prevention of Rizhao City, Shandong Province. The analysis carried out included iodine content of drinking water for residents of Rizhao City in 2017; iodine contents of salt in the home of 8 - 10 years of children, pregnant women; urine iodine levels of 8 - 10 years of children, pregnant women; and thyroid volume of 8 - 10 years of children from 2016 to 2018.Results:A total of 431 drinking water samples were collected in Rizhao City in 2017, the median of iodine in water was 4.8 μg/L. In 2016 - 2018, the rate of non-iodized edible salt in the homes of children and pregnant women in Rizhao City were 11.09% (153/1 380), 19.07% (302/1 584) and 6.92% (90/1 301); the consumption rate of qualified iodized salt were 80.94% (1 117/1 380), 65.03% (1 030/1 584) and 84.63% (1 101/1 301), respectively. Of these, the highest rate of non-iodized edible salt was in 2017 (χ 2 = 75.38, P < 0.05), and with the lowest consumption rate of qualified iodized salt (χ 2 = 56.52, P < 0.05). Totally 829, 891 and 881 urine samples were tested for 8 - 10 years of children, and the medians of urine iodine were 195.8, 243.0 and 164.8 μg/L, respectively. Totally 396, 381 and 420 urine samples were tested for pregnant women, and the medians of urine iodine were 161.5, 148.3 and 105.2 μg/L, respectively. The rates of goiter in 8 - 10 years of children were 1.50% (13/866), 0.89% (8/901) and 1.25% (11/881), respectively, and the difference between years was not statistically significant (χ 2 = 1.41, P > 0.05). Conclusions:Rizhao City is an area of environmental iodine deficiency, local residents iodine nutrition in general is at an appropriate level. However, pregnant women show iodine deficiency in recent years, which will be the focus of scientific iodine supplementation measures.

Development and evaluation of a cell model targeted on GLP-1 receptor / 中国药理学通报

Aim To establish a cell model targeting on GLP-1 R,and evaluate its function by the cAMP assay,for screening the new class of GLP-1 analogues as anti-diabetic candidates. Methods An eukaryotic expression vector pEGFP-GLP-1 R was constructed and transfected into HEK293A cells.After selecting with G41 8,a cell line stably expressing GLP-1 R-GFP was estab-lished.The expression and the cellular distribution of GLP-1 R-GFP fusion protein were investigated by Western blot and fluo-rescence microscopy.Then,the activity of GLP-1 analogue Lira-glutide was evaluated by monitoring the content of cAMP via HTRF using this cell model.Results GLP-1 R-GFP-293A cell line was successfully established.GLP-1 R-GFP fusion proteins were mainly distributed in the cell membrane.The dose-respon-sive relationship experiments revealed that cAMP could be effec-tively stimulated by Liraglutide using this cell model.Conclu-sion This cell model could be used to detect the bioactivity of GLP-1 analogues in vitro,which lays a foundation for the screen-ing of GLP-1 analogues and small GLP-1 R agonists.

Effect of Comprehensive Chinese Medical Therapy of Chinese Herbal Medicine Fumigation, Massage and Quadriceps Exercise on Contents of Visfatin and Chemerin in Joint Fluid of Patients with Knee Osteoarthritis / 广州中医药大学学报

Objective To study the effect of comprehensive Chinese medicine therapy,including Chinese herbal medicine fumigation,massage,and quadriceps exercise,on adipokines of visfatin and chemerin content in joint fluid of patients with knee osteoarthritis (KOA),and to explore its possible therapeutic mechanism for KOA.Methods A total of 60 cases of KOA patients were randomly divided into treatment group and control group,30 cases in each group.The treatment group was treated with comprehensive Chinese medicine therapy,and the control group was treated with Chinese medicine fumigation alone.After treatment for 2 weeks,the clinical efficacy of both groups was evaluated,and the changes in the scores of the Western Ontario and McMaster Universities Arthritis Index (WOMAC)were observed.Moreover,the contents of visfatin and chemerin in jointfluid were examined.Results (1) The total effective rate of the treatment group was 96.7％ and that of the control group was 83.3％,the difference being significant (P ＜ 0.01).(2) After treatment,WOMAC scores of both groups were obviously decreased(P ＜ 0.01 compared with those before treatment),and the decrease in the treatment group was superior to that in the control group (P ＜ 0.01).(3) The contents of visfatin and chemerint in joint synovial fluid of both groups were decreased (P ＜ 0.01 compared with those before treatment),and the decrease in the treatment group was superior to that in the control group(P ＜ 0.05).Conclusion The comprehensive Chinese medicine therapy of Chinese herbal medicine fumigation,massage and quadriceps exercise is effective for the treatment of KOA,and can decrease the contents of visfatin and chemerin in joint fluid of KOA patients,which may be one of its therapeutic mechanisms.

Microstructural white matter lesion in Alzheimer's disease：a diffusion tensor imaging study using vox- el-based analysis / 中国神经精神疾病杂志

Objective To study the microscopic changes of white matter and the relationship between white matter changes and cognitive impairment in Alzheimer's disease (AD) using voxel-based analysis of DTI. Methods Thirty-sev?en patients with probable AD,and 32 normal controls(NC) were all examined by MMSE scores, and underwent a diffusion tensor imaging. The value of FA changes and the correlations between FA and MMSE scores were investigated. Results FA reduction was detected in the right frontal, temporal and parietal lobes as well as the thalamus, the bilateral cingu?lum, corpus callosum, precuneus, inferior parietal lobule, inferior patieto gyrus, supramaginal gyrus and hippocampus in AD. FA values in the right cingulum, left corpus callosum, left inferior temporal gyrus and the bilateral inferior parietal lobule, inferior patieto gyrus and precuneus were significantly decreased in AD than in the health control groups (P<0.05, FWE corrected). There was a positive correlation between the values of FA and MMSE scores(P<0.001,uncorrect?ed). Conclusion AD patients have significant reduction of FA values in the specific regions. There is a positive correla?tion between white matter changes and impairments of cognitive function.

Hemodynamic factors to stabilize cerebral blood flow within limits of cerebral autoregulation / 中国神经精神疾病杂志

Objective To investigate the hemodynamic parameters to stabilize cerebral blood flow within limits of cerebral autoregualtion. Methods We assessed the flow velocity of middle cerebral artery using transcranial Doppler and recorded invasively the blood pressure simultaneously. We then analyzed the curves of cerebral blood flow autoregulation (CBFA) and calculated upper limit of autoregulation (ULA) and lower limit of autoregulation (LLA). The values of critical closing pressue (CCP) and resistance area product (RAP) were calculated according to previous theory. The relationship between CCP, RAP and MABP were analyzed. Results In the process of increasing or decreasing blood pressure, ULA and LLA of normal rats were 148.12 ± 7.49 mmHg or 62.96 ± 3.34 mmHg, respectively. When mean artery blood pressue (MABP) changed within limits of cerebral autoregulation, the cerebral blood flow velocity changed little (increasing:0.65± 0.27 cm/s/10mmHg MABP, decreasing:0.43±0.23cm/s/10 mmHg MABP), while CCP and RAP changed significantly (in?creasing: 4.60 ± 1.06 mmHg/10mmHg MABP and 0.11 ± 0.04/10 mmHg MABP, decreasing: 6.74 ± 0.59 mmHg/10 mmHg MABP and 0.09 ± 0.02/10mmHg MABP). After fixing change of blood flow velocity, CCP and RAP were correlated with MABP more remarkablely, although all blood flow velocity, CCP and RAP were significantly correlated with MABP. Conclusion Within limits of cerebral autoregulation, stable cerebral blood flow is mainly achieved by the change of CCP and RAP against blood pressure changing on normal rats, especially the increasing or de?creasing of CCP.

Computer-assisted external frame for correction of tibial and fibular deformity / 中华创伤骨科杂志

Objective To introduce a new computer-assisted external frame for osteotomy to correct complex tibial and fibular deformity.Methods From January 2012 to December 2013,15 patients with complex tibial and fibular deformity were treated with a computer-assisted external frame and related computer software for surgical correction.All were unilateral limb deformity,involving the left lower limb in 8 cases and the right lower limb in 7 cases.They were 8 males and 7 females,15 to 43 years of age (average,26.8 years).The deformity was caused by old osteomyelitis in 9 cases and trauma sequela in 6.The related angles,distances and rotations were measured on the postoperative radiographs of the lower limbs.The data were input into the software to calculate the daily adjustment lengths of the frame rods.Daily frame adjustments were conducted according to the data calculated.The frame was removed when expected results were achieved.The patients lived independently during the adjustment.Results The 15 patients were effectively followed up for 10 to 22 months (average,15 months).Frame fixation time averaged 8.4 months (from 5.5 to 13.1 months).The reunion time averaged 8.0 months (from 5.4 to 12.1 months).The hospitalization time averaged 2.4 months (from 2.0 to 2.8 months).In 10 cases of limb shortening,the shortening lengths averaged 0.5 cm (from 0 to 0.9 cm) after adjustment.In 12 cases of angulation deformity,the angulation averaged 3.3° (from 0° to 5.4°) after adjustment.In 5 cases of rotation deformity,the maximum internal rotation was 5° and the maximum external rotation 10° after correction,deviating from the normal values by 3.5° on average.In 6 cases of horizontal displacement,the displacements averaged 0.5 crn after correction.All patients were satisfactory with corrected lower limb alignment,improved symptoms and appearance,giving a subjective satisfaction rate of 100％.Conclusion Use of computer-assisted external frame in surgical correction of tibial and fibular deformity can achieve satisfactory outcomes in simple,accurate,standardized,minimally invasive manners.

Using Autologous Mastoid Cortical Bone during Cochlear Implantation / 听力学及言语疾病杂志

Objective To assessment the effect of autologous mastoid cortical bone to cover the mastoidetomy defect via transmastoid and posterior tympanotomy approach surgical technique during cochlear implantation in a ‐dults .Methods A total of 58 adults patients with profound sensorineural hearing loss accepted cochlear implantation from January 2010 and June 2014 ,which were using autologous mastoid cortical bone to cover the mastoidetomy de‐fect via transmastoid and posterior tympanotomy approach surgical technique .By observing postoperation complica‐tion the effect of surgery was evaluated .ABR were obtained for each patients at first ,third and sixth month after op‐eration .The patients which were not using autologous mastoid cortical bone to cover the mastoidetomy defect via transmastoid and posterior tympanotomy proach surgical technique acted as control group .Results No depression was found in the postauricuhtr site .None of the patients had experienced any immediate or delayed postoperative in ‐fection complication such as wound infection ,post - auricular abscess ,acute otitis media ,chronic otitis media ,in‐tracranial complication and necrotic of cortical bone .Autologous cortical bone cap had grew together with remnant cortical bone in all cochlear implantation patients .All implanted processor were in a good position ,all patients had good results after turning on the implant .The ABR thresholds were elevated about 70 dB compare to pre - operation values(P 0 .05) .Conclusion The tech‐nique of autologous mastoid cortical bone to cover the mastoidetomy defect in cochlear implantation surgery can pre ‐vent depression of the postauricuhtr site ,remain stability of the implanted processor ,and have a good aided hearing thresholds after operation .

The study of correlation between allergen and chronic sinusitis with nasal polyps / 安徽医科大学学报

We retrospectively analyzed 218 allergen skin prick tests ( SPT ) of the patients with chronic sinusitis with or without nasal polyps( CRSwNP/CRSsNP) before the operation. The proportions of positive SPT in CRSwNP and CRSsNP were compared respectively. The distributions of allergens were the same in all groups. The positive rate of SPT in CRSwNP was higher than that in CRSsNP, with statistical significance(P<0. 05). The positive rate of SPT in CRSsNP was higher than that of the control group, without statistical significance. The recurrence rate in CRSwNP was higher than that in CRSsNP, with statistical significance. The recurrence rate in the allergen-positive patients was higher than the allergen-negative patients, with statistical significance.

In vitro study of inhibitory effect of Ulinastatin against serine protease activity / 中国生化药物杂志

Objective To study inhibitory effect of serine protease activity by Ulinastatin in vitro .Methods Different chromogenic peptides were designed and synthesized.Highly sensitive fluorescence detection was performed to optimize the concentration of each serine proteases and their chromogenic substrates.Multi-point method was used for the calculation of half maximal inhibitory concentration of Ulinastatin .ResuIts Ulinastain could inhibit Polymorphonuclear leukocyte elastase ( PMNE ) and plasmin with IC50 lower than 100 U/mL.For factor Xa, and Kallikrein, the IC50 of Ulinastatin was higher than 1000U/mL.No thrombin IC50 could be calculated at the present experiments.ConcIusion Similar to Ulinastatin injection from Japan, domestic Ulinastatin shows the strongest inhibitory effects on PMNE among those serine proteases.As important references, this study gives reliable data for dose range of domestic Ulinastatin in anti-inflammation, coagulation/anti-coagulation and anti-shock therapy.

Preventive and Therapeutic Effects and Underlying Mechanisms of Danshen Injections in the Treatment of Hepatic Encephalopathy / 中国药师

Objective:To assess the preventive and therapeutic effects and primary mechanisms of Danshen injections in the treat-ment of hepatic encephalopathy ( HE) . Methods:The acute ammonia poisoning model induced by ammonium chloride was established in mice, and HE model with liver injury induced by carbon tetrachlorie and high blood ammonia induced by thioacetamide was made in rats. The time of death was detected in the first model, and the histamine levels in blood and brain, liver function and liver pathologi-cal histology changes were detected respectively in the other model. Results:In the acute ammonia poisoning experiment, the time of death in Danshen injections group was longer than that in the control group. Furthermore, Danshen injections could notably decrease the histamine levels in blood and brain, reduce the levels of ALT, AST, ALP and Tbil in serum and improve the function of liver to show the preventive and therapeutic effects on HE. Conclusion:Danshen injections exhibit promising preventive and therapeutic effects on HE, which may be related to decreasing histamine levels in blood and brain.

The Application Development of Plant-Based Environmental Protection Plasticizer.

Present research is aimed towards designing and development of environmental protection plasticizers using the fractionation heavy component in the industrial production of corn stalks as raw material. The plant-based rubber oil (PBRO) plasticizers are the reactants of the dihydric alcohols (Polyols) in heavy component with phthalic anhydride (PA) (the molar ratio of Polyols/PA as 2 : 1) at the temperature range of 180 -190ºC. The main advantage is that this substance does not contain any of the sixteen hazardous substances of PAHs (polycyclic aromatic hydrocarbons) and 38 hazardous substances of PAHs (polycyclic aromatic hydrocarbons) recorded in EU REACH regulation. In plasticization of NBR, the dosage of PBRO can reach 25 phr (parts per hundreds of rubber), but the plasticizing effects of PBRO is inferior to common rubber oil (paraffin oil, naphthenic oil, aromatic hydrocarbon oil and Dioctyl phthalate). In plasticization of SBR, the maximum amount of PBRO is 20 phr. Although the mechanical properties decrease; the aging resistance and thermal stability (the temperature of maximum weight losses of PBRO as 302ºC) are slightly higher than that of common rubber oil.

The imaging features of surrounding changes caused by bone tumors and tumor-like lesions / 中华放射学杂志

Objective To explore the imaging features of bone marrow edema(BME)and soft tissue edema(STE)caused by bone tumors and tumor-like lesions.Methods Ninety nine patients with bone tumors and tumor-like lesions which were proved by surgical pathology were reviewed.The patients were divided into benign and malignant groups.Evaluation parameters included the size and signal intensity of BME and STE,the features of enhancement,the bone sclerosis and its relation with BME,and joint effusion,et al.The data of two groups were analyzed by X2 test.Results There were 40 patients in benign group and 59 patients belonged to malignant group.BME and STE demonstrated low signal on T1-weighted images and high signal on fat-suppressed T2-weighted images.Some BMEs demonstrated low signal on T2weighted images,which corresponded to sclerosis on X-ray film and(or)CT.Both BME and STE demonstrated uniform enhancement.There were statistically significant differences between benign and malignant groups including the frequency of BME.sclerosis.the median of the size of the BME and STE (P0.05).Conclusions Both benign bone tumors and tumor-like lesions and malignant bone tumors can be accompanied by BME and STE.The size of BME in the benign bone tumors and tumor-like lesions is bigger than those in malignant ones,and the size of STE in malignant bone tumors is bigger than benign ones.

The investigation of prevalence rates of metabolic syndrome and its related diseases in Bengbu community residents / 中华老年医学杂志

Objective To investigate the prevalence rate of metabolic syndrome (MS) and its related diseases in Bengbu community residents. Methods 3246 residents aged from 25 to 74 years were chosen through cluster random sampling method, including 1459 males and 1787 females. MS and its related diseases were examined. Results (1) The prevalence rate and standardized rate of MS was 20. 5% and 16.0%, respectively, which reached higher level all over China. The prevalence rate of male and female was 22. 9% and 18. 6%, respectively. The highest prevalence rate occurred in presenium patients. (2)The prevalences of various metabolic diseases were increased with aging except for overweigh/obesity and MS (P<0.01). The prevalence of various metabolic diseases was 1 times higher in elderly patients than that in young patients, and the prevalence rate of MS in male and female increased to 2.8 times and 2.7 times, respectively. The prevalence rate of type 2 diabetes mellitus increased biggest, male to 7.9 times and female to 12.8 times compared with the original level. (3) The multiple components clustering rate of MS was high, only 33.8% of individuals had no metabolic disorder. Conclusions The prevalence rates of MS and its related diseases are high in Bengbu community residents. It is necessary to take comprehensive measures to prevent and control MS in community.

Joint distraction apparatus and Ilizarov technique for correcting deformities of the knee and ankle joint caused by muscular contracture of the leg / 中国组织工程研究

30? in 2 cases. All these patients were treated using orthosis. CONCLUSION: Based on Ilizarov’s technique and principle, the individualized designed external distraction apparatuses are fixed around the knee and the ankle-foot by transcutaneous steel pins. Slow mechanical distraction gradually corrects the flexion deformities of the knee and clubfoot.

Evaluation of distraction apparatus for correcting flexion contractures deformities of the knee joint / 中国矫形外科杂志

[Objective]To study the safety,clinical effect and therapeutic characteristics of distraction apparatus for correcting flexion contracture deformities of the knee joint by evaluating the clinical outcomes and investigating the results of biomechanic test.[Method]Forty-nine patients (included 52 knees) were treated by the standardized distraction apparatus and the comprehensive assessment standard was adopted to evaluate the clinical outcomes.Five patients were examined by three-dimensional CT of the knee joints pre-operatively and post-operatively to observe the changes in the knee structure.To observe the effect of distraction on the popliteal artery and the limb nerves,the popliteal artery diameter and blood flow speed were examined in 15 patients and the regio cruris electromyogram and nerve conduction velocity were examined in 6 patients before and after treatment.Three different means of distraction and measurement were underwent in 3 patients so as to observe the changes in the flexion curve and force of posterior soft tissues of the knee.[Result]All patients (52 knees) regained congruous structure and better function,the final excellent and good result rate was 65%.Three-dimensional CT examination of 5 patients showed that the postoperative knee joint structures were superior to the preoperative ones and there weren't damage of articular surface.The statistic results indicated that the popliteal arteries weren't obviously disturbed by distraction,whereas the limb nerves were probably disturbed temporarily.Three methods of distraction and measurement in 3 patients showed different outcomes,indicating that the effect of distraction on soft tissues was influenced by the distraction method,the ages of patients and the extents of deformities of the limb.[Conclusion]The distraction speed of therapeutic method is safe,reasonable and effective in correcting flexion contracture of the knee joint;The distraction force on posterior soft tissues of the knee is influenced by various elements,thus,the distraction speed should be individualized.Low-load and steady stretch are advantageous to soft tissue regeneration and safer.

A clinical study of Ilizarov's technique for correcting severe flexion contracture of knee joint / 中国矫形外科杂志

[Objective]To explore the methods and effect of using Ilizarov'techniques for correcting severe flexion contracture of the knee joint.[Method]According to Ilizarov's tension-stress principle and its applying technique,the knee joint distraction apparatus was designed and fixed individually.The joint hinges of the apparatus on the two sides were consistent with the rotational center of the knee joint.Joint distraction of 5 to 10 mm was initially performed and followed by gradual correction of the knee joint flexion contracture at an average rate of 1 mm per day at the level of the knee joint by turning the nuts on the distraction rods at 3～4 rounds per day,with the distraction rate modified according to the patient's tolerance.Regular x-ray exams should be carried out to prevent knee joint dislocation and compression of the articular cartilage.The final requirement of correcting the soft tissue flexion deformity of the knee joint was to overcorrect the joint deformity into 5～10 degrees of hyperextension.As for the joint flexion with anterior bowing deformity of the distal femur,the degree of correcting the knee joint flexion contracture should deduce the degree of the bony deformity.The frame was left on for an additional 2 to 4 weeks.When the frame was removed,the knee joint was immediately casted in full extension for 3 to 4 weeks followed by the range of motion exercise on CPM to regain the knee motion and a long-leg brace was provided simultaneously to maintain the correction for 3 months.Secondary osteotomy was performed on anterior bowing deformity of the distal fermur in 8 patients.[Result]More than 30 degrees of severe flexion contracture of knee joint (mean?sd 58.50?21.28?) in 49 patients (52 knees ) were corrected to an average of 4.12?4.61 degrees after treatment.40 joints of 38 cases were followed for an average of 6.8 months,in which 28 joints maintain the postoperative effect.,while 12 joints had partial relapse of 9.30??8.24?.[Conclusion]Ilizarov's technique for correcting severe flexion contracture of the knee joint,can have satisfactory effect with little complications.It is mini-invasive,reliable and safe.

Ilizarov technique for correcting clubfoot / 中国矫形外科杂志

Severe clubfoot has complicated clinical features.Conventional surgical management could hardly get satisfactory results,always with serious trauma,and even smaller foot.This paper summarizes the characteristics of clubfoot in details and its relative assessment standard,principles and advantages of Ilizarov's technique,design of the apparatus and correction procedures.Combination of this and traditional technique and reasonable osteotomy method are also analyzed,complications are discussed for prevention.

A study on patterns and lower limit's measurement of cerebral blood flow autoregulation of hypertensive rats / 中国病理生理杂志

AIM:To study the effect of hypertensive arteriosclerosis on cerebral blood flow autoregulation (CBFA), and to introduce a new method to measure the lower limit. METHODS:The blood velocities and blood pressure was recorded simultaneously and the curves of CBFA were analyzed and classified into classical and non-classical pattern. The lower limit were determined by clinical closing pressure (CCP) and the curve CBFA. RESULTS:When the blood pressure was decreasing, the classical and non-classical pattern of the cerebral blood flow autoregulation were 25% and 75% respectively in normal SD rats, while they were 40.55% and 54.45% respectively in renovascular hypertensive rats (RHR). However, when the blood pressure was elevating, the classical and non-classical pattern were 76.47% and 23.53% respectively in SD rats, while they were all classical in RHR. Furthermore, in SD and RHR ras, the lower limits measured by CCP were well in accordance with that measured by CBFA. CONCLUSION:Hypertensive arteriosclerosis could influence the limits and the patterns of cerebral blood flow autoregulation. The lower limit of CBFA can be measured and analyzed by CCP.