Objective To compare clinical outcomes of clavicular hook plate and coracoclavicu-lar screw fixation in treatment of acrmioclavicular dislocation (Tossy Ⅲ). Methods From August 2003 to January 2008,38 patients with acromioclavicular dislocation (Tossy Ⅲ) were randomly divided into two groups that were treated with coracoclavicular screw and clavicular hook plate fixation respective-ly. The range of shoulder movement was restricted after operation until the fixation was removed three months later. The shoulder function was evaluated by using Japanese Orthopedic Association (JOA) sco-ring system. The functional scores were compared before and after removal of the internal fixation in two groups. Results All patients were followed up, which showed no statistical difference upon final shoulder function of two groups. There was no loosening or migration of internal fixators. No redislocation occurred after removal of internal fixations. Seven patients complained shoulder pain and three had severe shoulder pain affecting sleep quality in coracoclavicular screw group. The pain was alleviated after remov-al of fixation. Conclusions Coraeeclavicular screw and clavicular hook plate fixation have similar clinical effect in treatment of acromioclavicular dislocation (Tossy Ⅲ), with satisfactory recovery of shoul-der function. Many complications of acromioclavicular fixations can be avoided by restriction of shoulder movement after operation and early functional exercise after removal of fixation.

Objective To explore clinical and radiographic outcomes of unstable distal clavicle fractures (Neer ⅡB) fixed with lateral clavicle anatomic locking compression plate (LCP).Methods Between January 2009 and October 2010,eleven consecutive patients with unstable fractures of the distal clavicle (Neer ⅡB) were treated using lateral clavicle anatomic LCP.There were 9 men and 2 women,with the mean age of 37.2 years (range,23-43 years).The right shoulder was involved in 6 patients and the left in 5 patients.The interval between injuries to operation was 24-72 h (mean,48 h).After fracture reduction,the plate was place on superior of the distal clavicle.According to the distal fragment length,3 to 6 locking screws were carefully inserted,3 locking screws were used to fix proximal fractures.Coracoclavicular ligament was not repaired.Functional recovery of the shoulder joint was assessed using the American Shoulder and Elbow Surgeons (ASES) rating scale score.Plain radiographs of clavicles were used to assess bony union.Results All the patients were followed up for 9 to 12 months (mean,10.3 months).Solid bony union was eventually achieved in all patients.The mean ASES scores were 89.1 (range,84-91) on the injured side versus 96.2 (range,94-100) on the contralateral side.No implant-related fracture,fixation failure and rotator cuff injury occurred.Conclusion Lateral clavicle anatomic LCP fixation in the treatment of distal clavicular fractures is a reliable and simple technique.

Objective To evaluate the efficacy and safety of 650 nm,810 nm diode laser on the treatment of moderate to severe acne.Methods A total of 87 patients with moderate to severe acne were divided into diode laser group (group A) and medication group (group B).In group A,the patients were irradiated with 650,810 nm diode laser at the fluence of 400-450 mW distance of 2-3 cm.In group B,the patients were treated with roxithromycin combined with vitamin B6 and gel lincomycini.Clinical follow-up was performed every week for 4 months.All the adverse effects were recorded.Results There was no significantly statistical difference in the cure rate between the two groups (group A versus group B at 2 weeks:65.0 ％ versus 42.6 ％,P＞0.05; at 4 weeks:92.5 ％ versus 76.5 ％,P＞0.05).However,the recurrence rate of group A was much lower than that of group B (30.0 ％ versus 61.7 ％,P＜0.01).There were no severe adverse effects in both groups during the period of the follow-up.Conclusions Compared to the medication,650,810 nm diode laser appears to be associated with lower recurrence rate in the treatment of moderate to severe acne.

Objective To evaluate the value of mean platelet volume (MPV) in identifying the location of infarct at left circumflex artery (LCX) in patients with non-ST-elevation myocardial infarction (NSTEMI).Methods In this retrospective study,184 consecutive patients with NSTEMI were eligible to be enrolled from January 1,2009 to June 30,2011 and laboratory examinations including platelet count,B-type natriuretic peptide (BNP),troponins test (TnI),C-reactive protein and serum creatinine (SCr) were done.The demographics and detailed history of patients were documented.In addition,left ventricular ejection fraction (LVEF) test and coronary angiography to determine the culprit vessel implicating in infarction were carried out in all enrolled patients.The patients were categorized into LCX group and N-LCX group according to culprit vessel.Results Of 184 patients,68 patients were in LCX group and 116 patients had left anterior descending artery (LAD) lesion or right coronary artery (RCA) lesion.High percent of LCX infarction were found in patients with high MPV level and low BNP level,and in smokers.And lower proportion of those patients had previous percutaneous coronary artery intervention.The results showed that MPV was larger in patients with LCX infarction than that in patients with LAD or RCA.Receiver operating characteristic curve showed the area under curve was 0.75 (95％ CI:0.675-0.826).An optimized cut off point at 9.15 fL of MPV showed 83.8％ sensitivity and 63.8％ specificity for prediction of LCX infarction.Multivariate analysis also showed that MPV was the only independent predictor of a LCX infarction in patients with NSTEMI [OR=1.32,(95％ CI:1.031-1.688),P＜0.05].Conclusions MPV was the only independent factor associated with LCX infarction in patients with NSTEMI.

Objectives: To study the correlation between plasma matrix metalloproteinase 9(MMP 9) concentration and acute lung injury following cardiopulmonary bypass(CPB). Methods: Human plasma was obtained after informed consent from twenty patients undergoing CPB. Plasma was collected at the beginning of CPB, 5 minutes after the initiation of CPB, at the termination of CPB, 1 hour after the termination of CPB and 6 hours after the termination of CPB. All samples were analyzed by standard enzyme linked immunosorbent assay (ELISA). A aDO 2 and respiratory index (RI) was measured at the termination, 1 hour and 6 hours after termination of CPB. The cross clamp times, CPB times and the time to extubation was recorded. Data were expressed as means ?SE and assessed by analysis of variance (ANOVA).The regression analysis was utilized to define the correlations of variables measured( A aDO 2 ,RI, cross clamp times, CPB times and the time to extubation ) at the end of CPB. Results: Plasma MMP 9 concentration was significantly increased at the end of CPB (430.6?50)?g/L( P

ObjectiveTo explore the ideal minimally invasive surgical method for degenerative lumbar spine stenosis.MethodsFrom March 2008 to August 2010,73 cases with lumbar spinal stenosis underwent minimal invasive surgery were retrospectively analyzed.The patients were divided into different groups by clinical features,imaging manifestations,and concurrent diseases.The minimal invasive surgical methods were chosen according to the classification.Operation time,intra-operative bleeding,and complications were recorded.The lumbar function was evaluated by Oswestry disability index (ODI),and the clinical results were assessed by JOA pre- and postoperatively.ResultsMinimal invasive surgery was completed in all cases,which included 25 cases with bilateral decompression and 48 cases with unilateral approach for bilateral decompression.Twenty-three cases used interbody fusion and percutaneous pedicle screw fixation after decompression.Intraoperative blood loss and operation time were related to surgical methods.One case was complicated with dural tear.Cage was inserted into upper vertebral body during interbody fusion in 1case with osteoporosis,removed the cage and implanted bone fusion.Incisions of 3 cases were poor healing after surgery.The average follow up time was 13 months(range,10-35).JOA score and ODI before surgery were 9.2±5.1 and 62.3％±18.5％ respectively; while 6 months after surgery,JOA score and ODI were 23.5±7.2 and 18.4％±6.4％ respectively.JOA score and ODI showed statistically significant improvements after operation(P＜0.01).Twenty-two cases got solid fusion at the final follow-up.ConclusionTreatment of lumbar spinal stenosis by minimal invasive surgery has satisfactory surgical outcomes,but the proper minimal invasive strategy should be chosen according to specific patients,surgeons and hospitals.

Objective: The present study aims to summarize the clinical experience in the surgical treatment of thoracic aortic dissecting aneurysm.Methods: We retrospectively analyzed the clinical data of 115 cases of thoracic aortic dissecting aneurysm treated by surgery from December 1995 to December 2006.Thirty-eight of them were DeBakey type I aortic dissection,18 type Ⅱ,and 59 type Ⅲ.Of the 38 DeBakey type I patients,30 underwent ascending aorta with total aortic arch replacement(2 cases of total thoracic aortic artificial vessel replacement,25 Wheat procedure and 3 aortic valvuloplasty) and the other 8 received ascending aorta with semi-aortic arch replacement.Of the 59 DeBakey type Ⅲ patients,36 underwent descending aortic aneurysm resection with artificial vessel replacement via left posterolateral thoracic incision by left heart bypass or aorta to artery bypass(using Cott tubes),while the other 23 received endovascular stent-graft exclusion in descending aorta via the femoral artery.Results: All the patients were successfully treated except 5 that died during the perioperative period.The survivors were followed up for 3-118 months,among whom 2 died long-term death after the operation and the others were living healthy.Conclusion: Surgical treatment improves the clinical outcome of thoracic aortic dissecting aneurysm.Bilateral perfusion via the carotid artery in aortic arch replacement has a definite cerebral protective effect.Surgical procedures can be simplified by using the modified elephant trunk technique.Endovascular stent-graft exclusion is safe and effective in the treatment of DeBakey type Ⅲ aortic dissection.

Cholecystolithiasis is a common clinical disease, which can be secondary to cholecystitis, cholangitis, pancreatitis and gallbladder cancer. Many patients with gallstone have no obvious clinical symptoms such as biliary colic. Some patients are indeed asymptomatic because there are not obstruction and inflammation. However, some patients have no symptoms due to ignorance, mistaken for stomach pain, enteritis, etc. Some patients have no symptoms because of insensitivity and insufficient perception. For other patients with abnormal gallbladder morphology and structure, non-functional gallbladder must be no pain. To clarify the concept, diagnosis and classification of asymptomatic gallstones according to pathophysiological stages is conducive to the development of personalized management strategies. According to guidelines formulated by different periods, different regions and different medical institutions, there are many controversies regarding the management of asymptomatic gallstones, including regular follow-up, drug treatment, surgical resection or gallblades-saving lithotomy. Reasonable personalized diagnosis and treatment requires more in-depth basic research evidence.

Gallstone is a common and frequent disease and frequent incidence, secondary infection and cancer seriously affect the health of patients. Academic organizations in different regions have issued multiple guidelines and consensus to promote the normative diagnosis and treatment of gallstones. However, in clinical practice, most symptomatic gallstones are treated, while the formation and prevention process of gallstones are ignored, making the concept of treating without a disease has not been strengthened.This article reviews the risk factors and mechanisms of gallstone formation, and points out the importance of effective prevention during stone formation. In the stage of gallstone formation, the high risk factors of stone formation can be analyzed through two aspects of injury factors and protective factors, and the high risk groups of stone formation can be screened out. According to the pathophysiological progression of gallstones, personalized prevention and follow-up strategies can be developed for the stone formation stage of gallstones.

Gallstones and acute calculous cholecystitis are common diseases in surgery. China has entered an aging society. Elderly patients are a high incidence group of gallstones and acute calculous cholecystitis. Their surgical diagnosis and treatment strategies need to be formulated individually, and reasonable diagnosis and treatment methods should be comprehensively selected according to the patient′s condition and the medical level of the medical institution. For those who are in good physical condition and can tolerate the operation, it is recommended to give priority to surgical treatment, and the minimally invasive surgery mainly suitable for laparoscopic cholecystectomy (LC) is preferred. Open surgery is more appropriate for complicated conditions or patients whose general conditions are not suitable for laparoscopic surgery. Other minimally invasive treatment measures can be applied at the same time. For patients who can not tolerate surgical treatment, puncture, endoscopy, intervention and other means can be selected, combined with drugs for conservative treatment, so as to obtain the opportunity of surgical treatment or improve the prognosis. In this paper, the latest research literature at home and abroad has been collected to review and summarize the latest research progress in the physiology and aging characteristics of the biliary tract in the elderly, the diagnosis and treatment of gallstones and acute calculous cholecystitis. It is hoped that this paper can provide reference for the clinical diagnosis and treatment of such diseases, and think and prospect the future research.