BACKGROUND:Bennett fracture repair is one of the problems for orthopedic surgeons, although there are a variety of clinical treatment for Bennett fracture, no treatment strategy is widely accepted. ＜br> OBJECTIVE:This study aims to provide evidence for developing an effective treatment strategy for Bennett fracture. ＜br> METHODS:A computer-based retrieval of PubMeb database (http://www.ncbi.nlm.nih.gov/PubMed), CNKI China Journal Ful-Text database (http://www.cnki.net/) and Wanfang database (http://g.wanfangdata.com.cn/) between January 2004 and July 2014 was performed by the first author. Meantime, Campbel ’s Operative Orthopaedics, Shiyong Guke Xue and other orthopedic monographs were manual y retrieved, to analyze research progress about Bennett fracture. ＜br> RESULTS AND CONCLUSION:A total of 37 literatures associated with Bennett fracture were involved in this study. Conventional closed reduction plaster or Kirschner wire fixation is characterized by low cost and easy operation, but it fails to achieve anatomical reduction. AO principle for fracture treatment has been widely accepted in recent years, the application of AO screw and AO plate is increasing in treatment of Bennett fracture, it can not only repair bone fracture but also repair and reconstruct the damaged ligament, but the cost is very high and secondary surgery is needed to remove the implant. Traditional Chinese orthopedics and integrated traditional and western medicine are experienced methods for treatments of Bennett fracture, and Chinese herbs have obvious symptomatic treatment effect and effectively improve the symptoms of patients. As the thumbs play a crucial role in the hand movement, the optimal treatment strategy for Bennett fractures has important clinical significance.

[Objective]To investigate the advantages, risks and kye points of minimally invasive total knee arthroplasty with subvastus approach. [Method] From April 2005 to December 2006, 204 primary total knee arthroplasties were performed, among them 146 cases with convention incision (CI), 58 cases with minimally invasive subvastus approach(MIS). All knees were implanted with the same prosthesis (NEXGEN-LPS, Zimmer).The anesthesia time,operation time, hospitalization time were recorded.The first walking time, walking distance, active knee range of motion, preoperative and postoperative HSS Score and the complications were compared. [Result] Totally 204 cases were followed up and the mean follow-up time was 22 months (range, 13-36 months). The difference of anesthesia time, length of incision, operation time, hospitalization time, walking time had significance between the CI and MIS groups ( u test, P0.05). The difference of active range of motion in 24 hours, 1 week, 2 weeks postoperation had significance between the two groups ( u test, P0.05).The difference of HSS score in 24 hours, 1 week, 2 weeks after operation had significance between the two groups ( u test, P0.05). [Conclusion] The minimally invasive total knee arthroplasty with subvastus approach reduces the quadriceps injury, offers early active knee motion and quickly recovery of knee function. However there is no significant difference in long-term walking distance, range of motion and HSS score.

[Objective]To explore the incidence, causes, training courses at high risk and location of the body of training injury in a special force corps, provide evidence for effective prevention of the injury.[Method]A questionnaire on training injuries and relative situations, and review of medical records from Nov 2005 to Oct 2006 were performed in 823 soldiers and officers in a special force corps at Nov 2006. Data were input into computers after quantization, and descriptive analysis was conducted with SPSS 13.0 software. [Result]Of 823 soldiers and officers, 738 (89.67%) experienced one or more injuries in that year, 525 (63.79%) were affected in normal training, 221 (26.85%) lost more than one training day due to the injuries. Confirmed with the medical records, 213 (25.90%) lost more than one training day due to injuries. A total of 1696 injuries occurred in 823 soldiers and offices in that year, of them, 1263 injuries interfered with normal training. Injury rate was 12.78 per 100 per month. 24.12% of injuries were due to over-exertion, 15.86% due to accident and 13.33% due to environmental field. Injury occurred mainly in runing related training courses including 5km running (22.17%) and 400m obstacle running (20.87%), followed by weight lifting (9.67%). The most frequent site of injury was the lower extremities, accounted for 65.74 % of the inj urie s including the foot ( 18.75 %),the ankle (13.50%), the leg (13.56%) and the knee (14.39%), followed by low back (14.21%). [Conclusion]Persistent over-exertion basic training, the courses at high risk of injury, should be improved in focus. Lower extremities and low back, the most frequent locations of injury, should be taken as key points of prevention and treatment of training injury.

Objective To evaluate the risk urodynamic factors of upper urinary tract deterioration in children with neurogenic bladder dysfunction secondary to myelodysplasia. Methods Urodynamic and imaging studies were performed in 32 children with myelodysplasia. Results 18 patients had ureterohydronephrosis and 4 of them had vesicoureteric reflux.Of 19 children with detrusor leak point pressure higher than 40 cmH 2O and bladder compliance less than 40ml/cmH 2O, upper tract deterioration was revealed in 17.In contrast,of 13 patients with detrusor leak point pressure less than 40 cmH 2O and bladder compliance higher than 40 ml/cmH 2O, only one had bilateral ureteral dilatation( P

Alkaloids ; Antineoplastic Agents, Phytogenic ; Chemical Phenomena ; Chemistry ; Harringtonines

OBJECTIVE To explore the effect of E-cadherin on the proliferation ability of Hep-2 by method of RNA interference technology to silence the expression of E-cadherin. METHODS The specific siRNA sequences and non-silencing siRNA were designed and synthesized. Hep-2 cells were transfected and then the down expression of E-cadherin gene in vitro cultured Hep-2 cells were got. The silencing effect of E-cadherin gene was explored by Fluorescence Quantitative Polymerase Chain Reaction and the proliferation of the transfected Hep-2 cells were detected in vitro by MTT assay. RESULTS 1.When transfected with the ratio of recombinant plasmid and the quality of liposome volume at 1:1, the transfection efficiency at the siRNA-3 group was the highest and can be up to 65%. 2.The results of Fluorescence Quantitative Polymerase Chain Reaction: recombinant plasmid pRNAT-U6.1/Neo-siRNA1, pRNAT-U6.1/Neo-siRNA2 and pRNAT-U6.1/Neo-siRNA3 can down regulate the expression of E-cadherin mRAN. Set blank control group as a baseline (set to 1), the changes of expression of E-cadherin relative to β-actin in siRNA-1group was 0.00092, siRNA-2 group was 0.00143, siRNA-3 group was 0.00045 and the negative control group was 3.44898. The difference was statistically significant (P<0.05). 3. MTT: The growth rate of Hep-2 cells treated by specific siRNA was faster than that of the control group, and the difference was statistically significant (P<0.05). CONCLUSION Effectively inhibition the expression of E-cadherin's mRAN can enhance the proliferation of Hep-2 cells.

BACKGROUND:Early knee ioint prosthesis is used to relieve severe pain of patients．With continuous modification，the knee joint prosthesis with high flexion has developed．OBJECTIVE：To compare the clinical outcome between fixed platform high—flexion prosthesis and rotating platform high-flexion prosthesis following total knee arthroplasty．DESIGN：Non-randomized concurrent control trial of patients．PARTICIPANTS：Thirty-four patients(50 knees)with severe osteoarthritis underwent total knee replacement in Department of Bone and Joint,Tianjin Union Medicine Center from January to December 2006．METHODS：Of 34 patients，16(25 knees)underwent fixed platform high-flexion prosthesis replacement(LPS flexion，Zimmer，USA)，and 18(25 knees)underwent rotating platform high-flexion prosthesis replacement(PFC sigma RPF prosthesis．Johnson & Johnson,USA)．MAIN OUTCOME MEASURES：Knee joint function was evaluated using Hospital for Special Surgery Knee Score (HSS)before and 2 weeks，1，3 and 6 months after surgery．In addition，range of flexion of the knee was observed at 6 months postoperatively．RESULTS：Thirty-four cases completed the treatment and were followed up for 6 months．HSS scores of patients undergoing rotating platform high-flexion prosthesis replacement were higher than fixed platform high·flexion prosthesis replacement group at 2 weeks postoperatively(P<0．05)，while no differences were found in HSS scores at 1，3 and 6 months after surgery(P>0．05)．In addition，there were no significant differences in the range of flexion of the knee at 6 months postoperatively[(130．4±15．2)°，(129．9±13．8)°，P>0．05]．CONCLUSION：Fixed platform and rotating platform high-flexion prosthesis replacement exhibit similar early effects on severe osteoarthritis．

ObjectiveTostudytheprotectiveeffectsofpreconditioningoncryopreservationinjuryofrat liver.MethodsThemodelofisolatednonrecirculatedperfusionratliver (IPRL)wasestablished .Thegrafts werepreconditionedwithischemia (IPC)anddexorubicin (DPC)respectively .ResultsThelevelsofaspartate transaminase (AST)andalaninetransaminase (ALT)inthesolutionsinIPCgroup (40 1? 6 3、17 1? 0 5 )U L andDPCgroup (43 6? 3 7、19 4? 0 8)U Lwerelowerthanthoseofnon preconditioning (NPC)group (6 4 5? 8 2、2 3 8? 3 96 )U L (P 0 0 5 ) .ConclusionsPreconditioninghasobviousprotectiveeffectsoncryopr eservationinjuryofratliver.MedicinepreconditioningmightimitatetheeffectofIPC .Medicinepreconditioning cansupplyclinicaltreatmentasasafeandeffectivepreconditioningmethod .

Objective To detail our early experience on a modified two-stage revison using articulating antibiotic-loaded cement spacer (AALCS) for late periprosthetic infection of total knee arthroplasty (TKA).Methods From January 2006 to February 2009,a series of 21 patients (21 knees) underwent twostage revision knee arthroplasty for late infected TKA.There were 8 males and 13 females,aged from 56 to 83 years (average,64.4 years).In the first stage,each patient underwent radical debridement,removal of all components and cement,and implantation of articulating cement spacer containing vancomycin.Graduated knee motion and partial weight bearing activity were encouraged in the interval period.Each patient received an individual systemic organism-sensitive antimicrobial therapy for 4.9 weeks (range,2-8 weeks) followed by a second-stage revision TKA.All the patients were regularly followed-up using the American Knee Society Scoring System.Results All patients were followed up for 17 to 54 months (average,32.2 months).At final follow-up,the knee society score,function score,pain score and range of motion (ROM) of knee were significantly improved compared with those before operation.Meanwhile,there was no significant increase in the degree of extension lag.The average interval period was 11.5 weeks (range,6-32 weeks).No change of bone defect volume was found between two stages.There were no complications such as recurrent infection,hepatic and renal dysfunction,and deep venous thrombosis.Conclusion Treating infected TKA with AALCS can avoid spacer-related bone loss,preserve knee function between two stages,and eradicate infection effectively without significant complications.The early clinical results are inspiring.Radical debridement,individual application of systemic antibiotics,and reasonable juncture for the second revision are all key factors related to a successful outcome.

Objective To investigate clinical significance of computed tomography (CT) scan in diagnosis of bronchial foreign body in children.Methods Twenty-one suspected children with bronchial foreign body were studied with spiral CT cross-section scan and coronal reconstruction and diagnosis was confirmed with bronchoscopy.Results The foreign body was displayed in all of 21 cases. CT scan showed foreign body was located in right main bronchial 12 cases, right middle bronchial 1 case, right inferior lobar bronchial 2 cases and left main bronchial 6 cases. Foreign bodies were extracted with bronchoscopy.Conclusion CT scan can display and locate accurately foreign body in bronchial of children,and has very important diagnostic value in patients having atypical histories, clinical and radiological findings.