BACKGROUND:There is always a controversy about nonsurgical and surgical repair of acute Achiles tendon rupture. Except retrospective analysis, there is a lack of high-level evidence-based medicine data.
OBJECTIVE:To systemicaly evaluate the clinical effectiveness of the nonsurgical versus surgical treatment for acute closed rupture of the Achiles tendon.
METHODS:The randomized controled trials about the nonsurgical versus surgical treatment for acute Achiles tendon rupture were searched in PubMed, EMbase, CBM, CNKI, Ovid, and WanFang Data by computer as wel as in relevant journals by hand, which were reported before February 2014. The Cochrane Library (Issue 1, 2014) was also retrieved. Two reviewers independently screened studies, extracted data, and evaluated the methodological quality according to the inclusion and exclusion criteria. Then Meta-analysis was conducted using RevMan 5.2 Software.
RESULTS AND CONCLUSION:Nine randomized controled trials were included, and totaly 874 patients were involved, 441 cases in the nonsurgical group and 433 in the surgical group. The results of Meta-analysis showed that compared with the surgical group, the incidence of complications was lower [OR=0.41, 95%CI(0.26, 0.63), P< 0.000 1], but the rate of tendon re-rupture [OR=2.86, 95%CI(1.62, 5.02),P=0.000 2] and incidence of cicatricial adhesion [OR=0.07, 95%CI(0.03, 0.19),P < 0.000 1] were higher in the nonsurgical group. However, there were no significant differences between the two groups in patient satisfaction, superficial infection, motion recovery, and deep infection. Compared with the surgical treatment, the nonsurgical treatment can reduce the incidence of complications, but has a higher incidence of re-rupture. Because of sample-size and methodological quality restrictions, this conclusion needs further verification of large-sample, multicenter, and high-quality randomized controled trials.

Objective To study the outcomes and problems of comprehensive medical pricing reform in Jiangsu.Methods The business operations,drug proportion and patient′s expenses of 28 pilot hospitals in 1 5 counties of the province before and after the reform were compared,to learn the impacts of the pricing reform on both hospitals and patients.Results Medical revenue and medical service quantity of these hospitals during this period(January to June)of 2012—2014 maintain a fast growth,with lower drug proportions,and patients′expenditure unchanged.Compared with data of the same period in 2012, the total revenue growth rates of the hospitals in 2013 and 2014 were 13.4% and 1 1.1% respectively;and their drug proportions were 44.9% and 42.3%;and the expenditure growth rates for outpatient/emergency service were 5.9% and 3.1% respectively.Conclusions The reform has achieved an initial success.However the pricing system,needs to be further rationalized to build a better price formation mechanism,in line with relevant reforms.

Objective Proximal humerus fracture is the most common upper-arm osteoporotic fracture in elderly patients and the result of treatment directly affects the physiological function of the shoulder .This article discusses the clinical effect of the locking proximal humeral plate ( LPHP) combined with anti-osteoporosis drugs in the treatment of osteoporotic comminuted proximal humerus fractures in elderly patients . Methods This study included of 47 elderly osteoporotic patients with comminuted proximal humerus fractures treated from April 2009 to March 2012 and with complete follow-up data.According to the Neer classification , the patients were divided into groups A (LPHP treatment, n=23, including 13 cases of three-part fractures and 10 cases of four-part fractures) and B (LPHP+anti-osteoporosis drugs, n=24, including 13 cases of three-part fractures and 11 cases of four-part fractures). Results All the patients were followed up for 14 to 38 (mean 23.6) months.The postoperative healing time was significantly shorter in group B than in group A ([96.57 ±2.59]d vs [115.91 ±2.73]d, P<0.05), and the excellence rate was remarkably higher in B than in A (91.7%vs 78.3%,P<0.05). Conclusion With the advantages of short healing time and high excellence rate , LPHP+anti-os-teoporosis drugs is superior to simple LPHP in the treatment of osteoporotic comminuted proximal humerus fractures in elderly patients.

BACKGROUND:A large number of studies have confirmed that anterior approach and posterior approach for multilevel cervical spondylotic myelopathy were effective, but there is stil no conclusion in which one is better.
OBJECTIVE:To systematical y assess the clinical effectiveness and safety of anterior approach versus posterior approach for multilevel cervical spondylotic myelopathy.
METHODS:The databases such as The Cochrane Library (Issue 3, 2013), PubMed (from 1966 to March 2013), OVID (from 1950 to March 2013), EMbase (from 1966 to March 2013), Chinese Biomedical Literature Database (from 1978 to March 2013), WanFang Database (from 1998 to March 2013), China National Knowledge Infrastructure (from 1999 to March 2013) were electronical y searched and five relevant journals were searched by hand to col ect the randomized control ed trials or non-randomized control ed trials about the clinical effectiveness and safety of anterior approach versus posterior approach for multilevel cervical spondylotic myelopathy. Two reviewers independently screened the literature according to the inclusive and exclusive criteria, extracted the data, and assessed the methodological quality of included studies. Then the meta-analysis was performed by using RevMan5.2 software.
RESULTS AND CONCLUSION:A total of 11 control ed trials involving 814 patients were included. Meta-analysis results showed that, compared with posterior approach, postoperative Japanese Orthopaedic Association scores were better (P<0.000 01), improvement rate of neurological function was higher (P=0.000 3), the incidence of C5 root palsy was lower (P=0.007), but operation time was longer (P<0.000 01), amount of intraoperative bleedin g was larger (P=0.000 7), incidence of adjacent segments degeneration was higher (P=0.01), incidence of postoperative complications was higher (P<0.000 01) and the rate of secondary surgical procedures was higher (P=0.003) after anterior approach. Additional y, there were no differences between the two groups in the cervical range of motion (P=0.56). For quantity limitation and low methodological quality of included studies, this conclusion stil needs to be further proved by performing more high-quality and large-scale randomized control ed trials.

BACKGROUND:There was no effective method to thoroughly treat tibial bone defect and soft tissue defect. The application of Ilizarov technique solved shortening deformity, soft tissue injury and joint contracture to some degrees.
OBJECTIVE:To discuss the effects of Ilizarov external fixation on treatment of tibial bone defect and the parameter selection of Ilizarov steel ring.
METHODS:We retrospectively analyzed the clinical data of 67 patients with tibial bone defects, who were treated and fol owed up from March 2007 to January 2012. Al patients had fracture of tibia and received one-stage operation. After treatment, postoperative limb suffered from tibia osteomyelitis and soft tissue injury. Ilizarov external fixation was placed in the limb. The length of defected tibia and area of defected soft tissues were compared at 1, 3 and 6 months after external fixation and final fol ow-up. The ankle joint Kofoed score and knee joint ROM score were observed before and after external fixation. In final fol ow-up, functional recovery was evaluated in accordance with diagnosis and treatment criteria of Johner-Wruhs fracture of shaft of tibia.
RESULTS AND CONCLUSION:A total of 67 patients were fol owed up for 6 to 35 months. Bone defects in 67 cases were rebuilt and the fracture was healed, but five cases had poor healing. Among 44 cases of soft tissue injury, wound had healed in 40 cases, and wound had not healed in 4 cases. The length of tibia defect and the area of soft tissue defects were improved at 1, 3, and 6 months after the operation (P<0.05). After operation, the ankle joint Kofoed score and knee joint ROM were significantly better than those before operation (P<0.05). During final fol ow-up, the excellent and good rate of each therapeutic plan was 85%. For the tibial osteomyelitis bone defect with the merged skin defect, the trauma was smal using Ilizarov technique, which can avoid several complicated operations, shorten the time and reduce the expenses of treatment, but there were some weaknesses and limitations. The size and material of Ilizarov external fixation affect the efficiency of the fixation and postfixation adjustment.

The pharmacokinetics of thyrotropirrreleasing hormone (TRH) made in China was studied in rabbits. TRH concentrations in plasma, urine and various tissues were measured by RIA. After intravenous injection of TRH, the plasma concentration-time curve was shown to fit a two compartment open model with the following pharmacokinetic parameters: 0.8 mg/kg, T1/2?=0.551 min, T1/2? = 9.374 mm, VI = 3.018 ml/kg, Vb = 22.659 ml/kg and AUC = 0.479g. L-1. m-1; 2.0mg/kg, T1/2? = 0.629 mm, T1/2?= 9.734 min, VI = 5.135 ml/kg, Vt = 28.848 ml/kg, and AUC = 0.962g. L-1. m-1; 5.0mg/kg, T1/2? =0.720 min, T1/2?= 10.738 min, VI = 6.120 ml/kg, Vb = 31.928 ml/kg and AUC=2.540 g. L-1. m-1. TRH was distributed widely in tissues and concentrated mainly in the kidney and pituitary. TRH was eliminated partly by the kidney and 21.9% was excreted within 2h after intravenous injection.

MiRNAs represent a class of short endogenous non-coding RNAs regulating gene expression at mRNA post-transcriptional level in many biological processes,including differentiation,proliferation,development and apoptosis.The deregulation of miRNA expression is believed to be an important regulator of tumor development.Increasing evidence has revealed the abnormal expression of miRNA in papillary thyroid carcinoma,indicating the important role in PTC invasion mechanism,clinical diagnostic value,efficacy evaluation,recurrence monitoring and prognosis judgement.

Objective To investigate a new way to detect filarial larvae in mosquitoes and apply it to the surveillance of filariasis. Methods An oligonucleotide probe that was species-specific to W. malayi was synthesized and marked with 32 P using molecular biological technique. Then the probe was tested with dot hybridization in detection of W. malayi filarial larvae from mosquitoes. Results The minimal detectable limit was found to be 2ng DNA of filarial larvae or microfilaria (Mf.), with no cross reaction with other animal filariae. A single larva can be detected when infected mosquitoes were tested one by one. One infected mosquito can be detected from a group of 20 mosquitoes tested together.Conclusions Our probe is sensitive and specific. It is practical to apply our probe to mosquito surveillance in Brug's filariasis endemic areas.

BACKGROUND:The surgical method for the treatment of unstable distal radius fracture mainly includes plate internal fixation and external fixator, but both of these two methods have the advantages and disadvantages. Which treatment is more conducive to the rehabilitation of patients, there is stil controversy.
OBJECTIVE:To evaluate the clinical effectiveness of internal fixation and external fixator for the treatment of unstable distal radius fractures.
METHODS:The relative databases and literatures were searched with the computer and hand to col ect the randomized control ed trials of internal fixation versus external fixator for the treatment of unstable distal radius fractures. After extraction literature data and quality evaluation, RevMan 5.2 software was used for system evaluation. The grip strength, disabilities of arm, shoulder&hand score, complications rates, infection rates, deformity rates and ulnar variance rates were compared between two groups.
RESULTS AND CONCLUSION:A total of 9 literatures, involving total y 524 patients were included, 286 patients in the internal fixation group and 238 patients in the external fixator group. There was no significant difference in grip strength between internal fixation group and the external fixator group. The results of Meta-analysis showed that the internal fixation group was better than the external fixator group in the aspects of disabilities of arm, shoulder&hand score, complications rate, infection rate, deformity rate and ulnar variance rate at 3 months and 1 year after treatment. The results indicate that the plate internal fixation is better than external fixator in the treatment of unstable distal radius fractures, but the large sample, double-blind, and high quality randomized control ed trials are stil needed to identify the results.

Objective To explore the feasibility and reliability of ultrasonic monitoring of portal vein (PV) and hepatic vein (HV) blood flow volume changes in the process of induced carcinogenesis of hepatocellular carcinoma and the correlation of PV/HV blood flow volume ratio (Qpv/Qhv) with the severity of liver cirrhosis. Methods SD rats with diethylnitrosamine-induced liver carcinogenesis underwent regular liver ultrasound examinations including color flow imaging and pulsed Doppler examination. The main PV and HV blood flow parameters were measured to calculate Qpv/Qhv until successful induction of liver cancer. Results The PV diameter increased significantly with the severity of liver cirrhosis in the rats (P<0.05), and the PV blood flow velocity reduced but the blood flow volume increased significantly in liver cancer and cirrhosis stages (P<0.05). Normal hepatic vein blood flow was significantly greater than that measured in liver cirrhosis and hepatocellular carcinoma stages. The Qpv/Qhv measured in normal rats was significantly lower than that in liver cirrhosis and liver cancer stages, but the ratios were comparable between the latter two stages. Conclusion Ultrasonography is reliable to monitor the change of liver hemodynamics in rats with induced liver carcinogenesis, in which the changes of Qpv/Qhv are correlated with the severity of liver cirrhosis.