Recent years,the rapid development of manufacturing process for ceramic materials improves wear performance,biocompatibility,scratch resistance,no ion release property,wettability,and reduces friction.This makes ceramics become one of the most significant achievements in total hip arthroplasty.Ceramic-on-ceramic prosthesis seems to be one of the best choices for young and active patients.

[Objective] To investigate the effect of one-stage bilateral hip replacement in the treatment of late stage of hip joint ankylosis.[Methods]Ninteen patients(38 hips)with hip ankylosis were taken as research samples.Patients underwent biologically total hip replacement with posterolateral incision and acetabular plastic repair after second osteotomy.The ankle between acetabulum and femoral body was modulated according to the pre-operative deformation.A larger artificial prosthesis was installed.Early functional exercises were taken after operation.[Results]All cases were given a mean follow-up of 5.5 years(1~8 yrs).Dislocation was found in 2 cases and recovered after manual reduction.Slight fissure fractures were found in 2 hips and no special management was given.Slight heterotopic ossification was found in 6 hips,with grade Ⅰ in 3 hips,grade Ⅱ in 3 hips according to Brooker Classification.No obvious functional influence was found.The flexion-extension range increased from 0? pre-operation to average 81?(65?~115?)and the mean moving range reached 160?(110?~230?).[Conclusion]Bilateral hip replacement is a good method to reconstruct the hip function,promote the living standard.Artificial joint damage in the traditional two stage operations was avoided.It also has advantages of less medical expenses for patients and less pain after surgery.Functional exercises could be started earlier.It is a satisfactory method for the treatment of hip joint ankylosis.

[Objective] To evaluate the treatment with total hip arthroplasty(THA)using Zweym?ller system for short females with Crowe-Ⅲ and Ⅳ developmental dysplasia hip(DDH).[Method]From January 2004 to December 2006,thirteen THA procedures were performed in 12 female patients with 13 hips.The age of the patients was from 28 to 62 years old(average 51 years).The height was from 1.48 to 1.55 meters.Based on Crowe classification,8 patients with 9 hips were type-Ⅲ,and 4 patients with 4 hips were type-Ⅳ.before surgery,the discrepancy of lower limbs was from 3 cm to 5 cm.All patieds had severe hip pain and dysfunction.The Harris hip score ranged from 35 to 64 points with 40 points on the average.In all procedures the soft tissue was released entirely,the acetabular component was placed in the true acetabulum without femoral osteotomy.[Result]After operation,the legs lengthened from 2 to 5 cm.During the follow-up of 12 to 36 months(average 24 months),no femoral fracture,femoral or sciatic nerve palsy or loosening was detected except one dislocation according to clinical outcomes and X-ray findings.The Harris score was improved from 60 to 95.There was significant difference between before and after operation(P

[Objective]To describe a new way of arthroscopic posterior cruciate ligament reconstruction and evaluate the early stage of follow up results.[Method]Twenty four consecutive cases of isolated and combined posterior cruciate ligament deficiency were studied.Quadriceps tendon patellar bone was used for preparation of "Y" shaped autograft.Double-tunnel of femur were drilled and tibia was inlayed at their anatomical footprint.[Result]All cases were followed up for 24 months to 30months,averaging 24.5 months.Lysholm rating scales were used to make clinical subjective evaluations.Lysholm scores raised from 49.20?1.44 before operation to 87.91?1.52 after operation.Finial Lysholm evaluation showed 7 patients were excellent,16 good,and 1 poor.The good to excellent rate was 95.8%.Anteroposterior translation as clinical objective evaluations was measured with KT-1000.KT1000 arthrometer measurement showed that the average posterior translation improved from 12.85?1.10mm preoperatively to 3.98?1.99mm postoperatively.One patient was graded as failure.[Conclusion]Arthrosopy assisted prodedure of double bundle posterior cruciate ligament reconsruction using quadriceps tendon patellar bone autograft by double-tunnel of femur and inlaying of tibia is effective and reproducible.The short follow up clinical results are encouraging.

[Objective]To evaluate the clinical effect of the plastic splint on treatment of Colles fracture.[Method]A total of 105 patients with Colles fracture were collected between September 2002 and August 2008.All patients were perfromed using the plastic splint afrer diaplasis.According to Gartland and Werley scoring syste,the function of wrist was evaluated after 3 months.[Result]There are only 2 cases losing during treatment,103 cases were finished.The average excellent to good case was 90.3%,including 80 cases of being excellent,13 of being good,7 of being fair and 3 of being poor.[Conclusion]The plastic splint is exactly effective to treatment Colles fracture,especially,it could effectively relieve swelling and improve the contour of the wrists.Theses all rely on reasonable biomechanics design.

Objective To evaluate the inhibitory effect of rofecoxib in human gastric carcinoma tissues established in nude mice by orthotopic transplantation through the expressions of vascular endothelial growth factor (VEGF) and inducible nitric oxide synthase (iNOS). Methods After the models of human gastric carcinoma in nude mice by orthotopic transplantation were established, rofecoxib was administered intragastrically. The expressions of VEGF and iNOS were evaluated in the local tumors by Envision immunohistochemical method. Results The expression of VEGF protein in isotonic saline group, rofecoxib group and combination group were 81.25%, 61.25%, and 35.00% respectively.There was significant difference between rofecoxib group and isotonic saline group, and so was rofecoxib group and combination group (P

Objective To investigate the effects of hedysarum polybotys saccharide (HPS) on lipid metabolism and the expression of stearoyl-CoA desaturase-1(SCD-1) gene in rats with non-alcoholic fatty liver disease (NAFLD). To discuss the interfering effects of HPS on NAFLD. Methods The SD rats were randomly divided into the blank control group and the experiment group. Rats in the experiment group were fed with lipid rich food for 8 weeks to establish model and were randomly divided into model group, drug positive group and HPS group. After 8 weeks of drug intervention, the level of ALT, AST, TC, TG, HDL-c and LDL-c were measured with automatic chemistry analyzer, and expression of SCD-1 gene was measured by semi-quantitative polymerase chain reaction.Results Compared with blank control group, serum ALT, AST and TC, TG, LDL-c of model group were higher (P<0.05,P<0.01), the level of HDL-c of model group and the expression of SCD-1 gene were lower (P<0.01). Compared with model group, HPS was useful to decrease serum ALT, AST, LDL-c, TC and TG (P<0.05,P<0.01), and increase the level of HDL-c (P<0.01) and the expression of SCD-1 gene (P<0.01).ConclusionHPS had a positive effect on regulating lipid metabolic disturbance of NAFLD rats and promoting the expression of regulatory gene SCD-1.

Objective:To analyze the key projects in medical imaging and biomedical engineering area funded by national natural science foundation of China (NSFC) in the past ten years, so as to provide reference of application for scientific researchers.Methods:The funded projects through fund code H18 (medical imaging and biomedical engineering) of NSFC during 2010 to 2019 was analyzed. The funded fields, geographical distribution, research direction, applicants, supporting institutions, and the characteristics and trends of key researches were summarized.Results:A total of 68 projects were funded under H18, including 58 in projected area and 10 in non-projected area. The average funding rate was 19.0% (68/358) in the last ten years. Institutions of higher learning received 51 grants while scientific research institutes had 17. Thirty-seven supporting institutions received H18 key project funding, among which 22 received 1 grant and 15 received 2 or more. There were 51 (75%) male project leaders and 17 (25%) female leaders. The age of project leaders ranged from 35-66 years. Among the project leaders of H18 key funded projects, 52 leaders were approved once, and 8 were approved twice. The average interval between two approved key projects was 5.8 years.Conclusions:Since the establishment of the Department of Health Sciences in 2009, the sum of the fund and the number of the funded key projects in imaging medicine and biomedical engineering field have increased year by year. With the joint efforts of the majority of clinical workers and scientific researchers, research in this domain will achieve rapid development in our country.

BACKGROUND: Patients with hip instability due to cerebral palsy, hemiplegia, infantile paralysis and extensive damage in gluteus medius, appear with high dislocation rate after arthroplasty, which is a great challenge for clinicians.OBJECTIVE: To investigate the reconstruction of the hip joint stability with the dual-mobility acetabular cup, and to prevent the dislocation after replacement in patients with hip neuromuscular lesions.METHODS: Twelve cases of hemiplegia, infantile paralysis, developmental dysplasia of the hip and recurrent dislocation after hip arthroplasty admitted in the Orthopedic Treatment Center, the Second Affiliated Hospital of Henan University of Chinese Medicine from January 2010 to July 2014 were enrolled, then underwent joint replacement or revision with dual-mobility cup, and the dynamic stability of the hip was achieved by adjusting the abductor lever arm.RESULTS AND CONCLUSION: (1) The followed-up time was from 20 to 60 months. (2) One year later, one case suffered Vancouver A right femoral fracture and received conservative treatment at 1 year postoperatively; one case of dislocation at postoperative 1 week, and dislocation, infection and loosening occurred in none cases. (3) These results manifest that those patients with neuromuscular disease and hip instability treated with hip joint arthroplasty using dual-mobility acetabular cup can reconstruct the stability of the hip joint and prevent the occurrence of postoperative dislocation.

Objective:To determine phenolphthalein illegally added into diet health products by Raman spectroscopy. Methods:Raman spectroscopy was used to determine phenolphthalein added into diet health products. The diet health products were extracted by suitable solvents, and then the extracting solution was measured by Raman spectroscopy. Results: A calibration curve was built and the analysis was performed on the samples with phenolphthalein at different concentrations. The results were accordance with the real added amount. Conclusion:With simple sample preprocessing method, Raman spectroscopy can be used in the fast detection of phe-nolphthalein illegally added into diet health products. The method is fast and simple with low cost, and can provide both qualitative and quantitative results. The detection limit is 1% for phenolphthalein in diet health products.