Objective To identify the relationship of the femoral morphology with the sex and age, analyze and compare the two methods of defining the morphology of marrow cavity.Methods AP and lateral radiography of the hip joint was made in 45 patiens who accepted total hip arthroplasty.The anatomic parameters of the proximal femur were measured on those radiography.The femoral morphology was analyzed using Dorr criteria and Noble class respectively.Results (1)The anatomic parameters of the proximal femur were not correlated with the age in male.(2)The inner diameter of canal 10 em distal to the lesser trochanter, isthmus width and canal to calar isthmus rate were positively correlated with age in female.(3)The medial cortical and lateral cortical thickness 10 cm distal to the lesser trochanter,cortical index and canal-flare index were negatively correlated with age in female.(4)According to Dorr criteria,13 femora were classified as type A,20 as type B,and 12 as type C.According to Noble class,4 femora were classified as champagne type,34 as normal type,and 7 as stove pipe type.Conclusions The femoral morphology don't change with age in male.The width of femoral canal increase with age in female.Type C of Dorr criteria contains all of stove pipe type and a portion of normal type.

Objective To compare the outcome of proximal femoral nail anti-rotation (PFNA)versus anatomical locking plate (ALP) in treatment of unstable intertrochanteric fracture.Methods The study included 89 patients who had received PFNA fixation (PFNA group,n =45) or ALP fixation (ALP group,n =44) for unstable intertrochanteric fracture between February 2008 and September 2009.Operation time,amount of bleeding,drainage volume,postoperative complications,fracture healing time and hip joint score after fracture healing were compared between two groups.Results Mean operation time in PFNA group was obviously shorter than that in ALP group (61.4 minutes vs 114.8 minutes,P ＜0.01).Mean amount of bleeding and drainage volume were significantly lower in PFNA group than in ALPgroup (119.3 mlvs 136.8ml,P＜0.01; 74.9mlvs80.3 ml,P＜0.01).While,PFNA group was not significantly different from ALP group with regard to average fracture healing time and Harris hip joint score after fracture healing (4 months vs 4.1 months,P ＞ 0.05; 91.2 points vs 89.8 points,P ＞0.05).Two patients had poor fracture reduction in PFNA group,but all patients had good fracture reduction in ALP group.No obvious adverse postoperative complications occurred in PFNA group,but one patient had fracture nonunion in ALP group.Conclusions PFNA and ALP fixation of unstable intertrochanteric fracture present insignificant differences in fracture healing time,postoperative complications and hip joint function after fracture healing.Whereas,PFNA is more suitable for the elder patients on account of shorter operation time and less intraoperative bleeding.

Objective To observe the expression level of stromal cell-derived factor-1 (SDF-1) in bone marrow stromal cells of acute leukemia at initial diagnosis and complete remission. Method Bone marrow stromal cells were isolated and cultured from five patients of acute leukemia at the time of initial diagnosis (Group A), five patients of acute leukemia at complete remission (Group B), and five healthy individuals or persons with no serious hematopathy (Group C). The content of SDF-1 protein in cultured supernatants was determined with enzyme-linked immunosorbent assay (ELISA). Results The contents of SDF-1 protein in supernatants of groups A, B and C were 2 941?374, 2 891?305 and 1 583?157pg/ml, respectively. The contents in both group A and group B were significantly higher than that in group C. Conclusion The SDF-1 expression level in acute leukemia bone marrow stromal cells was elevated at initial diagnosis, and the abnormality persisted until the stage of complete remission.

Objective To summarize the early results of total hip replacement with a proximally hydroxyapatite-coated femoral component. Methods From February 2000 to October 2003, 65 cases (70 hips) underwent uncemented total hip replacement with a proximally hydroxyapatite-coated femoral component (U2, United Orthopedic Corporation, Taiwan, China). The diagnosis included femoral neck fractures in 30 cases, osteoarthritis in 15 cases, avascular necrosis of the femoral head in 9 cases, loosening of artificial femoral head in 8 cases, rheumatoid arthritis in 2 cases, and arthrodesis in 1 case. Clinical and radiographic evaluations were performed at 1 week, 3 and 6 months postoperatively, and yearly afterwards. Bone mineral density (BMD) of the proximal femur was measured with dual-energy X-ray Absorptiometry (DEXA) for 44 cases. Results Postoperative X-ray films showed that the initial fixation was excellent or good in all the stems. The follow-ups averaged 3 years (2 to 5.5 years). The mean preoperative Harris hip score was 32 (25 to 52) points, which were improved to 96 points at the latest follow-ups. There was no reported incidence of thigh pain at any time throughout our study. And no case needed revision. By the measurements on the X-ray films taken within 1 year postoperatively, 7 of the 70 stems had subsidence of less than 1.5 mm. No hip experienced extensive proximal end osteolysis, intramedullary osteolysis, or loosening. DEXA showed that the BMD values decreased after operation, and then returned rapidly to the normal or near normal ones 3 to 6 months after operation, especially in zones Ⅱand Ⅵwhere the increase was even more significant than at the control side. All the stems were radiographically stable with evidence of osseous ingrowth typically seen in HA-coated zones, according to the criteria proposed by Engh et al. Conclusions Since HA-coating on femoral implants can enhance the initial fixation of implants, accelerate bone ingrowth and osseous fixation of the femoral component, and seal the interface between the implant and bone to prevent ingress of polyethylene particles, it is helpful in improving clinical results of the cementless total hip replacement.

Objective To investigate the medium-term efficacy of total hip replacement with CFP handle prosthesis.Methods Thirty-two patients (34 hips) undergoing total hip replacement with CFP handle prosthesis were selected.The preoperative diagnosis was:femoral neck fracture in 6 cases,femoral head necrosis in 12 cases,osteoarthritis in 10 cases,ankylosing spondylitis in 3 cases,and pigmentation villi nodular synovitis in 1 case.Ten days,1 month,6 months,and 1 year (a year later) after surgery,the hip joint function and X ray film performance were followed up.Results There was no complication such as infect and injury of blood vessel and nerve.Postoperative X ray film showed the femoral handle prosthesis position was good.The average Harris hip score was 32.6 (20-53) scores before surgery,and back to 95.3(90-100) scores after surgery,no patients needed revision surgery.Postoperative Engh score was above 10 scores after half a year.Conclusion The medium-term efficacy of total hip replacement with CFP handle prosthesis is good,and can be used as one of the choice of primary total hip replacement.

Objective To evaluate the apical sealing ability of iRoot SP root canal sealer in oval-root canal. Methods After root canals were instrumented by Mtwo, 28 premolars with oval-root canal were randomly divided into 2 groups, 14 teeth in each. The root canals were obturated with AH Plus (group A) and iRoot SP (group B) by modified continuous wave condensation technique. The apical leakage was evaluated by dye penetration method and transparent teeth technique. Results Mean depth of leakage was (0.92 ± 0.26) mm for group A and (0.84 ± 0.40) mm for group B. There was no significant difference between the two groups (t=0.506, P > 0.05). Conclusion The apical sealing ability of iRoot SP is equivalent to AH Plus in oval-root canal.

Objective To evaluate the effects of pegylated interferon plus ribavirin on naive and retreated chronic hepatitis C (CHC) patients.Methods A total of 67 CHC patients were divided into naive group (n =35) and retreat group (n =32) based on their treatment history.And their virological responses [rapid virological response (RVR),early virological response (EVR),virological response to etravirine (ETR) and sustained virological response (SVR)] and risk factors were analyzed.Results ①RVR and EVR of naive group were 60％ (n =21) and 77％ (n =27),respectively,and the retreat group were 28％ (n =9),53％ (n =17).The differences between the two groups were significant (both P ＜ 0.05).On the contrary,CHC patients in both groups might achieve similar ETR and SVR rates (P ＞ 0.05) ; ② The relapse rate in the retreat group was higher than that in the naive group (22％ vs.10％).But the differences had no statistical significance (P ＞ 0.05) ; ③ CHC patients in the retreat group could achieve similar responses,including RVR,EVR,ETR and SVR (P ＞ 0.05) whether treated previously with standard interferon or pegylated interferon; ④ According to muhivariable logistic regression analysis,the retreated genotype 1 CHC patients has a lower SVR rate compared with naive genotype non-1 counterparts (OR =0.29 and 0.26,all P ＜ 0.05).Conclusions CHC patients in the naive group could achieve higher virological responses and a lower relapse rate compared to those in the retreat group.The previous treatment regimeu has no significant effect on virological responses of CHC patients retreated with Peg-IFN plus ribavirin.Genotype 1 and retreatment are both risk factors of achieving SVR.

Objective To observe the protective effect of Xiaohuangdecotion against liver damage inα-naphthylisothiocyanate (ANIT)- induced cholestasis in rats and probe the potential mechanisms.Methods Male Wistar rats (40) were randomly divided into a normal group, a model group, aXiaohuangdecotion treatment group, and a UDCA control group (10 for each). Except for rats in the normal group, ANIT solution (6 ml/kg) was administered in other rats by gavages for cholestasis model. After ANIT treated 48 h, rats inXiaohuangdecotion group and UDCA group were treated withXiaohuangdecotion (1.73 g/kg) and UDCA (10 mg/kg) respectively for 1 week. And, rats in the normal group and the model group were given an equal volume of saline. At the end of the experiment, liver function rats were examined. Liver histology was examined by HE staining, and CD68 factor was tested by immunohistochemistry and Western blot.Results Compared with the model group, the content of ALT (164.6 ± 53.4 U/Lvs. 208.4 ± 28.5 U/L), AST (247.6 ± 76.1 U/Lvs. 341.8 ± 32.8 U/L), ALP (601.0 ± 101.1 U/Lvs. 720.6 ± 123.3 U/L), TBiL (96.5 ± 18.1μmol/Lvs. 149.6 ± 30.2μmol/L), DBiL (73.7 ± 16.6μmol/Lvs. 140.3 ± 28.6μmol/L) and TBA (93.4 ± 13.0μmol/Lvs. 146.5 ± 38.9μmol/L) were significantly reduced in the treatment group (P<0.01 orP<0.05). Compared with the model group, CD68 level (7.08 ± 0.19 vs. 17.42 ± 0.48)were significantly reduced by intervention ofXiaohuangdecotion (P<0.01).ConclusionsXiaohuangdecotion could improve liver functions and reduce CD68 expression, leading to a good hepatoprotective and jaundice-relieving effects.

Objective To evaluate the relationship between long non-coding RNAs (LncRNA) in tumor tissues and clinico-pathological features of hepatocllular carcinoma (HCC).Methods Using hepatocellular carcinoma gene database GSE36376,we conducted a study on eight LncRNAs which are associated with liver diseases and analyzed the correlation between these LncRNAs and HCC clinico-pathological characteristics.We also evaluated the potential effect of LncRNAs on HCC development.Results H19 was overexpressed in non-tumorous tissues of HCC (P ＜ 0.05),while MEG3,HOXA13,KCNQ1OT1 were all upregulated in tumorous tissues (all P ＜ 0.05).HULC level in HCC tumorous tissues was negatively correlated with AJCC staging,BCLC staging and tumor size (all P ＜ 0.05).UCA1 was positively correlated with BCLC staging (r =0.135,P ＜ 0.05).Univariate analysis and multivariate logistic analyses showed that UCA1 was a risk factor of intrahepatic metastasis of HCC (OR =6.054,95％ CI =1.429 ～ 25.642,P ＜ 0.05); in contrast,HULC overexpression in tumorous tissues played a positive role in HCC tumor size (OR=0.805,95％CI=0.678 ～0.956,P＜0.05).Conclusion HULC in tumorous tissues suppressed HCC proliferation,while UCA1 was a risk factor of HCC aggressiveness.

Objective To study the expression of intercellular adhesion molecule-1 (ICAM-1 ) in the rat cardiac heterotopic allo- grafts and the effect of cyclosporin A on prevention of allograft rejection. Methods Heart transplantated animals were divided into three groups: Group Ⅰ(control), Group Ⅱ(CsA 7. 5mg/kg B W, daily) and Group Ⅲ(CsA l5mg/kg B W, daily). Acute cardiac rejection grade was valued by the standrd of ISHLT(1990 ). Immunohistochemistry was performed to analyze the expression of ICAM-1 in heart grafts and donor aorta segments. Results After heart transplantation, it was found that from day 1 to 3, there was sligtly inflammatory infiltratiation, the rejection was graded 1A of 1B, But from day 11 to 12, there were disseminated inflammation and cardiac necrosis with serous hyperemia, exutation, edema, acute vasculitis and myocarditis. The rejection grade was 3B or 4, and could be reduced 1to 2. 5 grades by administration of CsA. It was also found that both in heart graft and donor aorta segments the expression of ICAM-1 on the endothelium cells, infiltrated lymphocytes was clearly increased. It was time-dependent and could be down-regulated by administra- tion of CsA. On Day 1 and Day 3 the suppressing function of CsA on expressing of ICAM-1 showed singificant dosage-dependent. But from Day 7 to Day 11, it appeared dosage- independent. Conclusiou Trea tment with CsA is an effect ive methed to down- regulate I - CAM-1 expression and could reduce the lympphocyte migration and filtration. These results may explain, in part, the mechanism of CsA reducing acute rejection in a rat cardiac transplantation medel.