Objective To evaluate the effects of Burch-Schneider(BS) acetabular reinforcement ring applied in primary or revision total hip arthroplasties in 9 patients with combined or cavitary acetabular bone defects. Methods A retrospective follow up that averaged 3.8 years was performed with a special scoring system comprising the patients symptoms, signs and function. Results The excellent and good function were achieved in 89% of all cases. Conclusion 1)BS reinforcement ring could be effectively and reliably applied in primary or revision total hip arthroplasty or in patients with severe acetabular bone defects. 2)BS reinforcement ring shows the biological fixation feature, so as to provide good foundation for long-term satisfactory function of hip. 3)The lower ear of BS ring need not to be fixed to ischium with screws as usual, but be inserted in obturator foramen above transverse ligament, thus imparting some elastic resilience to it. 4)The upper ear should be folded through such a curve that its curvature was in compliance with that of ilium, which would be better performed in one session. 5)The appropriate amount of 0.8 cm?0.8 cm?0.8 cm morcellized allografting bone was used to snugly fill the space, which would be conducive to desirable incorporation between prosthesis and bone, and the authors propose that the patients should be allowed weight-bearing earlier.

Objective To describe the retroperitoneal laparoscopy-assisted Anderson-Hynes dismembered pyeloplasty with small incision for the treatment of ureteropelvic junction obstruction (UPJO) and to evaluate its clinical effect. Methods Twelve cases of UPJO (8 men and 4 women;age range,5-48 years) underwent retroperitoneal laparoscopy-assisted, small incision,dismembered pyeloplasty.Of them,4 cases had severe hydronephrosis;6,intermediate;and 2,mild by B-ultrasound and urography.Nine cases had good IVU imaging and 3 had poor IVU imaging. Results All the procedures were successful.The operative time was 100-180 min (mean,127 min);the blood loss was 30-100 ml(mean,70 ml) and the postoperative hospitalization was 5-8 d (mean,5.6 d).No perioperative complication occurred.Follow-up of 3-12 months by intravenous urography and B-ultrasound showed no stricture at UPJ,and hydronephrosis was remitted and renal functions were improved. Conclusions Retroperitoneal laparoscopy-assisted Anderson-Hynes dismembered pyeloplasty with small incision is a feasible,minimally invasive and effective way to treat UPJO with less morbidity and shorter convalescence.

Objective To study the methods and effects by using thrombolytic catheter in interventional treatment for patients with acute lower limb arterial thrombosis or embolism. Methods One hundred and twelve patients suffered acute lower limb arterial thrombosis or embolism. There were 85 cases of acute lower limb arterial embolism induced by atrial fibrillation in coronary or rheumatic heart disease,other 27 cases of arterial thrombosis caused by different reasons. Interventional treatment by inlying thrombolytic catheter was applied and continuous perfusion was received locally in all patients. Results Complete recanalization was got in 77 cases (68.8%) of 112 cases. Partial re canalization was got in 23 cases (20.5%), and ischemia limbs were saved in spite of chronic limb ischemia(chronic spasmodic limb) occurring in the later follow-up. Nine cases (8.0%) were amputated as a result of irreversible limbs necrosis, 3 cases (2.7%) died from acute renal failure resulting from reperfusion injury or recurrent cerebral embolism.Conclusion Interventional treatment by inlying thrombolytic catheter is a safe and effective method with lower amputation rate for acute lower limb arterial thrombosis or embolism in patients.

Objective To create a new animal model which can preferably simulate the human's scoliosis. Methods Forty-five 4-week-old female Wistar rats were randomly divided into 3 groups. Group 1 underwent subcutaneous left scapula-to-contralateral ilium tethering procedure with a non-absorbable suture,which made the spine convex towards right side, and then removed forelimbs and tails of rats to create the bipedal rats. Tethering sutures were cut at postoperative 8th week, and the spines of rats were then observed during 2 weeks. Group 2 were the same as group 1 but in which scapula-to-ipsilateral ilium tethering procedure was performed. Group 3 were the same as group 1 except that the bipedal rats were not created. All postoperative rats were fed separately in special high cages for group 1 and group 2 or in standard cages for group 3. Operative duration, postoperative first food-taking duration, operative mortality, body weight, relative length of the spinal cord, Cobb angles in the coronal and sagittal planes, modeling mortality, the incidences of re-operation, scoliosis and vertebral rotation among the 3 groups were compared. Results There were no significant differences in the degree of scoliosis or kyphosis among the 3 groups at the time of initial tethering. At 2 weeks after tether release, the incidence of vertebral rotation was significantly higher in group 1 than group 2 (86.7% vs. 33.3%), and the degree of scoliosis or kyphosis was significantly larger in group 1 than group 3 (coronal plane: 30.2°±10.4° vs. 20.5°±7.7°; sagittal plane: 55.6°±10.0° vs. 43.8°±6.3°). There was no significant difference in postoperative first food-taking duration among the 3 groups, and no death of rats occurred in all groups during intraoperative and postoperative 6 hours, although operative duration was significantly longer in group 1 or group 2 than group 3. There were no significant differences in body weight,relative length of the spinal cord, modeling mortality, the incidences of re-operation and scoliosis among the 3 groups. Conclusion The bevel and axial loads of the vertebrae can significantly enhance the incidence of vertebral rotation and the degree of kyphoscoliosis, respectively. The scoliosis model created by scapula-to-contralateral ilium tethering procedure in bipedal rats can preferably simulate the human's scoliosis.

Objective To assess the feasibility of applying intensity-modulated radiotherapy(IMRT)simultaneous integrated boost(SIB)to replace conventional radiotherapy(CR)plus brachytherapy of whole pelvis in locally advanced cervical eaneer(LACC).Methods Five LACC patients based difference position of uterus were chosen and worked out CR and IMRT SIB plans respectively.Dose distributions were compared between IMRT SIB and CR.Results When uterus was in ante-,neutral-,retro-pnsition and deviation respectively,IMRT SIB could provide enough and homogeneous dose distribution for target volume and reduce irradiated volumes and doses for organs at risk(recta,bladder and small intestine)than CR.The doses of the A,B,and fundus of uterus were higher in IMRT SIB than CR.However,in ease of small intestine was close to or encircled the uterus,the targets volume dose would be inadequacy.Conclusions LACC IMRT SIB's dose distribution is better than CR(except excess ante-position)and may help to treat those patients who couldn't be suitable with brachytherapy.

Objective To observe the feasibility of laryngeal mask ventilation general anesthesia com- bined epidural block in laparoseopie eholecystectomy. Methods One hundred and forty eases of selective laparoscopie eholecystectomy were performed to T8～T9 gap catheterization, with 1.5 percent lidoeaine epi- dural block, block levels in the following T4. After conventional anesthesia into 4# or 5# LMA, balloon gas was injected in 20 mL～30 mL, manual ventilation, respiratory resistance and the situation thorax ups and downs were observed. Results The patients epidural catheterization smoothly, in the anesthesia plane fol- lowing T4, insert the LMA blood pressure, heart rate without significant change. Pneumoperitoneum after the rebound in blood pressure[(20.6 5.0) mm Hg], heart rate did not change significantly, and then airway pressure increased[(5.7 1.6)cm H2O] , surgery performed smoothly, and quickly regained consciousness after the surgery, when all patients admitted gallbladder, they have resumed breathing independently. Con- dusion Laryngeal Mask Airway general anesthesia combined epidural block cause mechanical damage vocal cords and airway, make the stress response light and the sense of rapid recovery, which is a safe and feasible method of anesthesia.

Objective To evaluate the features of pelvic lymph node metastasis and the significance of lymph node dissection in bladder cancer patients treated with radical cystcetomy. Methods The data of 77 bladder cancer patients(58 males and 19 females with mean age of 57 yrs)treated with radical eystectomy and pelvic lymph node dissection from Jan. 1990 to Dec.2008 were analyzed retrospectively.Preoperative TNM staging showed stage T1 tumor of 9 cases,stage T2 of 24 cases,stage T3 of 39 eases and stage T4 of 5 cases.The pelvic lymph nodes were divided into 5 groups according to the anatomic sites.The metastatic rate and dissected lymph node positive rate in these patients were compared. Results The metastatic rate and dissected lymph node positive rate were 27.3%(21/77)and 14.8%(233/1576),respectively.The metastatic rate in these patients from higher to lower were as follows:obturator group 19.5%(15/77),internal iliac group 19.3%(11/57),external iliac group 13.7%(10/73),common iliac group 5.3%(3/57)and presacral group 3.8%(1/26),with a significant difference in those groups,P<0.01.The dissected lymph node positive rates from higher to lower were as follows:external iliac group 23.0%(83/361),obturator group 22.1% (103/467),common iliac group 9.5%(17/179),internal iliac group 6.8%(28/411)and presacral group 1.3 % (2/158), with a significant difference in those groups, P<0.01. There was no metastasis in 9 eases with stage T, tumor. Conclusions In the radical cystectomy for the treatment of bladder cancer, it is suggested that the regional lymph nodes with higher metastatic rate should he resected accordingly, and the group with a higher metastatic rate should be dissected completely. The operation extent may be adjusted according to the result of sentinel lymph node biopsy in the obturator or presacral groups. The pelvic lymphadenectomy is not suggested in the cases of stage T1 tumor.

Objective To explore the efficacy of calmodulin antagonist berbamine(BBM)on multidrug resistance(MDR)reversal and its mechanism. Methods Human breast cancer cell line MCF7 and its adriamycin-resistant counterpart MCF7/ADR were used in the study.The cells were cultured with ADR and different concentration of BBM. MTT assay was used to analyze the effect of BBM on cell growth inhibition.According to the MTT assay,the 50% inhibitory concentration(IC 50 ),the multiples of drug resistance and increased sensitivity of ADR were calculated.The concentration of intracellular ADR and expression level of P-glycoprotein(P-gp)were detected by flowcytometry(FCM).The mRNA expression level of mdr1 gene was detected by semi-quantitative reverse transcriptase polymerase chain reaction(RT-PCR)with ?-actin as internal reference. Results The IC 50 of ADR in MCF7 and MCF7/ADR cells were(0.98?0.06)?mol/L and(101.20?5.72)?mol/L,respectively.The resistant multiple of MCF/ADR cells to ADR was 103 folds higher than that of MCF7 cells.BBM increased the chemo-sensitivity of ADR in MCF7/ADR cells with dose-dependent relationship,i.e.when 5*!?mol/L ,10*!?mol/L and 20*!?mol/L BBM was added into the culture the chemo-sensitivity of ADR was increased to 2.76,5.88,and 28.26 folds(P

Objective To investigate the differential diagnostic value of CT scan minimum attenuation values (minAVsCT) in adrenal adenomas and non-adenomas.Methods CT scan data of 89 cases of clinical and pathologically confirmed adrenal adenomas were subjected to retrospective analysis and compared with data of 46 cases involving 50 non-adenomas (25 metastases,20 pheochromocytomas,3 lymphomas,and 2 cortical carcinomas).The distributions of mean attenuation values (meanAVs) ￥ 10 Hu and minAVs ￥0 Hu and CT histogram analysis with ≥ 10％ negative pixels were observed in adrenal adenomas and non-adenomas,and the diagnostic sensitivity and specificity of these 3 methods for adenomas were calculated.Results The distributions of unenhanced meanAVs ￥ 10 Hu,minAVs ￥0 Hu,and CT histogram analysis with ≥ 10％ negative pixels among cases of adenoma and non-adenoma were 62.9％ (56/89) and 0％ (0/50) (x2=52.687,P=0.000),84.3％ (75/89) and 2％ (1/50) （x2=83.917,P=0.000),and 77.5％ (69/89) and 0％ (0/50) (x2=83.917,P=0.000),respectively.The respective diagnostic sensitivities,specificities,false negative rate (FNR),false positive rate (FPR),positive pre dictive value (PPV),negative predictive value (NPV) and accuracy of these 3 methods for adenomas were 62.9％vs 84.3％ vs 77.5％,100％ vs 98.0％ vs 100％,37.1％ vs 15.7％ vs 22.5％,0 vs 2％ vs 0,100％ vs 98.7％ vs 100％,60.2％ vs 77.8％ vs 71.4％,and 76.3％ vs 89.2％ vs 85.6％.Conclusion Although the specificity and PPV of minAVs≤0Hu is slightly less than meanAVs≤10Hu and CT histogram analysis with ≥ 10％ negative pixels,it exhibits the best sensitivity and accuracy with a simple operation,and is thus suitable for clinical application.

Purpose To evaluate the effectiveness of exfoliative cytology in chronic oral ulcers diagnosis.Methods To examined 107 cases of chronic oral ulcers which were difficult to determine the nature of the ulcer in exfoliaticve cytology,and compared postoperative histopathological results or clinical results,and made the final diagnosis with cytology.Results The qualitative diagnostic accuracy of cytology was 95.3％.The sensitivity and specificity for benign and malignant lesions was 94.6％ and 100％,respectively.False positive rate was 0,and false negative rate was 5.4％,and the coincidence rate of cytological examination with the final pathology was 67.0％.Conclusion Exfoliative cytology has important reference value in chronic oral ulcer diagnosis.It is characterized by simple,rapid procedure and less trauma.Doctors can develop next treatment plan based on the results of exfoliative cytology.