ObjectiveTo investigate the clinical efficacy of acupuncture at specific points plus kidney-reinforcing Chinese herbal medicine in treating cervical spondylotic vertebral arteriopathy (liver-kidney deficiency type).MethodNinety patients with cervical spondylotic vertebral arteriopathy (liver-kidney deficiency type) were allocated, using a random number table, to a treatment group of 45 cases and a control group of 45 cases. One case dropped out in the control group. The treatment group received acupuncture at Baihui(GV20), Dazhui(GV14), Houxi(SI3), Sanyinjiao(SP6), Taixi(KI3) and Xuanzhong(GB39) plus oral administration of six ingredients with rehmanniaplus radix puerariae formula and the control group, oral administration of six ingredients with rehmannia plus radix puerariae formula alone. The clinical therapeutic effects were evaluated after eight consecutive weeks of treatment.ResultThe total efficacy rate and the cure rate were 91.1% and 62.2%, respectively, in the treatment group and 77.3% and 34.1%, respectively, in the control group; there were statistically significant differences between the two groups (P<0.05). The therapeutic effect was better in the treatment group than in the control group. After treatment, the difference values ofthe vertigo severity, frequency and duration, headache, neck and shoulder pain, and life and work scores on the scale werehigher in the treatment group than in the control group (P<0.05).ConclusionAcupuncture at specific points plus Chinese herbal medicine is more effective than Chinese herbal medicine alone in treating cervical spondylotic vertebral arteriopathy (liver-kidney deficiency type).

Objective:To evaluate the effect of retrograde preparation by using slow-speed handpiece or by ultrasonic tips.Methods:Forty-eight extracted premolars were inspected with Scanning Electron Microscope for the minimum dentine thickness recorded after preparation of root-end cavities by low-speed handpiece and ultrasonic instrument respectively.Results:By using slow-speed handpiece,the minimum dentine thickness recorded after the preparation of root-end cavities was 0.15 mm;whereas that was 0.82 mm and 0.76 mm by ultrasonic instrument with S12 9D and S12 9 respectively(handpiece vs ultrosonic instrument,P

Objective:To evaluate the results of repairing furcation and root perforation using Mineral Trioxide Aggregate(MTA).Methods:Cases with furcation perforations were divided into two groups randomly,MTA and IRM(control group)methods were adopted in present study.Cases that had root perforations were treated with MTA.Pretreatment,immediate posttreatment,and 1year follow-up radiographs were evaluated in a double-blind manner to determine the presence or absence of any pathologic changes adjacent to the perforation site.Results:21 cases were involved.The healing rate of furcation perforation in MTA group was higher(80%)when compared with that in IRM group(75%).However,statistical analysis showed no significant difference in success rates between both groups(P=0.722).The healing rate of root perforation using MTA was 100%.Conclusion:MTA provides an effective seal of furcation /root perforations,and promises in improving the prognosis of perforated teeth.

Objective To investigate the short-term outcome of vacuum sealing drainage (VSD) in the treatment of infection early after tibiofibular fracture surgery.Methods A retrospective analysis was performed on 19 patients sustaining early infection after tibiofibular fracture surgery from December 2012 to December 2014.The patients consisted of 13 males and 6 females,aged from 26 to 57 years [(37.0 ± 5.3) years].There were 4 cases of isolate tibial fracture,2 isolate fibular fracture,and 13 tibial and fibular fracture.Open fractures were noted in 13 cases and close fractures in 6 cases.Infection occurred 14-21 days [(18.0 ± 3.3) days] after open reduction and internal fixation and was treated with gentamicin and VSD.Parameters were monitored dynamically after operation,including white blood cell count (WBC),C-reactive protein (CRP),erythrocyte sedimentation rate (ESR) and limb perimeter.Results The wound was basically debrided 7-10 days after VSD.Eighteen cases had one-stage wound closure with instrumentation preservance,and one case with progressed infection from soft tissue to bone marrow had instrumentation removal and wound suture.VSD decreased markers of inflammation including WBC,CRP,and ESR as well as limb perimeter.A follow-up of 6-24 month [(11.0 ± 2.3)months] showed fracture healing,without complications of detectable deformity growth,dysfunction,or chronic osteomyelitis.Conclusion VSD results in sufficient wound drain,reduction of swelling,decreased levels in CRP and ESR and controlled wound infection,which facilitates wound closure.

Objective To compare the clinical effect of digital orthopedic three-dimensional visualization technology combined with image-based computer navigation and simple image-based computer navigation for percutaneous screw fixation of acetabulum anterior column fractures.Methods A retrospectivecase-control analysis was made on 19 cases undergone percutaneous screw fixation of acetabular anterior column fractures under image-based computer navigation from January 2015 to 2016 March.There were 12 males and 7 females,aged from 21 to 66 years (mean,39.3 years).AO fracture classification was A3 type in 17 cases and B1 type in 2.Based on the application of three-dimensional digital programming,the cases were assigned to two groups:group A (n =9),virtual three-dimensional model was reconstructed and the virtual screw were inserted to uninjured side by software Mimics and group B (n =10),patients were only prepared for routine preoperative preparation.Time of anterior column screw insertion,intraoperative bleeding,intraoperative fluoroscopy frequency,fracture reduction and Majeed score were compared between the two groups.Results All cases were followed up for mean 8.4 months (range,3-12 months).There were no significant differences between groups A and group B in iutraoperative bleeding [(14.1 ± 3.0) ml,(15.1 ± 2.2) ml],good to excellent rate of reduction (89％,80％),good to excellent rate of Majeed score (89％,80％) (P ＞ 0.05).Time of anterior column screw insertion [(22.4-± 3.4) min] and intraoperative fluoroscopy frequency [(24.9 ± 3.8)times] in group A were significantly less than those[(29.4 ± 4.5)min,(30.5 ± 5.8)times] in group B (P ＜ 0.05).Conclusion Digital orthopedic three-dimensional visualization technology is associated with shortened time of anterior column screw insertion and reduced intraoperative fluoroscopy frequency,indicating an effective adjuvant technique for percutaneous screw fixation of acetabulum anterior column under navigation.

Objective To investigate the clinical application of pedicle screw placement technique for pelvic external fixation.Methods A retrospective review was made on 63 patients (37 males and 26 females;23-67 years of age) managed with anterior or combined anterior and posterior external fixation of pelvic fracture between February 2011 and May 2014.According the ways of screw insertion,the study was divided into two groups:observation group (screw was inserted using the pedicle screw placement technique,n =36) and control group (screw was inserted directly,n =27).Tile fracture classification was 11 patients with type B1,7 type B2,7 type B3,5 type C1,3 type C2 and 3 type C3 in observation group,and 9 patients with type B1,7 type B2,4 type B3,4 type C1,2 type C2 and 1 type C3 in control group.Operation time,rate of the penetration,X-ray fluoroscopy times,screw loosening rate,and postoperative complication rate were documented.Radiologic evaluation of the pelvis was detected with the Matta' s criteria.At the final follow-up,functional evaluation of the pelvis was evaluated with the score proposed by Cole et al.Results Period of follow-up was (14.7 ± 3.2)months in observation group and was (13.8 ± 3.1) months in control group.A total of 190 screws were placed in observation group and 138 screws in control group.Better results were found in observation group than in control group with respect to operation time [(18.8 ± 4.1) min vs.(22.6 ± 5.4) min],rate of the penetration (1.6％ vs.8.7％),X-ray fluoroscopy times (1.6 ± 0.8 vs.2.2 ± 0.9),and screw loosening rate (1.6％ vs.6.5％).There were no significant difference between observation and control groups in percentage of good to excellent reduction(89％ vs.85％) and function score [(35.6 ±3.0) points vs.(34.8 ± 3.9) points] (P ＞ 0.05).After operation,3 patients with lateral femoral cutaneous nerve paralysis and none with wouud infection were found in observation group;3 patients with lateral femoral cutaneous nerve paralysis and one patient with wound infection were found in control group.Conclusion Either the pedicle screw placement technique or conventional technique achieves satisfactory clinical effect,but the former owns better results in operation time,screw insertion accuracy,fluoroscopy frequency and rate of screw loosening,suggesting a fast,safe,and effective screw placement method in pelvic external fixation that should be widely applied.

We observed the effect of vibration parameters on lumbar spine under different vibration conditions using finite element analysis method in our laboratory. In this study, the CT-images of L1-L5 segments were obtained. All images were used to develop 3D geometrical model using the Mimics10. 01 (Materialise, Belgium). Then it was modified using Geomagic Studio12. 0 (Raindrop Geomagic Inc. USA). Finite element (FE) mesh model was generated by Hypermesh11. 0 (Altair Engineering, Inc. USA) and Abaqus. Abaqus was used to calculate the stress distribution of L1-L5 under different vibration conditions. It was found that in a vibration cycle, tensile stress was occurred on lumbar vertebra mainly. Stress distributed evenly and stress concentration occurred on the left rear side of the upper endplate. The stress had no obvious changes under different frequencies, but the stress was higher when amplitude was greater. In conclusion, frequency and amplitude parameters have little effect on the stress distribution in vertebra. The stress magnitude is positively correlated with the amplitude.
Biomechanical Phenomena ; Finite Element Analysis ; Humans ; Lumbar Vertebrae ; physiology ; Vibration

Objective A kind of quantitative C reactive protein (CRP) test kit was developed with colloidal gold lateral flow method. Method The kit was prepared with double antibody sandwich technology, and by material optimization and strict process control to improve performance. Quantitative assay was realized by a specialized lateral flow reader. The kit performance was evaluated with series of tests and clinical trial. Results The kit was developed with functional sensitivity≤1 mg/L, linear range 1-200 mg/L, CV<15%and with stability of 12 months. 220 samples clinical trial showed 98.6%of coincidence rate. Pearson Correlation coefficient r is 0.987, which showed no significant difference in performance compare with control kit. Conclusion A quantitative CRP test kit was developed with easy to operating and good stability, Which can be used for point of care testing or laboratory testing.

OBJECTIVETo investigate the efficiency of different angle projection radiograph in diagnosing multiple canals of mandibular first premolars.

METHODSEighty-eight mandibular first premolars that needed endodontic treatment in vivo were selected. The radiograph was taken at a horizontal angles of 0, 20-30 degrees from mesial or distal direction of the tooth preoperative. According to the different angle projection radiographic evaluation, radiographic diagnosis of multiple canals were suspected. After the root canal orifice were detected and located with K files, the root canals were prepared using crown-down technique and obturated using cold lateral condensation technique. The configurations and numbers of root canals were identified and recorded. The postoperative radiograph was taken. According to configurations and postoperative radiograph, the root canal configuration was classified into type I -V.

RESULTSIn eighty-eight mandibular first premolars, 31 multiple canals teeth were suspected in preoperative radiographic diagnosis, 30 multiple canal teeth were detected under clinical evaluation. In case of 31 multiple canal teeth suspected by preoperative radiographic diagnosis, 3 teeth were not found multiple canals under clinical evaluation. While in case of 2 teeth of one canal suspected by preoperative radiographic diagnosis, multiple canal was detected under clinical evaluation. In 31 multiple canal teeth suspected by preoperative radiographic diagnosis, 13 teeth were detected at a horizontal angles of 0 degree and 25 teeth were detected at a horizontal angles of 20-30 degree, 7 teeth were suspected at different angle projection. Clinical detected rate of multiple canal in mandibular first premolar were 34.09% (30/88), 70.00% of which were type IV and V.

CONCLUSIONDifferent angulation radiograph of preoperative will assist to increase clinical detection rate of multiple canals in mandibular first premolar.

Objective To observe the difference of anoreetal dynamics between Milligan-Morgan hemorrhoidectomy plus internal sphinctemtomy and simple Milligan-Morgan bemorrhoidectomy in the treatment of annulus mixed hemorrhoids.Method Measured the anal resting pressure,maximal anal contractive pressure,rectal sensation thresholds,maximal rectal tolerable dose and maximal rectal compliance 1 day before and 3 months after Milligan-Morgan hemorrhoidectomy plus internal sphincterotomy (therapy group,50 cases)and simple Milligan-Morgan bemorrhoidectomy(control group,52 cases)by anorectal manometric device made in Sweden.Results The anal resting pressures of therapy group and eontrol group reduced signifieanfly 3 months after operation compared with that 1 day before operation(P＜ 0.01 or ＜ 0.05),but there was significant difference between the two groups in 3 months after operation(P＜0.05).The maximal anal contractive pressure,reetal sensation thresholds,maximal rectal tolerable dose and maximal rectal compliance were no significant difference between the two groups in 3 months after operation (P ＞0.05).Conclusion Anal sphineterotomy can change the high anal pressure significantly in the treatment of annulus hemorrhoids without copracrasia,it is a proper operation method.