Objective To explore the accuracy and feasibility of infrared computer navigation for femur,tibia tunnel positioning in arthroscopic anterior cruciate ligament (ACL) reconstruction.Methods Data of patients who had undergone ACL reconstruction using infrared computer navigation from January 2012 to June 2013 were retrospectively analyzed.There were 26 males and 9 females,with an average age of 26.8 years old.35 patients were with concomitant meniscal injury 21 cases,and 3 cases with medial collateral ligament injury.All patients were treated with gracilis and semitendinosus knit stitch as grafts,and bone ends were made with hydroxyapatite extrusion screws,door-shaped nails and porous plate.Results The mean follow-up time was 16 months.The rate of postoperative femoral tunnel site measurements was 63.8％±6.6％,and tibial tunnel site measurements was 45.7％±4.2％.1 patient appeared heterotopic ossification in tibia tracker pinhole 3 months after surgery,and the joint activities was normal.Lachman test:there were 1 case with Ⅱ degree,30 with Ⅲ degree,and 4 with Ⅳ degree before operation,and 33 with Ⅰ degree,1 with Ⅱ degree,1 with Ⅲ degree after operation.The KT-1000 test was from 6.47±0.75 mm preoperatively to 1.01±1.14 mm postoperatively.Preoperative knee laxity differences was more than 5 mm in 32 cases,3-5 mm in 3,and after operation they were 0-3 mm in 31,3-5 mm in 2,and less that 0 mm in 2 cases.Lysholm score and Tegner scores were from preoperative 52.74± 10.91 points and 4.64± 1.34 points to postoperative 93.97±4.13 and 6.56±0.81 points.ROM was from 85.6°± 11.2° to 118.3°±5.7°;33 cases were without flexion and extension limited; two cases had knee flexion,extension limitation less than 10°.After straight leg raising training and proprioception functional training for 6 months,the knee ROM returned to normal.Conclusion Infrared computer assisted navigation system for arthroscopic ACL reconstruction is to navigate through the use of anatomical landmarks and kinematic data,kinematic data by detecting and recording the knee,selected a secure tunnel site,viable surgical method,you can make femur,tibia tunnel position more accurately,good curative effect evaluation.

BACKGROUND:With more and more research available,there are different classification systems for intertrochanteric fracture,from Evans and Boyd-Griffin classification to Evans-Jensen and AO/OTA classification,all providing guidance for choosing an appropriate treatment scheme.OBJECTIVE:To review the advance in the treatment of senile unstable intertrochanteric fractures.METHODS:PubMed,Web of Science,WanFang and CNKI databases were searched with the keywords of intertrochanteric fracture,intramedullary nail,hip arthroplasty in English and Chinese,respectively.1 535 literatures were retrieved firstly,and finally 47 articles were included in accordance with the inclusion and exclusion criteria.RESULTS AND CONCLUSION:The therapy conception of intertrochanteric fractures has been changed from conservative traction to early surgical treatment.With the development of technology,the internal fixators have been improved continuously.Screw-plate system has been developed from Jewett plate,AO/ASIF plate to dynamic hip screw.Intramedullary nails such as Gamma,proximal femoral and proximal femoral antirotation nails have been successfully applied in clinic.Senile patients with unstable intertrochanteric fractures also obtain favorable prognosis through active internal fixation,but the high incidence of complications appears because of osteoporosis,osteogenesis deficiency and accompanied by degenerative hip diseases.Thereafter,hip arthroplasty is recommended to treat senile unstable intertrochanteric fractures so as to achieve rapid functional recovery,desired efficacy and low incidence of complications.However,it still remains controversial to choose internal fixation or hip arthroplasty.

Data of 55 patients with duodenal mass lesions treated by endoscopic submucosal dissection (ESD) were retrospectively analyzed. Risk factors of delayed bleeding after ESD were explored by univariate analysis and multivariate unconditional logistic regression analysis. Duodenal delayed bleeding occurred in 5 patients (9.09%). No closure treatment under endoscopy( P=0.035) was significantly different between the delayed bleeding group and the non-delayed bleeding group. Multivariate non-conditional logistic regression showed no closure treatment under endoscopy was an independent risk factor for delayed bleeding after ESD in duodenal mass lesions ( P=0.029, OR=0.079, 95% CI: 0.008-0.776). Patients older than 60 years and who did not take endoscopic closure treatment have higher incidences of delayed bleeding after ESD. No closure treatment under endoscopy is directly related to postoperative delayed bleeding.

AIM:To compare the difference between diopter of refration measured after cycloplegic mydriasis with retinoscopy and hand-held autorefractor so as to explore the feasibility of using hand - held autorefractor for refraction screening in cadet candidates.
METHODS:Respectively using hand-held autorefractor and streak retinoscope to do optometry examination in 317 cadet candidates students ( 634 eyes ) after mydriasis. Main index of refraction values ( spherical, cylindrical mirror degree and axial) were analyzed by difference test and correlation analysis. And the elimination rate was comparatively analyzed.
RESULTS: Diopters of sphere and cyclic refraction measured by hand-held autorefration were significantly higher than those by retinoscopy ( P< 0. 05 ), but the correction analysis showed that there was high correlation (r=0. 733, 0. 694), axial of refration measured by these two methods were non - significant ( P > 0. 05 ). The disqualifying rate using autorefraction was much higher than that using retinoscopy. It was easy to be wrongly eliminated.
CONCLUSION:Because of the high correlation between diopters of autorefraction measured by retinascopy and autorefractor, autorefraction has application value in refraction screening in cadet candidates with normal vision.

Adult ; Crown Lengthening ; Dental Restoration, Permanent ; Esthetics, Dental ; Female ; Humans ; Incisor ; Malocclusion ; therapy

Dental Impression Materials ; Disinfection

Objective To evaluate combination of traditional surgery and sclerotherapy in treating varicose veins of the lower extremity.Method This protocol includes high ligation of the great saphenous vein (GSV),stripping or laser closing of GSV above knee,injection of sclerosing agent into GSV below knee;ligating the perforator veins;sclerosing agent injection for varicose vein in 31 cases of varicose vein of the lower extremitis,among them seven were recurrent cases from April 2015 to June 2015.The clinical classification was as follows:nine cases of C2,four cases of C3,seventeen cases of C4,and one case of C6.All the perforator veins were located before the operation by color ultrasound.Results The number of perforator veins varied significantly (P ＜0.01) among the inner and back side of calfs (4.16 ± 1.86),the lateral calfs (1.29 ± 1.10),and thighs (0.16 ± 0.45).Twenty-four patients received high ligation of GSV combined with stripping of above-knees.Two patients received high ligation of GSV combined with the laser closing of above-knees.Five cases were treated conservatively (in which four have stripped or closed and one was on normal condition).Below-knee GSV were treated by sclerosing foam in 27 cases,and four cases were untreated (in which three have closed and one was normal).All the thirty-one cases underwent mini-incision for ligating the perforators and having the varicose veins closed using the sclerosing foam.All patients' GSV with sclerotherapy have got sclerosed.There were no complications of deep vein thrombosis,pulmonary embolism,or visual disturbance.Conclusion This operation design ensures the effect and prevents the recurrence of varicose vein,as well as reduces surgical trauma.

Objective Patients with knee osteoarthritis undergoing total knee arthroplasty may have a different degree of pain during the perioperative period. This will not only bring a lot of adverse effects to the patients,and directly affect the early postoperative functional exercise and rehabilitation of the knee joint. At present,the commonly methods used to relieve the pain after TKA are:patient con-trolled Intravenous analgesia(PCIA)、patient controlled epidural analgesia( PCEA)、continuous femoral nerve block analgesia(CFNB)、joint peripheral injection analgesia and some methods without using medi-cine. In this paper,the analgesia methods used during the perioperative period of TKA and the latest de-velopment are reviewed.

Objective To explore the effect of serum leptin on puberty development in schoolboys.Methods 170 health schoolboys were investigated on the first spermatorrhea time and detected the levels of serum leptin, testosterone,follicle stimulating hormone (FSH), luteinizing hormone (LH). Case-controlled study was carried by multivariable logistic regression in puberty development of schoolchildren with and without spermatorrhea. Meanwhile, follow-up studies on the independent influencing factors on the puberty development were applied to this investigation in continuous two years.Results The levels of serum leptin, testosterone,FSH and LH of schoolboys with spermatorrhea were significantly higher than those of schoolboys without spermatorrhea. Multiple logistic regression analysis demonstrated that the serum leptin,testosterone, FSH, and bodyweight were the independent influence factors in puberty of the schoolboy.The levels of serum leptin,testosterone of pre-spermatorrhea schoolboys were significantly higher than schoolboys without spermatorrhea.Conclusions Serum leptin,testosterone, FSH, and bodyweight were the independent influence factors in puberty of the schoolboy.The levels of serum leptin and testosterone had obviously changed before spermatorrhea.

Objective To detect the expressions of p53, vascular endothelial growth factor (VEGF) and microvessel density (MVD) in breast cancer and tumor adjacent tissues to explore their relationship and roles in the pathogenesis of breat cancer. Methods The expression levels of p53,VEGF and MVD were assessed in 110 cases of breast cancer and tumor adjacent tissues with SP immunohistochemical method. Results The positive expression rate of VEGF and p53 was 90.0%(99/110) and 42.7%(47/110) in the breast cancer tissues, and 35.5%(39/110) and 4.5%(5/110) in the tumor adjacent tissues, respectively, which had highly significant difference between two groups (P