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 investigate the change of tear film function in patients with seasonal allergic conjunctivitis (SAC) between acute exacerbation and non-onset phase.Methods This was a prospective controlled study.Functional assessment of tear film was performed in 30 eyes of 15 patients with SAC (SAC group) between acute exacerbation and non-onset phase and 15 healthy controls (control group).The tear film function included tear film break-up-time (BUT),Schirmer I test (SIt) and tear film interferometer imager measurement.Results BUT was significantly decreased in SAC group on acuteexacerbation compared with that on non-onset phase and control group [(6.97 ± 1.56) s vs.(11.27 ± 1.39),(12.00 ± 1.11) s],and there was significant difference (U =20.50,P =0.000;U =1.00,P =0.000).Moreover,BUT in SAC group on non-onset phase was similar as control group(U =322.00,P ＞ 0.05).There was no significant difference in SIt among SAC group on acute exacerbation and non-onset phase and control group(P ＞ 0.05).In tear film interferometer imager measurement,80.0％(24/30) was Ⅰ-Ⅱ grade,20.0％(6/30) was Ⅲ grade in control group,20.0％(6/30) was Ⅰ-Ⅱ grade,80.0％(24/30) was Ⅲ-Ⅴ grade in SAC group on acute exacerbation,60.0％(18/30) was I-Ⅱ grade,40.0％(12/30) was Ⅲ-Ⅴ grade in SAC group on non-onset phase,and there was significant difference between SAC group on acute exacerbaiion and SAC group on non-onset phase,control group (x2 =19.27,P =0.000; x2 =8.40,P =0.004),and there was no significant difference between SAC group on non-onset phase and control group (x2 =1.98,P＞0.05).Conclusion SAC can cause the instability of tear film during the acute exacerbation,whereas this instability can be recovered within the non-onset phase of S A C,which is close to the normal control

Objective To OxplorO thO rOlationship bOtwOOn diffOrOnt vOntilation modO and hypocapnia in prOtOrm infants.Methods From April 2014 to OctobOr 2017,a total of 302 prOtOrm infants with rOspiratory distrOss syndromO in Suining COntral Hospital who rOcOivOd diffOrOnt assistOd vOntilation wOrO sOlOctOd in this rOsOarch. According diffOrOnt vOntilation modO, thOy wOrO dividOd into convOntional mOchanical vOntilation(CMV) group( n=66),thO mOchanical vOntilation modO was CMV, continuous positivO airway prOssurO(CPAP) group(n=149),thO mOchanical vOntilation modO was CPAP, high frOquOncy vOntilation(HFOV) group(n=87),thO mOchanical vOntila-tion modO was HFOV. ThO morbidity of hypocapnia in diffOrOnt groups and prOvOntion mOthods wOrO analyzOd. Results Among 302 childrOn,52casOs had hypocarbonOmia,thO total morbidity of hypocapnia was 17.2%. ThO morbidity of hypocapnia in thO HFOV group was 37.9% (33/87),which in thO CMV group was 21.2% (14/66), which in thO CPAP group was 3.4% (5/149),thO diffOrOncO among thO thrOO groups was statistically significant(χ2 =47.013,P=0.000).Conclusion ThO incidOncO of invasivO vOntilation should bO carOfully considOrOd in prOtOrm infants, OspOcially high frOquOncy vOntilation. To prOvOnt and trOatmOnt of hypocapnia, timOly adjustmOnt of vOntilator paramOtOrs according to blood gas during diffOrOnt vOntilation modO should bO donO.

Objective To analyze the curative effects of total knee arthroplasty(TKA)for severe genu varus combined with flexion deformity.Methods The clinical data of 25 patients(36 knees),who had undergone TKA for severe genu varus combined with flexion deformity from January 2005 to October 2010,were retrospectively analyzed.There were 7 males and 18 females,aged from 55 to 80 years(average 70.5 years).The primary diseases were osteoarthritis in 22 cases and rheumatoid arthritis in 3 cases.HSS knee score was used before and after the operation to assess the efficacy of the TKA.Results All of the patients were followed up for 4 to 9 years(average 6 years).The degree of flexion deformity was reduced from (21 ±63)°to(1.1 ±2.3)°;the degree of the varus decreased from(210 ±4.8)°to(175.6 ±2.1)°;range of motion of the knee joint increased from(70.5 ±20.5)°to(115.1 ±5.3)°;knee score augmen-ted from(33.2 ±10.5)to(90.7 ±8.5);function score added from(35.5 ±14.2)to(85.6 ±10.5);there were 21 cases(8 knees)rated as excellent,2(3 knees)as good and 2(3 knees)as fair,and the excel-lent and good rate was 86%.Most of the patients had normal force line of the knee joint,but 2 patients re-mained varus deformity of 5°~10°.Conclusion Satisfying outcome can be achieved by TKA in treating severe genu varus combined with flexion deformity of the knee.

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.