BackgroundChildren’s congenital hip dislocation is ranked first, accounting for 49,4% among other skeletal anomalieswhich cause to physical disability.There is a tendency that the number of newborn with the congenitalhip dislocation is going to be increased in recent years, 5000:1 were in 1976 and 1000:1,3% in 1998.Bilateral dysplasia accounts for 50-62% of the total incidences. In unilateral cases,left hip seems to beinvolved 2 times more than the right,and the sex ratio is 2,5:1. Some cultures who swaddle their infantstightly with their legs straightened have a far greater incidence of developmental dysplasia of the hip. Aresearch indicated that discouraging this traditional swaddling method has reduced the prevalence ofdevelopmental dysplasia of the hip and congenital hip dislocationby 6 times in America. It is noted thatthis methodhas also been implemented in Japan and Turkey.Aim.This research aimed to study about the prevalence of congenital hip dislocation, developmental dysplasiaof the hip and other anomalies among the children who were underwent treatment at Pediatric Traumaand Orthopedic Department of National Trauma and OrthopedicResearch Centre of Mongolia in 2013-2015 and children served by outpatient visit in the clinics in 2011-2015.The following objectives were defined in the scope of the research. Herein:1. Evaluate and determine the percentage and prevalence of congenital hip dislocation anddevelopmental dysplasia of the hip among the children who undergo treatment in Pediatric Traumaand Orthopedic Departmentof National Trauma Orthopedic Research Center of Mongolia.2. Evaluate and determine the percentage and prevalence of congenital hip dislocation, developmentaldysplasia of the hip and other anomalies among children who are being served by outpatient visit inClinics of National Trauma and Orthopedic Research Center of Mongolia.Materialis and MethodThis research were studied the prevalence of congenital hip dislocation, developmental dysplasia of thehip and other anomalies among the children who were underwent treatment at Pediatric Trauma andOrthopedic Department of National Trauma and OrthopedicResearch Centre of Mongolia in 2013-2015and children served by outpatient visit in the clinics in 2011-2015.ResultTotal of 40559 inpatients underwent treatment in National Trauma andOrthopedic Research of Mongolia;of which 12217 were inpatient in Pediatric Trauma and Orthopedic Department, aged 0-19;of which1351 has been registered with birth defects of hip; of which 248 has been diagnosed with developmentaldysplasia hip, 869 with congenital hip dislocation. Sex ratio of cases of congenital hip dislocationinmales to female is around 1:4.Total of 633 (13,8%) examinations were performed in the clinics in 2011;704 (15,3%) in 2012;962 (20,9%)in 2013;1013 (22%) in 2014;1287 (28%) in 2015 respectively. It shows an increase in the number ofexaminations year by year.Total of 4142 (90,1%) cases were diagnosed with congenital hip dislocation and developmental dysplasiain both hips; left hip has been dislocated 2 times more than the right, 162 (3,5%) with congenitaldislocation of right hip; 292 (6.4%) with congenital dislocation of left hip.ConclusionTo conclude, the analysis above shows that the prevalence of developmental dysplasia of the hip andcongenital hip dislocation is still high in Mongolia. Therefore, number of diagnosis with congenital hipdislocation has rapidly increased in the recent 2 years.

Introduction: Endometritis (EMM) is the most common maternal infectious complication of childbirth, occurring more commonly after low transverse cesarean section (LTCS) than vaginal delivery [1]. In a Cochrane review, the mean incidence of EMM following elective cesarean section was 7% and after non-elective or emergency operations was 30% [4]. A variety of independent risk factors for post-cesarean EMM have been identified in previous studies, including no prior cesarean section [5], low infant Apgar scores [6], trial of labor [7], premature rupture of membranes (PROM) >24 hours, young maternal age [8], preterm or post-term gestation [9], antepartum infections [10], pre-eclampsia, meconium [11], amnion infusion, postpartum anemia, multiple vaginal examinations [12], and manual removal of the placenta [13]. The time of ruptured membranes before delivery is examined via dichotomized time thresholds, the risks of chorioamnionitis and endomyometritis are significantly increased at 12 hours and 16 hours, respectively [16, 17]. A change in policy to administer prophylactic antibiotics before skin incision led to a significant decline in postcesarean delivery surgical-site infections [18, 19]. Objective: To determine independent risk factors for EMM following (LTCS). Material and Method: The study was case-control study, between 2022 to 2023 years at the “Urguu” specialized maternal hospital Ulaanbaatar, Mongolia. Case group has 101 women with EMM and the control group has 100 women with non EMM after LTCS. Results: The age of 2 study groups was 32.4 and 32.8, body mass index was 30 kg/m2 and 30.7 kg/ m2.Young maternal age <25 has a 22% (p=0.001, OR=4.5) influence on the occurrence of EMM. Other pregnancy related factors were not associated with the EMM after LTCS. (p>0.05). Delivery risk factors has increases the EMM by 15% (p=0.002), labor induction by 20% (p=0.001), duration of labor >12 hours by 40% (p=0.001), PROM increased by 15% (p=0.005), meconium by 15% (p=0.005), chorioamnionitis by 15% (p=0.001). Conclusion Our study, young maternal age <25 has influence on the occurrence of EMM. Other pregnancy related factors were not associated with the EMM after LTCS. Delivery associated risk factors are affected by the EMM after LTCS. The labor after LTCS, labor induction, PROM >12 hours, duration of labor, number of vaginal exams>4, meconium, chorioamnionitis increased by EMM. Young maternal age (<25) increased the risk of EMM attached with labor association risk factors.