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Background Annual rankings by US News and World Report are a widely utilized metric by both health care leaders and patients. One longstanding measure is time to treatment of femur shaft fractures. Hospitals able to provide at least 80% of pediatric patients with an operating room start time within 18 hours of admission to the emergency department score better as part of the overall pediatric orthopaedic ranking. Therefore, it is important to determine whether the 18-hour treatment time for pediatric femur shaft fractures is a clinically meaningful metric. Methods A retrospective review of clinical outcomes of 174 pediatric patients (aged below 16 y) with isolated femur shaft fractures (Injury Severity Score=9) was conducted from 1997 to 2017 at a single level I pediatric trauma center. The 2 comparison groups were patients receiving fracture reduction within 18 hours of emergency department admission (N=87) or >18 hours (N=87). Results Patient, injury, and surgical characteristics were similar between the 2 groups. Both groups had a similar mean age (treatment 18 h=8.1 y). Patients who received treatment within 18 hours were more often immobilized postoperatively (70.1% vs. 53.5%; P=0.0362) and had a shorter median hospital length of stay (2 vs. 3 d; P=0.0047). There were no statistically significant differences in any outcomes including surgical site infection, time to weight-bearing (treatment less then 18 h mean=48.1 d vs. 52.5 d), time to complete radiographic fracture healing (treatment less then 18 h mean=258.9 d vs. 232.0 d), decreased range of motion, genu varus/valgus, limb length discrepancy, loss of reduction, or persistent pain. Conclusions Treatment of pediatric femur shaft fractures within 18 hours does not impact clinical outcomes. National quality measures should therefore use evidence-based metrics to help improve the standard of care. Level of evidence Therapeutic level III.Background Missed posterolateral corner (PLC) injuries are a known cause of anterior cruciate ligament reconstruction (ACL) failure in the adult population. Failed ACL reconstruction causes significant morbidity in the skeletally immature pediatric population. There is little literature on the character and potential significance of PLC injuries in skeletally immature patients. Methods Magnetic resonance imaging studies of the knee at a tertiary care children’s hospital for patients who underwent an ACL reconstruction without PLC surgery were retrospectively reviewed. Demographic variables were obtained through chart review, and magnetic resonance imaging studies were evaluated for PLC (popliteus, fibular collateral ligament, popliteofibular ligament, and arcuate ligament) injury, and ACL, medial collateral ligament (MCL), bone bruise, fracture, and meniscal pathology by an experienced pediatric musculoskeletal radiologist. Results A total of 50 patients with a mean age at 13.3 years at injury were analyzed. dicted the likelihood of PLC injury. Further research is needed regarding the risk of ACL reconstruction failure from associated PLC injury and the indications for PLC reconstruction in skeletally immature patients. Level of evidence Level IV-diagnostic study.Background Medial epicondyle fractures represent up to 20% of elbow fractures in children and adolescents. There is a growing body of literature to support surgical fixation for displaced fractures. However, controversy regarding imaging modality for displacement measurement and surgical indications remain controversial. The purpose of this survey was to gauge Latin American surgeons’ practices and preferences for the evaluation and treatment of medial epicondyle fractures. Methods A web-based survey containing 19 questions was distributed to active members of SLAOTI (Sociedad Latinoamericana de Ortopedia y Traumatología Infantil) in November 2018. The survey elicited information regarding surgeon demographics, evaluation methods, the factors involved in the decision to perform surgery, and their experience in cases of symptomatic nonunion. Categorical variables were summarized using frequencies and proportions. Analysis of associations between surgeon demographics and treatment preferences were carried out. Results A total of 193 out of 354 completed questionnaires were returned (54% response rate). In total, 74% of the participants (142/193) favored radiographs for the evaluation of the fracture displacement, and 25.4% (49/193) added a computed tomography scan for a more detailed evaluation. WZB117 The majority of respondents (48.2%) would consider a 5 mm displacement as the cutoff for surgical treatment, 21.8% 2 mm, 20.7% 10 mm, and 9.3% 15 mm. There were no differences between the experience of the participants, academic versus private setting, or training regarding surgical/nonsurgical management. Conclusions There are significant differences in opinions between SLAOTI members as to the optimal management of medial epicondyle fractures. Implications of disagreement in evaluation and treatment support the need for multicenter prospective studies to develop evidence-based guidelines for the management of this fracture. Level of evidence Level V-expert opinion. Cross-sectional electronic survey.Background Recently published studies call into question the clinical utility of postoperative radiographs in the management of pediatric supracondylar humerus (SCH) fractures. This topic has been addressed as part of the American Academy of Orthopaedic Surgeons Appropriate Use Criteria, although recommendations regarding serial radiographs were not included as part of the discussion. The purpose of this systematic review is to summarize the recent literature regarding the utility of postoperative radiographs as part of the management of SCH fractures. Methods A systematic review of the literature published between January 1, 2000 and December 31, 2017 was conducted using PubMed/MEDLINE and SCOPUS databases to identify studies relevant to postoperative management of SCH. Eight studies met the inclusion criteria, from which data pooled estimates and an analysis of heterogeneity were calculated. Results The pooled estimate of changes in fracture management on the basis of postoperative radiographs was 1% (0.98±0.