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Background Cam-type femoral impingement is caused by structural abnormalities of the hip and is recognized as a cause of degenerative hip arthritis. Identifiable etiologies of this structural abnormality include congenital malformation, pediatric hip disease, and malunion of femoral neck fractures after internal fixation. Purpose The purpose of this study was to determine the prevalence of radiographic impingement in healed Orthopaedic Trauma Association (OTA) type 31B fractures treated with reduction and internal fixation. Methods Seventy OTA 31B hip fractures treated with internal fixation were identified from our institutional trauma database and radiographs were retrospectively reviewed for signs of impingement. Mean follow-up was 53 months after fracture. Alpha angle, Mose templates, and femoral head retroversion were the measurements used to determine impingement. Results The overall prevalence of any sign of radiographic impingement was 75%. Alpha angle was elevated in 32 hips (46%), asphericity was present in 46 femoral heads (65%), and femoral head retroversion was present in 26 hips (37%). The rates were highest in displaced subcapital fractures (OTA 31B-3) with a 63% (13/19) prevalence of elevated alpha angle, 68% (14/19) prevalence of asphericity, and 47% (10/19) prevalence of retroversion. Conclusions Prevalence of radiographic signs of impingement in this population is higher than expected based on population-based controls. Surgeons must be vigilant about reduction and fixation of femoral neck fractures. Malunion should be recognized as early intervention may be beneficial in improving long-term outcomes.

Background Socioeconomic status (SES) is an important determinant of health, but SES measures are frequently unavailable in commonly used datasets. Area-level SES measures are used as proxy measures of individual SES when the individual measures are lacking. Little is known about the agreement between individual-level versus area-level SES measures in mixed urban–rural settings. Methods We identified SES agreement by comparing information from telephone self-reported SES levels and SES calculated from area-level SES measures. We assessed the impact of this agreement on reported associations between SES and rates of childhood obesity, low birth weight <2500 g and smoking within the household in a mixed urban–rural setting. Results 750 households were surveyed with a response rate of 62%: 51% male, 89% Caucasian; mean child age 9.5 years. Individual-level self-reported income was more strongly associated with all three childhood health outcomes compared to area-level SES. We found significant disagreement rates of 22–31%. The weighted Cohen's κ indices ranged from 0.15 to 0.22, suggesting poor agreement between individual-level and area-level measures. Conclusion In a mixed urban–rural setting comprised of both rural and urbanised areas, area-level SES proxy measures significantly disagree with individual SES measures, and have different patterns of association with health outcomes from individual-level SES measures. Area-level SES may be an unsuitable proxy for SES when individual rather than community characteristics are of primary concern.

Background— Despite complete interruption of antegrade coronary artery flow in the setting of a chronic total occlusion (CTO), clinical recognition of myocardial infarction is often challenging. Using cardiac MRI, we investigated the frequency and extent of myocardial infarction in patients with CTO, and assessed their relationship with regional systolic function and the extent of angiographic collateral flow. Methods and Results— We included 170 consecutive patients (median age, 62 years) with angiographically documented CTO. Regional late gadolinium enhancement and wall motion score index were assessed by cardiac MRI with the use of a 17-segment model. Angiographic collateral flow was assessed by the collateral connection grade and the Rentrop score. Evidence of previous myocardial infarction was found in 25% of patients by ECG Q waves, in 69% by regional wall motion abnormality, and in 86% of patients by late gadolinium enhancement. Increased angiographic collateral flow was associated with a lower frequency of Q waves on ECG, and a lower regional wall motion score index, late gadolinium enhancement volume (%), and degree of late gadolinium enhancement transmurality (all P <0.001), as well. Conclusions— The frequency of myocardial infarction in territories subtended by CTO is significantly higher than previously recognized. The degree of myocardial injury downstream epicardial CTO is inversely correlated with the degree of angiographic collaterals.

BACKGROUND:The American Academy of Pediatrics (AAP) introduced revised return-to-care recommendations for mildly ill children in 2009 that were added to national standards in 2011. Child care directors' practices in a state without clear emphasis on return-to-care guidelines are unknown. We investigated director return-to-care practices just before the release of recently revised AAP guidelines.METHODS:A telephone survey with 5 vignettes of mild illness (cold symptoms, conjunctivitis, vomiting/diarrhea, fever, and ringworm) was administered to randomly sampled directors in metropolitan Milwaukee, Wisconsin. Directors were asked about return-to-care criteria for each illness. Questions for return-to-care criteria were open-ended; multiple responses were allowed. Answers were compared with AAP return-to-care recommendations.RESULTS:A total of 305 directors participated. Based on director responses to vignettes, the percentage of correct responses regarding return-to-child care management compared with AAP return-to-care recommendations was low: fever (0%); conjunctivitis (0%); diarrhea (1.6%); cold symptoms (12%); ringworm (21%); and vomiting (80%). Two illnesses (conjunctivitis and cold symptoms) would require the child to have an urgent medical evaluation or treatment not recommended by the AAP, as follows: Conjunctivitis—antibiotics for 24 hours (62%), physician visit (49%), any antibiotic treatment (6%), and symptom resolution (4%); and Cold Symptoms—physician visit (45.6%), antibiotics (10%), and symptom resolution (25%).CONCLUSIONS:Directors’ self-reported return-to-child care practices differed substantially before the release of revised AAP return-to-care recommendations. Active adoption of AAP return-to-child care guidelines would decrease the need for unnecessary urgent medical evaluation and treatment as well as unnecessary exclusion of a child from child care.