Exploring the Severity of Craniomaxillofacial Injuries From Horseback Riding.

PURPOSE: The purpose of our study is to assess the severity of craniomaxillofacial injuries from horseback-riding accidents. MATERIALS AND METHODS: This is a 20-year retrospective cross-sectional study of the National Electronic Injury Surveillance System. Injuries from the activity of horseback-riding were included if they occurred in the craniomaxillofacial complex. Study predictors were derived from both patient and injury characteristics. The study outcome was the presence or absence (probability) of hospital admission from the emergency department. A multiple logistic regression model was created to model the odds of admission using all significant univariate predictors. RESULTS: The final sample consisted of 6730 patients. The decrease in horseback riding injuries from 2000 to 2019 was significant (P = 0.042).The mean age of the sample was 27.80 years (range: 2-91 years). Gender-wise, females composed the majority of injured horseback riders (71.9%). Over two-thirds of the sample consisted of White patients (68.1%). Over three-fourths of the injuries occurred in the head (80.9%), rendering it the most frequently injured region of the craniomaxillofacial complex. The most common primary diagnoses were internal organ injury (40.2%). On univariate analysis, the admission rates were significantly associated with gender (P < 0.01), age group (P < 0.01), body part injured (P < 0.01), diagnosis (P < 0.01), location of injury (P < 0.01) and mechanism of injury (P < 0.05). Relative to young adults, children (odds ratio [OR], 1.579; 95% OR confidence interval [CI] [1.31, 1.91]; P < 0.01), adults (OR, 1.857; 95% OR CI [1.55, 2.22]; P < 0.01), and seniors (OR, 3.738; 95% OR CI [2.73, 5.12]; P < 0.01) were each independently associated with an increased odds of admission. Relative to the mouth, the head had 4.8 odds of admission (P < 0.01) and the face had 2.5 odds of admission (P < 0.01). Relative to contusions/abrasion, concussions (OR, 3.542; 95% OR CI [2.28, 5.49]; P < 0.01) and internal organ injuries (OR, 9.020; 95% OR CI [5.90, 13.79]; P < 0.01), lacerations (OR, 1.946; 95% OR CI [1.17, 3.24]; P < 0.05), and fractures (OR, 32.068; 95% OR CI [20.53, 50.09]; P < 0.01) were each independently associated with increased odds of admission relative to contusions. Direct trauma from a horse (OR, 1.422; 95% OR CI [1.06, 1.91]; P < 0.05) was associated with independently increased odds of admission relative to other injuries. Injuries that took place in a farm (OR, 1.617; 95% OR CI [1.25, 2.09]; P < 0.01) and a street (OR, 2.735; 95% OR CI [1.83, 4.09]; P < 0.01) were each independently associated with increased odds of admission. Finally, relative to females, males (OR, 1.374; 95% OR CI [1.20, 1.57]; P < 0.01) were independently associated with increased odds of admission. CONCLUSIONS: Many variables contribute to the chance of hospital admission from horseback riding. Fractures seem to be the leading risk factor for hospital admission, therefore, future study may look into how to reduce the incidence of fractures through the employment of more protective equipment than helmets for horseback riders.

Converting Light Energy to Chemical Energy: A New Catalytic Approach for Sustainable Environmental Remediation.

We report a synthetic approach to form cubic Cu2O/Pd composite structures and demonstrate their use as photocatalytic materials for tandem catalysis. Pd nanoparticles were deposited onto Cu2O cubes, and their tandem catalytic reactivity was studied via the reductive dehalogenation of polychlorinated biphenyls. The Pd content of the materials was gradually increased to examine its influence on particle morphology and catalytic performance. Materials were prepared at different Pd amounts and demonstrated a range of tandem catalytic reactivity. H2 was generated via photocatalytic proton reduction initiated by Cu2O, followed by Pd-catalyzed dehalogenation using in situ generated H2. The results indicate that material morphology and composition and substrate steric effects play important roles in controlling the overall reaction rate. Additionally, analysis of the postreacted materials revealed that a small number of the cubes had become hollow during the photodechlorination reaction. Such findings offer important insights regarding photocatalytic active sites and mechanisms, providing a pathway toward converting light-based energy to chemical energy for sustainable catalytic reactions not typically driven via light.