A Cross-Sectional Study Comparing Traumatic Alopecia Among B-Boys and B-Girls to Other Dance Styles and Its Impact on Dance Performance and Health.

INTRODUCTION: Breaking, often mislabeled as breakdancing in the media, is a dance style originating from the Bronx of New York in the early 1970s. A unique condition in this population is a form of alopecia known as "headspin hole," or "breakdancer overuse syndrome" of the scalp. This form of hair loss may show a variety of patterns based on the activities of the dancer. The purpose of this study was to investigate the relationship between alopecia and breaking, the level of concern dancers have regarding hair loss, barriers to medical treatment, and how it affects their dancing. METHODS: This was a cross-sectional study using an online survey. The survey addressed participants' demographics, hair, dancing styles, training, and health history. Questions about the effects of hair loss on the participants were also asked. RESULTS: This study found that there was a significant difference in hair loss among breakers compared to non-breakers. This was not seen after controlling for age and sex. However, the concern for hair loss was significant even after controlling for these variables. Similarly, hair loss was significantly associated with the frequency of headspins. Despite these concerns, breakers were less likely to seek medical attention. CONCLUSIONS: This study showed that there are significant disparities in hair loss between breaking and other dance styles. Hair loss due to breaking has been shown to have significant effects on an individual's concerns, which may be compounded by the fact that this population is less likely to seek out medical care and have significantly greater substance use compared to the other dancers surveyed. Further research is necessary to investigate interventions to prevent and treat hair loss in this population and the means to decrease the gap in health care in the dance population.

A review of musculoskeletal adaptations in individuals following major lower-limb amputation.

Structural musculoskeletal adaptations following amputation, such as bone mineral density (BMD) or muscle architecture, are often overlooked despite their established contributions to gait rehabilitation and the development of adverse secondary physical conditions. The purpose of this review is to provide a summary of the existing literature investigating musculoskeletal adaptations in individuals with major lower-limb amputations to inform clinical practice and provide directions for future research. Google Scholar, PubMed, and Scopus were searched for original peer-reviewed studies that included individuals with transtibial or transfemoral amputations. Summary data of twenty-seven articles indicated reduced BMD and increased muscle atrophy in amputees compared to controls, and in the amputated limb compared to intact and control limbs. Specifically, BMD was reduced in T-scores and Z-scores, femoral neck, and proximal tibia. Muscle atrophy was evidenced by decreased thigh cross-sectional area, decreased quadriceps thickness, and increased amounts of thigh fat. Overall, amputees have impaired musculoskeletal health. Future studies should include dysvascular etiologies to address their effects on musculoskeletal health and functional mobility. Moreover, clinicians can use these findings to screen increased risks of adverse sequelae such as fractures, osteopenia/porosis, and muscular atrophy, as well as target specific rehabilitation exercises to reduce these risks.

Human maxillary sinus size, shape, and surface area: Implications for structural and functional hypotheses.

OBJECTIVES: Although research into human maxillary sinus (MS) morphology has overwhelmingly focused on sinus volume, other aspects of morphology (e.g., overall shape, mucosal surface area) factor prominently in hypotheses regarding MS form and function. Here, we investigate MS volume in conjunction with measures of MS shape and surface area in a large, diverse sample of modern humans. We test whether variation in MS volume is associated with predictable changes in MS shape (i.e., allometry) and investigate the influence of MS size-shape scaling on mucosal surface area dynamics. MATERIALS AND METHODS: Measures of MS volume and surface area were obtained from computed tomographic (CT) scans of 162 modern human crania from three ancestral backgrounds-Equatorial Africa, Europe, and East Asia. 3D coordinate landmarks and linear measurements were also collected. Multivariate analyses were employed to test for associations between MS volume and other morphological variables. RESULTS: Significant associations between MS volume and 3D shape were identified both across and within the subsamples. Variation in MS volume was found to predominantly relate to differences in MS height and width dimensions relative to MS length. This pattern of allometric scaling was found to differentially influence total mucosal surface area and the SAV ratio. CONCLUSION: This study suggests that variation in MS volume is disproportionately mediated by MS width and height dimensions. This finding has implications for hypotheses which structurally link MS morphology to craniofacial ontogeny and those which suggest that MS morphology may perform adaptive physiological functions.

Ancestry-based variation in maxillary sinus anatomy: Implications for health disparities in sinonasal disease.

Paranasal sinus drainage is mediated by mucociliary transport and gravity. However, human orthograde posture, along with the superior positioning of the maxillary sinus (MS) ostium, increases reliance on the mucociliary system. Previous research has thus suggested that differences in MS size and shape may impede mucociliary clearance, potentially contributing to disparities in sinusitis susceptibility. To further investigate this hypothesis, this study collected 29 three-dimensional (3D) coordinate landmarks and seven linear measurements of MS morphology from 167 computed tomography (CT) scans of crania of European, East Asian, or Equatorial African ancestry. MANOVA results reveal the Asian-derived individuals are characterized by both a significantly taller MS (F = 14.15, p < 0.0001) and a significantly greater distance from the MS floor to the ostium (F = 17.22, p < 0.0001) compared to those of European and African ancestry. A canonical variate (CV) analysis conducted on 3D landmark data provides corroborative results, distinguishing Asian-derived individuals predominantly on the basis of a relatively lower MS floor. As a greater distance between the MS floor and ostium may impede mucociliary clearance, our results suggest MS anatomy may be a more prominent factor in chronic sinusitis among individuals of Asian ancestry compared to those of European and African ancestries. This provides tentative evidence of an anatomical etiology for chronic sinusitis even in the absence of anatomical variants/abnormalities (e.g., nasal polyps, concha bullosa, Haller's cells, and Agger nasi cells). Further research into the relationship between MS anatomy and sinusitis, in addition to socioeconomic inequalities of healthcare, is warranted to continue evaluating possible contributions to health disparities.

Perceptions of nonopioid treatment for pain in a homeless population.

CONTEXT: Opioid abuse has developed into a public health emergency within the last decade because opioid medications, while addictive, are effective and commonly used for pain management. In 2016, over 42,000 deaths were attributed to opioids. Chronic pain affects about 50% of people experiencing homelessness in the US, and they have a higher overall rate of chronic pain than the general population; opioids are among the methods they might use to manage that pain. Complementary and alternative therapies for pain management have largely gone unexplored in the homeless population. OBJECTIVES: To determine, among people experiencing homelessness, the willingness to use and current use of complementary and alternative treatments (physical and massage therapy, chiropractic treatments). A secondary objective was to investigate awareness and perception of osteopathic manipulative treatment (OMT) as a complementary treatment for chronic pain among the homeless population. METHODS: A 32 question survey was administered verbally to guests of True Worth Place Homeless Shelter in Fort Worth, Texas in three 4 hour sessions from February 2019 to April 2019. If participants gave verbal consent, a researcher read the questionnaire, one question at a time, and recorded the participant's responses. The survey included queries for opioid and nonopioid treatment modalities (physical and massage therapy, chiropractic, and OMT) to assess the perception of and current use of each among the population. Appropriate nonparametric statistical analysis was conducted to assess significance and correlations among the treatment groups. RESULTS: Of the 200 survey participants, 126 (91.3%) reported a history of opiate use for pain, but 136 (68.0%) believed that a nondrug pain intervention could better treat their pain. Additionally, 150 participants (75.0%) believed that regular manipulation, including OMT, would decrease their need for pain medications. Participants with a history of opioid use for pain were more likely to believe that the availability of regular manipulation, including OMT, at True Worth Place could decrease their need for pain medication (odds ratio=3.7143; 95% confidence interval=1.6122-8.5572; p=0.0009). Moreover, some participants (141; 70.5%) were already pursuing nondrug pain management modalities such as PT, massage therapy, and chiropractic care. The greatest barriers to receiving OMT were transportation and cost. CONCLUSIONS: This survey study was conducted to determine whether a homeless population would be willing to use nonopioid treatment, particularly OMT, for chronic pain management. Results revealed both a willingness to use and a previous use of nonopioid treatments for pain, along with a high prevalence of opiate use. Despite limited exposure to OMT, this population reported being potentially willing to pursue manipulation, including OMT, as a complementary treatment for pain relief alongside opioids if readily available.

Colorectal Cancer: An Emphasis on Factors Influencing Racial/Ethnic Disparities.

Current statistics related to cancer incidence and cancer-related death rates clearly show that specific racial/ethnic minorities are more likely to be diagnosed and/or die with cancer. Colorectal cancer (CRC) is one of the leading causes of cancer deaths in the United States and it disproportionately affects the non-Hispanic Black or African American (AA) population. When compared to the non-Hispanic White (nHW) population, incidence and death rates in AAs are 28% and 60% higher, respectively. Hispanics have an overall lower CRC incidence rate than nHWs (Hispanics: 35.5 per 100,000 population; nHWs: 40.2 per 100,000 population), but their incidence continues to rise, unlike nHWs, who are experiencing a decline. This disparity between Hispanics and nHWs is further highlighted in the younger Hispanic population. While the cause of the disparities is associated with CRC-related genetic and environmental factors, the role of specific genes/mutations in each population are still not fully unraveled. However, because CRC is a slowly progressing disease, routine screening and/or early intervention are key to achieving better outcomes in CRC patients and ultimately in closing the disparity gap among different populations. This review discusses the major factors influencing the disparities in CRC and also focuses on factors such as treatment response, family history, and screening that potentially contribute to the racial/ethnic disparities in CRC.