Instructions for the use of L-PRF in different clinical indications.

Autologous platelet concentrates (APCs) have demonstrated clear benefits across various clinical applications, including alveolar ridge preservation, guided tissue regeneration, guided bone regeneration, sinus floor elevation (both lateral window approach and transcrestal technique), endodontic surgery, the treatment of medication-related osteonecrosis of the jaw bones, and periodontal plastic surgery. To ensure an optimal clinical outcome, clinicians must adhere strictly to the protocol to prepare the APCs and, especially follow evidence-based surgical guidelines, often simple but crucial, to minimize the likelihood of errors. The majority of clinical trials reported on second-generation APCs [the leukocyte- and platelet-rich fibrin (L-PRF) family, including its modifications (A-PRF, A-PRF+, CGF, T-PRF, H-PRF, etc.)]. These second-generation APCs offer additional benefits compared to the first-generation APCs, making them the preferred choice for the development of clinical recommendations. These recommendations have been formulated through a meticulous examination of the available clinical data and the clinical experience of the authors of this paper.

Disruption of gut barrier integrity and host-microbiome interactions underlie MASLD severity in patients with type-2 diabetes mellitus.

Aberration of the "gut-liver axis" contributes to the development and progression of metabolic dysfunction-associated steatotic liver disease (MASLD). Here, we use multi-omics to analyze the gut microbiota composition and metabolic profile of patients with type-2 diabetes mellitus (T2DM). T2DM patients were screened for liver disease by blood tests, ultrasound, and liver stiffness measurements. Stool microbiota was analyzed by 16S rRNA gene sequencing; metabolomic profiling by Nuclear Magnetic Resonance spectroscopy and Ultra-High Performance-Mass Spectrometry. Microbiome and metabolic signatures were analyzed in the whole cohort and in matched subsets to identify signatures specific for steatosis (MASLD±) or fibrosis (Fibrosis±). Gut permeability was assessed in-vitro using monolayers of MDCK cells and trans-epithelial electric resistance (TEER). Cytokine profile was assessed in serum and stools.Overall, 285 patients were enrolled: 255 serum, 252 urine and 97 stool samples were analyzed. Anaeroplasma and Escherichia/Shigella ASVs were higher, while Butyricicoccus ASVs were lower in those with normal liver. In MASLD±, Butyricicoccus ASV was significantly higher in those with steatosis. In the Fibrosis±, Butyricicoccus ASV was significantly lower in those with fibrosis. Glycochenodeoxycholic acid-3-sulfate (G-UDCA-3S) appeared to be higher in MASLD with fibrosis. Fecal water from patients with MASLD and fibrosis caused the greatest drop in the TEER vs those with normal liver; this was reversed with protease inhibitors. Finally, fecal IL-13 was lower in MASLD with fibrosis. We identified microbiome signatures which were specific for steatosis and fibrosis and independent of other metabolic risk factors. Moreover, we conclude that protease-related gut permeability plays a role in those MASLD patients with fibrosis, and that disease progression is linked to a gut-liver axis which is at least partially independent of T2DM.

Genetic Diversity of the Amur Tiger (Panthera tigris altaica): Are There Differences between the 20th and the Early 21st Centuries?

Polymorphism of nine microsatellite loci in the Sikhote-Alin tiger population was analyzed in the modern and recent historical periods, using blood, excrement, and museum bone samples. Tests for excess heterozygosity to determine whether the population went through a period of low abundance and a low value of the Garza-Williamson coefficient indicated that such events were highly probable to occur in both recent and earlier history. The mean effective population size Ne of a current sample was 34.4 (95% confidence interval 17-106.8). This fact is of great interest in the contest of conservation and restoration of endangered large cat species.

First report of Acanthamoebae spp. isolation from a volcanic mud spring in the Philippines.

Acanthamoebae spp. is considered highly adaptive. The present study aims to establish the occurrence of free-living amoebae, particularly Acanthamoebae, to exist in extreme environments such as volcanic mud springs. Fifty surface water samples were collected from mud springs (34 samples), and flat rocks (16 samples) were collected, processed, and cultured. After 14 days of incubation, 32 (64%) plates showed positive amoebic growth. Nineteen (55.8%) of these plates came from the mud spring collection site, while 13 (81.2%) samples are from flat rock sources. DNAs from positive samples were made to react to polymerase chain reaction (PCR) using primer sets JDP1 5'GGCCCAGATCGTTTACCGTGAA-3' and JDP2 5'TCTCACAAGCTGCTAGGGAGTCA-3' for cells that resemble Acanthamoebae. Sequencing and basic local alignment search tool (BLAST) revealed a 99% similarity of isolates to Acanthamoebae spp. Identification of Acanthamoebae spp that can survive in higher temperatures is important public health information. The existence of such isolates in the environment has dire health implications, which suggests revisitation of water treatment protocols. Detection of such organisms in environmental sources used for recreational purposes provides information to local and international tourists who frequent them. This will result in the mitigation of potential future infection.

Biopolymers for Tissue Engineering: Crosslinking, Printing Techniques, and Applications.

Currently, tissue engineering has been dedicated to the development of 3D structures through bioprinting techniques that aim to obtain personalized, dynamic, and complex hydrogel 3D structures. Among the different materials used for the fabrication of such structures, proteins and polysaccharides are the main biological compounds (biopolymers) selected for the bioink formulation. These biomaterials obtained from natural sources are commonly compatible with tissues and cells (biocompatibility), friendly with biological digestion processes (biodegradability), and provide specific macromolecular structural and mechanical properties (biomimicry). However, the rheological behaviors of these natural-based bioinks constitute the main challenge of the cell-laden printing process (bioprinting). For this reason, bioprinting usually requires chemical modifications and/or inter-macromolecular crosslinking. In this sense, a comprehensive analysis describing these biopolymers (natural proteins and polysaccharides)-based bioinks, their modifications, and their stimuli-responsive nature is performed. This manuscript is organized into three sections: (1) tissue engineering application, (2) crosslinking, and (3) bioprinting techniques, analyzing the current challenges and strengths of biopolymers in bioprinting. In conclusion, all hydrogels try to resemble extracellular matrix properties for bioprinted structures while maintaining good printability and stability during the printing process.

Cross-cultural invariance of the Spanish version of the COVID-19 Assessment Scorecard to measure the perception of government actions against COVID-19 in Latin America.

OBJECTIVES: The present study aimed to evaluate the measurement invariance of a general measure of the perception of governmental responses to COVID-|19 (COVID-SCORE-10) in the general population of 13 Latin American countries. METHODS: A total of 5780 individuals from 13 Latin American and Caribbean countries selected by non-probabilistic snowball sampling participated. A confirmatory factor analysis was performed and the alignment method was used to evaluate invariance. Additionally, a graded response model was used for the assessment of item characteristics. RESULTS: The results indicate that there is approximate measurement invariance of the COVID-SCORE-10 among the participating countries. Furthermore, IRT results suggest that the COVID-SCORE-10 measures with good psychometric ability a broad spectrum of the construct assessed, especially around average levels. Comparison of COVID-SCORE-10 scores indicated that participants from Cuba, Uruguay and El Salvador had the most positive perceptions of government actions to address the pandemic. Thus, the underlying construct of perception of government actions was equivalent in all countries. CONCLUSION: The results show the importance of initially establishing the fundamental measurement properties and MI before inferring the cross-cultural universality of the construct to be measured.

Assessment of Obsessive Thoughts About COVID-19 in 7 Latin American Countries: Structure and Measurement Invariance of the Obsession With COVID-19 Scale.

The present study aimed to evaluate the measurement invariance of the Obsession with COVID-19 Scale (OCS) among seven Latin American countries: Bolivia, Brazil, Cuba, El Salvador, Guatemala, Paraguay, and Uruguay. Although the OCS has been used in several countries and languages, there is a need for approaches that better integrate the cross-cultural equivalence of the scale. A total of 3185 people participated in the study. The results indicated the presence of a unidimensional structure and good reliability indices for the OCS in each country. The alignment method indicated that the OCS is an invariant measure of COVID-19 obsession among the populations of seven Latin American countries. The findings based on IRT analysis indicated that all OCS items had adequate discrimination and difficulty parameters. The findings contribute to the understanding of the internal structure of the scale in different countries at the same time, something that has been pending evaluation.

Relationship Between Fear of COVID-19, Conspiracy Beliefs About Vaccines and Intention to Vaccinate Against COVID-19: A Cross-National Indirect Effect Model in 13 Latin American Countries.

The present study explored the predictive capacity of fear of COVID-19 on the intention to be vaccinated against COVID-19 and the influence in this relationship of conspiracy beliefs as a possible mediating psychological variable, in 13 Latin American countries. A total of 5779 people recruited through non-probabilistic convenience sampling participated. To collect information, we used the Fear of COVID-19 Scale, Vaccine conspiracy beliefs Scale-COVID-19 and a single item of intention to vaccinate. A full a priori Structural Equation Model was used; whereas, cross-country invariance was performed from increasingly restricted structural models. The results indicated that, fear of COVID-19 positively predicts intention to vaccinate and the presence of conspiracy beliefs about COVID-19 vaccines. The latter negatively predicted intention to vaccinate against COVID-19. Besides, conspiracy beliefs about COVID-19 vaccines had an indirect effect on the relationship between fear of COVID-19 and intention to vaccinate against COVID-19 in the 13 countries assessed. Finally, the cross-national similarities of the mediational model among the 13 participating countries are strongly supported. The study is the first to test a cross-national mediational model across variables in a large number of Latin American countries. However, further studies with other countries in other regions of the world are needed.

El desabastecimiento de BCG para instilación intravesical se asocia a la recidiva tumoral precoz en pacientes con tumor vesical no-músculo invasor de alto riesgo / BCG shortage for intravesical instillation is associated with early tumor recurrence in patients with high-risk non-muscle-invasive bladder tumors

Introducción Durante 2019 se produjo una escasez mundial de cepas de BCG para instilación intravesical, limitando la disponibilidad de esquemas de dosis completas para la fase de mantenimiento. El objetivo principal del estudio fue analizar el impacto del desabastecimiento de BCG sobre la recidiva tumoral en nuestro centro. Los criterios de valoración secundarios incluyeron las tasas de recidiva y supervivencia libre de progresión y las características específicas de la recidiva tumoral. Métodos Estudio de cohortes retrospectivo que incluye a 158 sujetos (64 tratados durante 2019 y 94 durante 2017) con cáncer vesical no infiltrante de alto riesgo y tratados con una combinación de resección transuretral de vejiga (RTUV) seguida de instilación intravesical de BCG adyuvante en un hospital terciario de España. Se analizaron las características basales de ambos grupos. El periodo transcurrido hasta el evento de interés (recaída; incluyendo recurrencia o progresión) se estimó con el análisis de supervivencia de Kaplan-Meier. Las tasas de supervivencia libre de enfermedad se analizaron mediante un modelo multivariable de regresión de Cox de riesgos proporcionales. Resultados La mediana del tiempo de seguimiento fue de 24 y 50 meses en las muestras de 2019 y 2017, respectivamente, con una mediana del número de instilaciones de 8 y 12, respectivamente. Se observó una mediana de tiempo hasta la recurrencia de 285 días (145-448) durante 2019 y de 382 días (215-567) en 2017 (log-rank p=0,025). Un análisis multivariable adicional reveló un HR proporcional para la tasa de supervivencia libre de enfermedad de 1,87 (IC 95%: 1,04-3,37 p=0,036). No se observaron diferencias estadísticamente significativas en las características de la recaída tumoral (AU)

Introduction During 2019 there was a worldwide shortage of BCG strains for intravesical instillation, limiting the availability of full dose schemes for maintenance courses. The main objective was to analyze the impact on tumoral relapse secondary to BCG shortage in our center. Secondary outcomes included recurrence and progression–free survival rates and tumoral relapse specific characteristics. Methods Retrospective cohort study including 158 subjects (64 treated during 2019 and 94 during 2017) with high-risk non-muscle invasive bladder cancer and treated with a combination of Transurethral bladder resection (TURB) followed by adjuvant intravesical instillation with BCG in a tertiary hospital in Spain. Basal characteristics of both groups were analyzed. Times to event of interest (relapse; including recurrence and/or progression) were estimated with Kaplan-Meier survival analysis. Disease-free survival rates were analyzed using a multivariable Cox regression model of proportional hazards. Results Median follow-up in the 2019 sample was 24 months and 50 months in the 2017 group with a median number of instillations of 8 and 12 respectively. Median time to relapse of 285 days (145-448) during 2019 and 382 days (215-567) in 2017 were observed (logRank P=.025). Further multivariable analysis revealed a proportional hazard ratio (HR) for disease-free survival rate of 1.87 (95% CI: 1.04-3.37 P=.036). No statistically significant differences in tumoral relapse characteristics were observed. Conclusion BCG shortage and subsequent reduced-dose schemes used for intravesical instillation due to limited availability, increase early tumoral relapse rates. These findings are consistent with available evidence, showing the need for full-dose BCG courses (AU)

Análisis de la demanda asistencial desde atención primaria a traumatología: propuestas para la mejora del continuo asistencial / Analysis of the demand of care from Primary Care to Traumatology: Proposals for the improvement of the continuous care

Objetivo: Analizar las derivaciones dirigidas desde Atención Primaria a Cirugía Ortopédica y Traumatología. Como objetivo secundario, establecer 2escenarios de derivación, con el fin de conocer el impacto de la variabilidad en la derivación. Material y métodos: Estudio observacional de carácter transversal de análisis de las derivaciones de Atención Primaria a Cirugía Ortopédica y Traumatología durante el primer semestre de los años 2018, 2019 y 2021. Se ha examinado el número de derivaciones que emite cada facultativo y cada centro de salud de Atención Primaria, atendiendo a la clasificación de las distintas zonas básicas de salud. Resultados: Existe una gran variabilidad en el número de derivaciones, tanto según el tipo de zona básica de salud (p < 0,001) como por cada facultativo (p < 0,001). Las ratios de derivación se comportan de forma uniforme en el tiempo (p < 0,001). Debido al alto número de derivaciones, se han construido dosescenarios: en el primero de ellos la ratio de derivación se situaría en la zona media del espectro de la tasa de derivación. En el segundo escenario, se han tomado como referencia las menores ratios de derivación registradas. La reducción de la variabilidad en los 2escenarios supuestos proporciona una disminución importante de la demanda asistencial. Conclusiones: La reducción de la variabilidad tendría un efecto beneficioso sobre la capacidad asistencial del servicio de Cirugía Ortopédica y Traumatología.

Objective: To analyze referrals from Primary Care consultation to Orthopaedic Surgery reference department. As a secondary objective, to establish 2referral scenarios in order to determine the impact of variability on referral. Material and methods: Cross-sectional observational study, analyzing referrals from Primary Care to Orthopaedic Surgery during the first half of the years 2018, 2019, and 2021. The number of referrals issued by each doctor and each Primary Care Healthcare Center was examined, according to the classification of the different Basic Healthcare Zones. Results: There is great variability in the number of referrals, both according to the type of Basic Healthcare Zone and by each Primary Care facultative. The referral ratios behaved uniformly over time (P<0.001). Due to a large number of referrals, 2scenarios have been constructed: In the first scenario, the referral ratio would be in the middle of the referral rate spectrum. In the second scenario, the lowest referral ratios recorded have been taken as a reference. The reduction of variability in the 2scenarios assumed provides a significant reduction in the demand for care. Conclusion: Reducing variability would have a beneficial effect on the capacity of the Orthopaedic Surgery service to provide care.(AU)

[Translated article] Analysis of the demand of care from Primary Care to Traumatology: Proposals for the improvement of the continuous care / Análisis de la demanda asistencial desde atención primaria a traumatología: propuestas para la mejora del continuo asistencial

Objetivo: Analizar las derivaciones dirigidas desde Atención Primaria a Cirugía Ortopédica y Traumatología. Como objetivo secundario, establecer 2escenarios de derivación, con el fin de conocer el impacto de la variabilidad en la derivación. Material y métodos: Estudio observacional de carácter transversal de análisis de las derivaciones de Atención Primaria a Cirugía Ortopédica y Traumatología durante el primer semestre de los años 2018, 2019 y 2021. Se ha examinado el número de derivaciones que emite cada facultativo y cada centro de salud de Atención Primaria, atendiendo a la clasificación de las distintas zonas básicas de salud. Resultados: Existe una gran variabilidad en el número de derivaciones, tanto según el tipo de zona básica de salud (p < 0,001) como por cada facultativo (p < 0,001). Las ratios de derivación se comportan de forma uniforme en el tiempo (p < 0,001). Debido al alto número de derivaciones, se han construido dosescenarios: en el primero de ellos la ratio de derivación se situaría en la zona media del espectro de la tasa de derivación. En el segundo escenario, se han tomado como referencia las menores ratios de derivación registradas. La reducción de la variabilidad en los 2escenarios supuestos proporciona una disminución importante de la demanda asistencial. Conclusiones: La reducción de la variabilidad tendría un efecto beneficioso sobre la capacidad asistencial del servicio de Cirugía Ortopédica y Traumatología.

Objective: To analyze referrals from Primary Care consultation to Orthopaedic Surgery reference department. As a secondary objective, to establish 2referral scenarios in order to determine the impact of variability on referral. Material and methods: Cross-sectional observational study, analyzing referrals from Primary Care to Orthopaedic Surgery during the first half of the years 2018, 2019, and 2021. The number of referrals issued by each doctor and each Primary Care Healthcare Center was examined, according to the classification of the different Basic Healthcare Zones. Results: There is great variability in the number of referrals, both according to the type of Basic Healthcare Zone and by each Primary Care facultative. The referral ratios behaved uniformly over time (P<0.001). Due to a large number of referrals, 2scenarios have been constructed: In the first scenario, the referral ratio would be in the middle of the referral rate spectrum. In the second scenario, the lowest referral ratios recorded have been taken as a reference. The reduction of variability in the 2scenarios assumed provides a significant reduction in the demand for care. Conclusion: Reducing variability would have a beneficial effect on the capacity of the Orthopaedic Surgery service to provide care.(AU)

BCG shortage for intravesical instillation is associated with early tumoral recurrence in patients with high-risk non-muscle invasive bladder tumours.

INTRODUCTION: During 2019 there was a worldwide shortage of BCG strains for intravesical instillation, limiting the availability of full dose schemes for maintenance courses. The main objective was to analyze the impact on tumoral relapse secondary to BCG shortage in our center. Secondary outcomes included recurrence and progression-free survival rates and tumoral relapse specific characteristics. METHODS: Retrospective cohort study including 158 subjects (64 treated during 2019 and 94 during 2017) with high-risk non-muscle invasive bladder cancer and treated with a combination of Transurethral bladder resection (TURB) followed by adjuvant intravesical instillation with BCG in a tertiary hospital in Spain. Basal characteristics of both groups were analyzed. Times to event of interest (relapse; including recurrence and/or progression) were estimated with Kaplan-Meier survival analysis. Disease-free survival rates were analyzed using a multivariable Cox regression model of proportional hazards. RESULTS: Median follow-up in the 2019 sample was 24 months and 50 months in the 2017 group with a median number of instillations of 8 and 12 respectively. Median time to relapse of 285 days (145-448) during 2019 and 382 days (215-567) in 2017 were observed (logRank p = 0.025). Further multivariable analysis revealed a proportional hazard ratio (HR) for disease-free survival rate of 1.87 (95% CI: 1.04-3.37 p = 0.036). No statistically significant differences in tumoral relapse characteristics were observed. CONCLUSION: BCG shortage and subsequent reduced-dose schemes used for intravesical instillation due to limited availability, increase early tumoral relapse rates. These findings are consistent with available evidence, showing the need for full-dose BCG courses.

Effect of hip hemiarthroplasty dislocation on mortality after hip fracture surgery / Efecto de la luxación de la prótesis parcial de cadera en la mortalidad tras la cirugía de fractura de cadera

Introduction: Hip arthroplasty is the treatment of choice for displaced femoral neck fractures among the older population. The hip prosthesis dislocation is one of the most pointed potential complications after hip arthroplasty, but there is a lack of updated information on the effect of dislocation on the survival of older hip fracture patients so treated by hip hemiarthroplasty. We aim to evaluate the standalone effect of hip prosthesis dislocation after hip fracture hemiarthroplasty on patients’ survival outcomes. Materials and methods: We conducted a retrospective multicenter study, including 6631 femoral neck fracture patients over 65 surgically treated by hemiarthroplasty. We made follow-up cut-offs 30-days, 6 weeks, 90-days, and one year after hospital discharge determining hip dislocation rate and patients’ survival. Results: The women population represented 78.7%, and the mean age of the population was 85.2±6.7 years. Hip prosthesis dislocation incidence was 1.9% in the first 90-days after discharge, representing 91.54% of primary dislocations yearly noted. We reported statistically significant increased mortality rates of patients presenting at least one hip prosthesis dislocation event (from 16.0% to 24.6% at 90-day after discharge, and 29.5% to 44.7% at one year), and also significantly decreasing patient survival function at 90-day (p=0.016) and one-year follow-up (p<0.001). The recurrent dislocation events (26.15%) showed even higher mortality rates (up to 60.6%, p<0.001). The multivariate Cox regression model determined that prosthesis dislocation was the only significant variable (p=0.035) affecting patient survival, increasing the risk of dying before one year of follow-up by 2.7 times. Discussion: Our study stands for the standalone hip prosthesis dislocation entailing a higher risk of death after hip fracture hemiarthroplasty in the older population.(AU)

Introducción: La artroplastia de cadera es el tratamiento de elección para las fracturas desplazadas del cuello de fémur en la población de edad avanzada. La luxación de la prótesis de cadera es una de las complicaciones potenciales tras la artroplastia de cadera, pero falta información actualizada sobre el efecto de la luxación en la supervivencia de los pacientes mayores con fractura de cadera tratados mediante hemiartroplastia de cadera. Nuestro objetivo es evaluar el efecto de la luxación de la prótesis de cadera (hemiartroplastia) como factor aislado, en la función de supervivencia de los pacientes. Materiales y métodos: Realizamos un estudio multicéntrico retrospectivo, que incluyó a 6.631 pacientes mayores de 65 años con fractura de cuello de fémur tratados quirúrgicamente mediante hemiartroplastia. Se realizaron cortes de seguimiento a los 30 días, 6 semanas, 90 días y un año del alta hospitalaria, determinando la tasa de luxación de cadera y la supervivencia de los pacientes. Resultados: La población femenina representó el 78,7%, y la edad media de la población fue de 85,2±6,7 años. La incidencia de luxación de la prótesis de cadera fue del 1,9% en los primeros 90 días tras el alta, lo que representa el 91,54% de las luxaciones primarias observadas anualmente. Se registró un aumento estadísticamente significativo de las tasas de mortalidad de los pacientes que presentaban al menos un evento de luxación de la prótesis de cadera (del 16,0 al 24,6% a los 90 días del alta, y del 29,5 al 44,7% al año), y también una disminución significativa de la función de supervivencia de los pacientes a los 90 días (p=0,016) y al año de seguimiento (p<0,001). Los eventos de luxación recurrente (26,15%) mostraron tasas de mortalidad aún más altas (hasta el 60,6%, p<0,001). El modelo multivariante de regresión de Cox determinó que la luxación de la prótesis de cadera es la única variable significativa (p=0,035) que afecta a la...(AU)

[Artículo traducido] Efecto de la luxación de la prótesis parcial de cadera en la mortalidad tras la cirugía de fractura de cadera / Effect of hip hemiarthroplasty dislocation on mortality after hip fracture surgery

Introducción: La artroplastia de cadera es el tratamiento de elección para las fracturas desplazadas del cuello de fémur en la población de edad avanzada. La luxación de la prótesis de cadera es una de las complicaciones potenciales tras la artroplastia de cadera, pero falta información actualizada sobre el efecto de la luxación en la supervivencia de los pacientes mayores con fractura de cadera tratados mediante hemiartroplastia de cadera. Nuestro objetivo es evaluar el efecto de la luxación de la prótesis de cadera (hemiartroplastia) como factor aislado, en la función de supervivencia de los pacientes. Materiales y métodos: Realizamos un estudio multicéntrico retrospectivo, que incluyó a 6.631 pacientes mayores de 65 años con fractura de cuello de fémur tratados quirúrgicamente mediante hemiartroplastia. Se realizaron cortes de seguimiento a los 30 días, 6 semanas, 90 días y un año del alta hospitalaria, determinando la tasa de luxación de cadera y la supervivencia de los pacientes. Resultados: La población femenina representó el 78,7%, y la edad media de la población fue de 85,2±6,7 años. La incidencia de luxación de la prótesis de cadera fue del 1,9% en los primeros 90 días tras el alta, lo que representa el 91,54% de las luxaciones primarias observadas anualmente. Se registró un aumento estadísticamente significativo de las tasas de mortalidad de los pacientes que presentaban al menos un evento de luxación de la prótesis de cadera (del 16,0 al 24,6% a los 90 días del alta, y del 29,5 al 44,7% al año), y también una disminución significativa de la función de supervivencia de los pacientes a los 90 días (p=0,016) y al año de seguimiento (p<0,001). Los eventos de luxación recurrente (26,15%) mostraron tasas de mortalidad aún más altas (hasta el 60,6%, p<0,001). El modelo multivariante de regresión de Cox determinó que la luxación de la prótesis de cadera es la única variable significativa (p=0,035) que afecta a la...(AU)

Introduction: Hip arthroplasty is the treatment of choice for displaced femoral neck fractures among the older population. The hip prosthesis dislocation is one of the most pointed potential complications after hip arthroplasty, but there is a lack of updated information on the effect of dislocation on the survival of older hip fracture patients so treated by hip hemiarthroplasty. We aim to evaluate the standalone effect of hip prosthesis dislocation after hip fracture hemiarthroplasty on patients’ survival outcomes. Materials and methods: We conducted a retrospective multicenter study, including 6631 femoral neck fracture patients over 65 surgically treated by hemiarthroplasty. We made follow-up cut-offs 30-days, 6 weeks, 90-days, and one year after hospital discharge determining hip dislocation rate and patients’ survival. Results: The women population represented 78.7%, and the mean age of the population was 85.2±6.7 years. Hip prosthesis dislocation incidence was 1.9% in the first 90-days after discharge, representing 91.54% of primary dislocations yearly noted. We reported statistically significant increased mortality rates of patients presenting at least one hip prosthesis dislocation event (from 16.0% to 24.6% at 90-day after discharge, and 29.5% to 44.7% at one year), and also significantly decreasing patient survival function at 90-day (p=0.016) and one-year follow-up (p<0.001). The recurrent dislocation events (26.15%) showed even higher mortality rates (up to 60.6%, p<0.001). The multivariate Cox regression model determined that prosthesis dislocation was the only significant variable (p=0.035) affecting patient survival, increasing the risk of dying before one year of follow-up by 2.7 times. Discussion: Our study stands for the standalone hip prosthesis dislocation entailing a higher risk of death after hip fracture hemiarthroplasty in the older population.(AU)

[Translated article] Analysis of the demand of care from Primary Care to Traumatology: Proposals for the improvement of the continuous care.

OBJECTIVE: To analyse referrals from Primary Care consultation to Orthopaedic Surgery reference department. As a secondary objective, to establish 2 referral scenarios in order to determine the impact of variability on referral. MATERIAL AND METHODS: Cross-sectional observational study, analyzing referrals from Primary Care to Orthopaedic Surgery during the first half of the years 2018, 2019, and 2021. The number of referrals issued by each doctor and each Primary Care Healthcare Center was examined, according to the classification of the different Basic Healthcare Zones. RESULTS: There is great variability in the number of referrals, both according to the type of Basic Healthcare Zone and by each Primary Care facultative. The referral ratios behaved uniformly over time (p<0.001). Due to a large number of referrals, 2 scenarios have been constructed: In the first scenario, the referral ratio would be in the middle of the referral rate spectrum. In the second scenario, the lowest referral ratios recorded have been taken as a reference. The reduction of variability in the 2 scenarios assumed provides a significant reduction in the demand for care. CONCLUSION: Reducing variability would have a beneficial effect on the capacity of the Orthopaedic Surgery service to provide care.

Effect of hip hemiarthroplasty dislocation on mortality after hip fracture surgery. / [Artículo traducido] Efecto de la luxación de la prótesis parcial de cadera en la mortalidad tras la cirugía de fractura de cadera.

INTRODUCTION: Hip arthroplasty is the treatment of choice for displaced femoral neck fractures among the older population. The hip prosthesis dislocation is one of the most pointed potential complications after hip arthroplasty, but there is a lack of updated information on the effect of dislocation on the survival of older hip fracture patients so treated by hip hemiarthroplasty. We aim to evaluate the standalone effect of hip prosthesis dislocation after hip fracture hemiarthroplasty on patients' survival outcomes. MATERIALS AND METHODS: We conducted a retrospective multicenter study, including 6631 femoral neck fracture patients over 65 surgically treated by hemiarthroplasty. We made follow-up cut-offs 30-days, 6 weeks, 90-days, and one year after hospital discharge determining hip dislocation rate and patients' survival. RESULTS: The women population represented 78.7%, and the mean age of the population was 85.2 ± 6.7 years. Hip prosthesis dislocation incidence was 1.9% in the first 90-days after discharge, representing 91.54% of primary dislocations yearly noted. We reported statistically significant increased mortality rates of patients presenting at least one hip prosthesis dislocation event (from 16.0% to 24.6% at 90-day after discharge, and 29.5% to 44.7% at one year), and also significantly decreasing patient survival function at 90-day (P = .016) and one-year follow-up (P < .001). The recurrent dislocation events (26.15%) showed even higher mortality rates (up to 60.6%, p < .001). The multivariate Cox regression model determined that prosthesis dislocation was the only significant variable (P = .035) affecting patient survival, increasing the risk of dying before one year of follow-up by 2.7 times. DISCUSSION: Our study stands for the standalone hip prosthesis dislocation entailing a higher risk of death after hip fracture hemiarthroplasty in the older population.

Analysis of the demand of care from Primary Care to Traumatology: Proposals for the improvement of the continuous care. / Análisis de la demanda asistencial desde atención primaria a traumatología: propuestas para la mejora del continuo asistencial.

OBJECTIVE: To analyze referrals from Primary Care consultation to Orthopaedic Surgery reference department. As a secondary objective, to establish 2referral scenarios in order to determine the impact of variability on referral. MATERIAL AND METHODS: Cross-sectional observational study, analyzing referrals from Primary Care to Orthopaedic Surgery during the first half of the years 2018, 2019, and 2021. The number of referrals issued by each doctor and each Primary Care Healthcare Center was examined, according to the classification of the different Basic Healthcare Zones. RESULTS: There is great variability in the number of referrals, both according to the type of Basic Healthcare Zone and by each Primary Care facultative. The referral ratios behaved uniformly over time (P<0.001). Due to a large number of referrals, 2scenarios have been constructed: In the first scenario, the referral ratio would be in the middle of the referral rate spectrum. In the second scenario, the lowest referral ratios recorded have been taken as a reference. The reduction of variability in the 2scenarios assumed provides a significant reduction in the demand for care. CONCLUSION: Reducing variability would have a beneficial effect on the capacity of the Orthopaedic Surgery service to provide care.

Effect of hip hemiarthroplasty dislocation on mortality after hip fracture surgery.

INTRODUCTION: Hip arthroplasty is the treatment of choice for displaced femoral neck fractures among the older population. The hip prosthesis dislocation is one of the most pointed potential complications after hip arthroplasty, but there is a lack of updated information on the effect of dislocation on the survival of older hip fracture patients so treated by hip hemiarthroplasty. We aim to evaluate the standalone effect of hip prosthesis dislocation after hip fracture hemiarthroplasty on patients' survival outcomes. MATERIALS AND METHODS: We conducted a retrospective multicenter study, including 6631 femoral neck fracture patients over 65 surgically treated by hemiarthroplasty. We made follow-up cut-offs 30-days, 6 weeks, 90-days, and one year after hospital discharge determining hip dislocation rate and patients' survival. RESULTS: The women population represented 78.7%, and the mean age of the population was 85.2±6.7 years. Hip prosthesis dislocation incidence was 1.9% in the first 90-days after discharge, representing 91.54% of primary dislocations yearly noted. We reported statistically significant increased mortality rates of patients presenting at least one hip prosthesis dislocation event (from 16.0% to 24.6% at 90-day after discharge, and 29.5% to 44.7% at one year), and also significantly decreasing patient survival function at 90-day (p=0.016) and one-year follow-up (p<0.001). The recurrent dislocation events (26.15%) showed even higher mortality rates (up to 60.6%, p<0.001). The multivariate Cox regression model determined that prosthesis dislocation was the only significant variable (p=0.035) affecting patient survival, increasing the risk of dying before one year of follow-up by 2.7 times. DISCUSSION: Our study stands for the standalone hip prosthesis dislocation entailing a higher risk of death after hip fracture hemiarthroplasty in the older population.

Cross-cultural invariance of the Spanish version of the COVID-19 Assessment Scorecard to measure the perception of government actions against COVID-19 in Latin America

Abstract Objectives The present study aimed to evaluate the measurement invariance of a general measure of the perception of governmental responses to COVID--19 (COVID-SCORE-10) in the general population of 13 Latin American countries. Methods A total of 5780 individuals from 13 Latin American and Caribbean countries selected by non-probabilistic snowball sampling participated. A confirmatory factor analysis was performed and the alignment method was used to evaluate invariance. Additionally, a graded response model was used for the assessment of item characteristics. Results The results indicate that there is approximate measurement invariance of the COVID-SCORE-10 among the participating countries. Furthermore, IRT results suggest that the COVID-SCORE-10 measures with good psychometric ability a broad spectrum of the construct assessed, especially around average levels. Comparison of COVID-SCORE-10 scores indicated that participants from Cuba, Uruguay and El Salvador had the most positive perceptions of government actions to address the pandemic. Thus, the underlying construct of perception of government actions was equivalent in all countries. Conclusion The results show the importance of initially establishing the fundamental measurement properties and MI before inferring the cross-cultural universality of the construct to be measured.