Vacuum-assisted wound closure and mesh-mediated fascial traction for temporary closure in open abdomen: A single-arm meta-analysis.

INTRODUCTION: Open abdomen (OA) therapy is used in the management of patients who require surgery for severe abdominal conditions. This meta-analysis aims to evaluate the VAWCM technique regarding short and long-term outcomes. METHODS: PubMed, Embase, and Cochrane Central were systematically searched for studies that analyzed VAWCM therapy in OA. Primary outcomes were the complete fascial closure rate and mean duration of OA treatment. Statistical analyses were performed using R statistical software. RESULTS: Seven studies comprising 535 patients were included. We found a complete fascial closure rate of 77.3 per 100 patients (80.1%; 95% CI 59.6-88.7; I2 = 76%), with an overall mortality of 30.3 per 100 (33.5%; 95% CI 9.3-19.4; I2 = 78%). The pooled mean duration of OA treatment was 14.6 days (95% CI 10.7-18.6; I2 = 93%), while the mean length of hospital stay was 43.3 days (95% CI 21.2-65.3; I2 = 96%). As additional outcomes, we found an enteroatmospheric fistula rate of 5.6 per 100 patients (5.4%; 95% CI 2.3-13.3; I2 = 45%) and incisional hernia rate of 34.7 per 100 (34.6%; 95% CI 28.9-41.1; I2 = 0%). The subgroup analysis of mesh materials (polypropylene or polyglactin) showed a higher complete fascial closure rate for the polyglactin (89.1% vs. 66.6%; p = 0.02). CONCLUSION: Our findings showed that VAWCM is a viable option for OA treatment, successfully reaching complete fascial closure, with a low duration of the technique, even though it presented a high heterogeneity between the studies.

Choroidal Perfusion Changes After Vitrectomy for Myopic Traction Maculopathy.

BACKGROUND: The choroidal vasculature supplies the outer retina and is altered in many retinal diseases, including myopic traction maculopathy (MTM). Choroid health is typically assessed by measuring the choroidal thickness; however, this method has substantial limitations. The choroidal vascularity index (CVI) was recently introduced to provide quantitative information on the vascular flow in the choroid. This index has been evaluated in a wide range of diseases but has not been extensively used to characterize MTM. AIM: This study aimed to investigate the CVI across different stages of MTM and the influence of macular surgery on choroidal perfusion markers in different surgically resolved MTM stages. METHODS: Eighteen healthy myopic eyes in the control group and forty-six MTM eyes in the surgical group were evaluated using enhanced optical coherence tomography (OCT) imaging. Binarized OCT images were processed to obtain the luminal choroidal area (LCA) and stromal choroidal area (SCA), which were used to calculate CVI in the form of a percentage ratio. CVI data were collected at baseline, one and four months postoperatively, and at the final clinical visit. MTM eyes were divided into four stages based on disease severity. The choriocapillaris flow area (CFA) and central subfield thickness (CSFT) were measured along side the CVI. RESULTS: No significant differences were observed between the two groups at baseline, except for visual acuity (p < 0.0001). Surgery significantly improved vision at all postoperative time points (p < 0.0001). At baseline, there were no significant differences in CVI, CFA, or CSFT scores between the control and surgical groups. However, all three measurements were lower at the final visit in the surgical group (p ≤0.0001). No significant differences were found in any of the parameters among the four stages of MTM (p > 0.05). Ultimately, correlation and multivariate linear regression analyses did not reveal any significant association between CVI and visual acuity. CONCLUSIONS: This study did not find significant preoperative differences in CVI between healthy myopic eyes and eyes with MTM. However, the postoperative CVI and CFA values were significantly lower than those of the control eyes. Thus, CVI may not be a good biomarker for surgical outcomes, as the correlation between CVI and visual acuity was not statistically significant.The CVI and CFA decreased after surgery, providing evidence of choroidal changes after surgical management.

Cirurgia de aproveitamento de dente incluso associada a odontoma: relato de caso / Surgery to use an impacted tooth associated with odontoma: case report / Cirugía para uso de diente incluido asociado a odontoma: reporte de caso

Introdução: Odontoma é o tipo mais comum de tumor odontogênico, contudo são lesões assintomáticas, de crescimento lento e indolor, descobertos geralmente em consultas de rotina, e que muito comumente são causadores de impactação dentária. Esse trabalho tem por objetivo relatar o caso clínico de uma criança que apresentava um odontoma composto na pré-maxila, ocasionando a impactação de seu incisivo central e comprometimento estético. Relato de caso: Paciente de 12 anos, em preparo para tratamento ortodôntico, no qual na etapa de exames de imagem, foi percebido um odontoma composto na região anterior da maxila o qual impedia a irrupção do dente 21, onde para que se conseguisse o melhor aproveitamento estético e funcional, foi indicado a remoção do tumor com 43 estruturas semelhantes a dentes e o tracionamento do dente associado. Conclusão: O tratamento do odontoma não costuma ter recidivas, permitindo o aproveitamento de possíveis dentes associados e manutenção de estruturas nobres adjacentes. Possibilitando também, o tracionamento do dente impactado ao arco dental, restituindo saúde e estética... (AU)

Introduction: Odontoma is the most common type of odontogenic tumor. They are asymptomatic, slow-growing lesions of unknown etiopathogenesis. They have a density similar to teeth, surrounded by a thin radiolucent halo. Objective: To report a clinical case of traction surgery of an impacted tooth associated with compound odontoma, and a brief literature review. Case report: Patient presented composite odontoma in the anterior region of the maxilla, preventing the eruption of tooth 21. The lesion was noticed during the preparation of the orthodontic treatment and for the success of such procedure, the treatment consisted of the excision of the lesion composed of 43 similar structures to teeth and the preparation of the traction of the maxillary central incisor. Conclusion: The removal of the odontoma was extremely relevant, with this, the impacted tooth was exposed, allowing the placement of the orthodontic button for its traction. Positioning the missing tooth in the dental arch, restoring health and aesthetics... (AU)

Introducción: El odontoma es el tipo más común de tumor odontogénico. Son lesiones asintomáticas, de crecimiento lento y de etiopatogenia desconocida. Tienen una densidad similar a los dientes, rodeados de un fino halo radiotransparente. Objetivo: Reportar un caso clínico de cirugía de tracción de un diente retenido asociado a odontoma compuesto, y una breve revisión de la literatura. Reporte de caso: Paciente presentó odontoma compuesto en la región anterior del maxilar, impidiendo la erupción del diente 21. La lesión fue notada durante la preparación del tratamiento de ortodoncia y para el éxito de dicho procedimiento, el tratamiento consistió en la escisión de la lesión. compuesto por 43 estructuras similares a los dientes y la preparación de la tracción del incisivo central maxilar. Conclusión: La remoción del odontoma fue de suma relevancia, con esto se logró exponer el diente impactado, permitiendo la colocación del botón de ortodoncia para su tracción. Posicionamiento del diente faltante en la arcada dentaria, restaurando la salud y la estética... (AU)

Traction Alopecia.

This Patient Page describes the symptoms, diagnosis, and treatment of traction alopecia.

Incidence and time until the first traction or obstruction of the nasoenteral tube in hospitalized adults.

OBJECTIVE: To determine incidence and time until first traction or obstruction of nasoenteral tube in hospitalized adults. METHODS: Prospective double cohort study that included 494 adults who were users of nasoenteral tubes as inpatients in two clinical units and two surgical units in a teaching hospital. The occurrence of tube tractions and obstructions was monitored daily between 2017 and 2019. The Kaplan-Meier method was used to estimate time until the first event. RESULTS: Tube traction occurred in 33% of the sample, and the incidence of the event was higher on the first five days of tube use. Tube obstruction incidence was 3.4% and grew as tube use time increased. CONCLUSION: Traction incidence was higher at the beginning of the period of use, whereas obstruction incidence grew as tube use time increased.

The Efficacy of VAMMFT Compared to "Bogota Bag" in Achieving Sheath Closure Following Temporary Abdominal Closure at Index Laparotomy for Trauma.

INTRODUCTION: The open abdomen (OA) is a necessary component of damage control surgery and closure is often challenging. Our aim was to review our ten-year experience with OA in trauma patients and to compare the success of a dual closure technique termed vacuum-assisted, mesh-mediated fascial traction (VAMMFT) to an exclusively Bogota Bag (BB) approach. METHODS: A retrospective analysis was performed using the HEMR database from 2012 to 2022, comparing demographics, mechanism of injury, admission vitals and biochemistry between patients with BB and VAMMFT applications. Rate of secondary abdominal closure and complications were assessed in both groups. Logistic regression was used to find predictors of closure. RESULTS: OA was required by 348 patients at index laparotomy. Of these, 133 (38.2%) were managed with VAMMFT and 215 (61.8%) exclusively with a BB. There were no statistical differences between the BB and VAMMFT groups in terms of demographics, injuries, admission vitals and biochemistry. The VAMMFT group achieved a closure rate of 73% compared to 54.9% in the BB group (OR of 2.2 [1.4-3.7]). There was no significant difference in fistulation rate between the two groups (p = 0.103). Length of hospital stay was 30 versus 17 days in the VAMMFT and BB groups, respectively (OR 1.41 [1.30-1.54]). There were no independent predictors of closure identified in the VAMMFT group. Older patients were less likely to achieve closure when BB was used (OR 0.97 [0.95-0.99]). VAMMFT failure was commonly due to lack of stock (39%) and protocol violations (33%). CONCLUSION: The VAMMFT approach to the OA is efficacious and safe. VAMMFT achieves a much higher rate of secondary closure than BB alone with a low rate of enteric fistula formation.

Evaluation of outpatient halo-gravity traction in patients with severe scoliosis: development of a monitoring device.

INTRODUCTION: Patients with severe spinal deformities represent a major clinical and surgical challenge. Halo-gravity traction (HGT) is a traditional method to correct the deformity prior to surgery. Typically, children undergoing HGT remain in the hospital until surgery. Therefore, it has been suggested to treat these children at lower level healthcare centers or even at home. The aim of this study was to develop a tool to assess patient adherence to HGT together with a program to analyze traction results. MATERIALS AND METHODS: An original recording system was designed with an Arduino Nano®. The data extracted from the memory card were compiled into a text file and then analyzed with the MatLab R2018a MathWorks®. RESULTS: Five patients receiving HGT for severe scoliosis were asked to use the device both in the wheelchair and in bed to evaluate its usefulness. CONCLUSIONS: A device was developed to monitor the use of HGT at home. The device provides information on the time of HGT use and the traction weight placed throughout the day, as well as on the correct functioning of the system in bed and in the wheelchair.

Complications of prolonged halo-gravitational tractional in spinal deformity surgeries / Complicações da tração halo-gravitacional prolongada em cirurgias de deformidade da coluna / Complicaciones de la tracción halo-gravitacional prolongada en cirugías de deformidad de la columna

ABSTRACT Objective: Spinal traction by a cranial halo is a method with more than half a century of application, presenting the possibility of gradual correction of deformities while the patient is awake, also improving respiratory and nutritional patterns. This study aimed to evaluate the complications of pins and traction during their use in treating severe spinal deformities. Methods: We evaluated 27 patients undergoing surgical treatment using halo-gravitational traction pre or interoperatively between 2014 and 2020. Inclusion criteria were the presence of severe deformity (>100º) in the coronal and/or sagittal plane and traction for at least seven days. Two subgroups were identified: patients presenting only severe coronal deformity (Group 1) and patients with severe deformity in the sagittal plane accompanied by coronal deformity (Group 2). Clinical and radiological data were analyzed retrospectively, evaluating the variables: age, sex, weight, height, etiological diagnosis, number of pins, traction time, sagittal and coronal Cobb angle before and after traction, and complications related to pins and traction. Results: Age and weight showed a significant correlation with the occurrence of complications related to the pins (p=0.007; p<0.001), as well as the congenital etiology of deformity (p=0.001), and those patients in group 2 (p=0.006). There was no significant correlation between the variables studied and the occurrence of neurological complications. Conclusion: Halo-gravitational traction is an important adjunctive method in treating severe spinal deformities. Despite having a considerable complication rate, there were no serious events. Level of evidence IV; Case series.

Resumo: Objetivo: A tração espinhal por halo craniano é um método com mais de meio século de aplicação, apresentando a possibilidade de correção gradual de deformidades com o paciente desperto, além da melhoria do padrão respiratório e nutricional. Este estudo teve como objetivo avaliar as complicações relacionadas aos pinos e à tração durante o seu uso no tratamento de deformidades graves. Métodos: Foram avaliados 27 pacientes submetidos a tratamento cirúrgico com uso de tração halo-gravitacional pré ou inter-operatória, entre 2014 e 2020. Os critérios de inclusão foram a presença de deformidade grave (>100º) coronal e/ou sagital, e duração mínima de 7 dias de tração. Dois subgrupos foram identificados: pacientes com deformidade grave coronal (Grupo 1) e pacientes com deformidade grave sagital acompanhada de deformidade coronal (Grupo 2). Os dados clínicos e radiológicos foram analisados retrospectivamente, incorporando as variáveis: idade, sexo, peso, altura, diagnóstico etiológico, número de pinos, tempo de tração, ângulo de Cobb sagital e coronal pré e pós tração, complicações relacionadas aos pinos e à tração. Resultados: Idade e peso demonstraram correlação significativa com a ocorrência de complicações relacionadas aos pinos (p=0,007; p<0,001), assim como etiologia congênita (p=0,001), e os pacientes incluídos no grupo 2 (p=0,006). Não houve correlação significativa com a ocorrência de complicações neurológicas. Conclusão: A tração halo-gravitacional é um importante método adjuvante no tratamento de deformidades graves da coluna vertebral. Apesar de ter apresentado taxa de complicações considerável, não ocorreram eventos graves. Nível de evidência IV; Série de casos.

Resumen: Objetivo: La tracción espinal por halo craneal es un método con más de medio siglo de aplicación, presentando la posibilidad de corrección gradual de las curvas con el paciente despierto, mejorando el patrón respiratorio y nutricional. Este estudio evaluó las complicaciones relacionadas con los tornillos y la tracción durante el tratamiento de deformidades espinales graves. Métodos: Se evaluó a 27 pacientes sometidos a cirugía con uso de tracción halo-gravitatoria pre o inter quirúrgica, entre 2014 y 2020. Los criterios de inclusión fueron la presencia de deformidad severa (>100º) en el plano coronal y/o sagital y tiempo mínimo de tracción de 7 días. Dos subgrupos fueron identificados: pacientes con deformidad severa en el plano coronal (Grupo 1), y pacientes con deformidad sagital severa acompañada de deformidad coronal (Grupo 2). Los datos clínicos y radiológicos se analizaron retrospectivamente, evaluando edad, sexo, peso, talla, diagnóstico etiológico, número de tornillos, tiempo de tracción, ángulo de Cobb sagital y coronal pre y post tracción, complicaciones relacionadas con los tornillos y tracción. Resultados: Se demostró que la edad y el peso eran factores significativamente correlacionados con las complicaciones de los tornillos (p=0,007; p<0,001), así como la etiología congénita (p=0,001), y los pacientes incluidos en el grupo 2 (p=0,006). No hubo correlación significativa entre las variables estudiadas y complicaciones neurológicas. Conclusión: La tracción halo-gravitacional es un método adyuvante importante en el tratamiento de deformidades espinales severas. A pesar de haber presentado una tasa de complicaciones considerable, no hubo eventos graves. Nivel de evidencia IV; Series de casos.

Neuromuscular lordoscoliosis: an unusual response to post-operative halo-gravity traction.

PURPOSE: To report the results of prolonged post-operative halo-gravity traction in a patient in whom the surgery had to be interrupted unexpectedly and for whom subsequently specific clinical circumstances contraindicated completion of the surgical procedure. METHODS: The patient was a 15-year-old male with severe cervico-dorsolumbar lordoscoliosis who was being studied for associated diffuse axonal injury. He performed halo-gravity traction for 12 weeks. Subsequent surgical management consisted of occipito-lumbar posterior instrumented fusion. During the surgical approach, electrocardiographic changes with hemodynamic decompensation were detected that did not improve with anesthetic reanimation. The intervention was stopped, the surgical wound was closed, and the patient was transferred to the intensive care unit (ICU). It was decided that a revision surgery with the aim to continue with the previous strategy would imply a high risk of perioperative morbidity and mortality. RESULTS: Orthopedic management was decided upon consisting of continued halo-gravity traction with wheelchair modification at home, which was extended to a period of 12 months because of the good results obtained in terms of cervicothoracic realignment. Two years after halo-gravity discontinuation, clinical and radiographic occipito-cervical alignment was good and the patient conserved certain occipito-cervical range of motion and had the capacity of maintaining a horizontal gaze. CONCLUSION: We considered the outcome extraordinary and relevant in this complex and unusual patient. A longer follow-up will provide more data regarding the final outcome of this treatment.

Effects of traction therapy on atlantoaxial joint dislocation-induced cervical vertigo.

Cervical vertigo is a common complication of atlantoaxial joint dislocation. However, there is no consensus on the effects of different therapies on the recovery of the patients suffering cervical vertigo. The objective of this randomized controlled trial was to investigate the effect of traction therapy on reducing cervical vertigo induced by atlantoaxial joint dislocation. A total of 96 patients were randomized to receive traction therapy or traditional therapy for two weeks. The overall clinical efficacy was measured based on the 30-point cervical vertigo symptom and function evaluation form. The therapeutic effects were also evaluated based on lateral atlantodental space (LADS), vertigo scale, neck and shoulder pain scale, headache scale, daily life and work scale, psychosocial adaptation scale, and quality of life. Compared with the traditional therapy group, the traction group demonstrated markedly higher overall clinical efficacy (P=0.038). Both the traction therapy group and the traditional therapy group showed significant decrease in LADS (P<0.001), but the traction therapy group had a greater reduction of LAD compared with the traditional group (P<0.01). Traction therapy consistently led to significantly greater relief of cervical vertigo symptoms, including dizziness, neck and shoulder pain, headache, inconvenience in daily living and work activities, impaired psychosocial adaptation, while improving quality of life. The efficacy of traction therapy for cervical vertigo surpasses that of traditional therapy, suggesting that traction therapy is potentially more clinically useful in treating these patients.

Reproducibility of dynamometers in handrail format in evaluating handgrip strength and traction in young and older adults.

BACKGROUND: The aim of the present study was twofold: (1) to assess the reproducibility of two dynamometers in handrail format to measure handgrip strength and traction force in the young and older adults; (2) to compare the handgrip strength and traction of these two populations. APPROACH: Twenty-four volunteers (12 older adults and 12 young adults) performed a functional effort related to handgrip strength and traction force during stair climbing. The participants were evaluated two times (separated by one week) using a coupled dynamometer that quantifies the muscular effort in grip and traction simultaneously to simulate stair climbing in bus service. RESULTS: The young adults performed significantly better (p < 0.04) than the older adults in both handgrip and traction efforts (medium to large effect size), with excellent reliability (Intraclass Coefficient Correlation > 0.9) and low error of measure. The dynamometers were able to discriminate the two population groups (sensitive validity) and showed excellent reproducibility estimates for handgrip and traction strength in both young and older adults. CONCLUSION: These instruments could be useful in assessing handgrip and traction strength needed to climb stairs, especially for the older adults, who normally have more difficulty performing this task.

Pars plana vitrectomy and visual stimulation for treatment of vitreomacular traction secondary to toxoplasmosis retinochoroiditis in a 5-year-old child / Vitrectomia via pars plana e estimulação visual para tratamento da tração vitreomacular secundária à retinocoroidite por toxoplasmose em criança de 5 anos

ABSTRACT Objective: A unusual case of ocular toxoplasmosis with significant vitreomacular traction is reported. The patient improved significantly following pars plana vitrectomy combined with visual stimulation and occlusion therapy. Methods: The case of a 5-year-old girl with significant unilateral vision loss associated with vitreous condensation and macular traction is described. Results: Pars plana vitrectomy was carried out for vitreomacular traction release. This was followed by visual stimulation and occlusion therapy. Significant improvement was observed. Conclusion: Despite structural damage, the combination of properly indicated surgery and amblyopia management strategies allowed the achievement of maximum vision goals in this case, suggesting structural damage may be associated with functional amblyopia.

RESUMO Objetivo: Relata-se um caso de apresentação atípica de toxoplasmose ocular, com importante tração vitreomacular. A paciente apresentou melhora significativa após vitrectomia via pars plana, com estimulação visual e oclusão. Métodos: Descreve-se o caso de uma menina de 5 anos, com importante perda de visão unilateral associada à condensação vítrea e à tração macular. Resultados: Foi realizada vitrectomia via pars plana para alívio da tração vitreomacular, seguida de estimulação visual e oclusão. Foi observada melhora significativa. Conclusão: Apesar dos danos estruturais, a combinação de cirurgia bem indicada com estratégias de tratamento da ambliopia permitiu alcançar o máximo do potencial visual nesta paciente, sugerindo que os danos estruturais podem estar associados à ambliopia funcional.

Traumatic Atlantoaxial Rotatory Subluxation in Adult: Case Report

Traumatic atlantoaxial rotatory subluxation (AARS) is generally found in pediatric patients, rarely found in adults, being a life-threatening condition especially when early diagnosis is not possible, which can lead to severe late neurological deficits.We describe a 38-year-old patient, victim of physical aggression caused by strangulation attempt who developed AARS, an uncommontraumatic cause. During the hospital care, the early diagnosis allowed us to institute a conservative treatment, which made the case uncommon, since most of the time surgical treatment is imperative. With the patient awake and under analgesia, a closed reduction was performed that promoted immediate pain relief, followed by a prescription of wearing a Philadelphia-type collar for 8 weeks. During the follow-up, cervical spine radiographies demonstrated no subluxation after removing the cervical collar. The patient was asymptomatic after 6months of treatment. This case supports the importance of nonoperative management of AARS in selected cases.

Bezold jarisch reflex during halo-gravity traction: case report / Reflexo de bezold jarisch durante tração halo-craniana: relato de caso / Reflejo de bezold jarisch durante tracción halo-craneal: caso clínico

ABSTRACT Halo-gravity traction is an option that can be used in the treatment of severe spinal deformities. The author reports a complication not yet described in the literature in which rapid correction of the deformity triggered the Bezold Jarisch reflex. Level of evidence IV; Case Series.

RESUMO A tração halo-craniana é uma opção que pode ser utilizada no tratamento de deformidades severas da coluna vertebral. O autor relata uma complicação, ainda não descrita na literatura, em que a rápida correção da deformidade desencadeou o reflexo de Bezold Jarish. Nível de evidência IV; Série de Casos.

RESUMEN La tracción halo-craneal es una opción que puede ser usada para el tratamiento de deformidades severas de columna vertebral. El autor relata una complicación, aún no descrita en la literatura, en que la rápida corrección de la deformidad desencadenó el reflejo de Bezold Jarish. Nivel de evidencia IV; Serie de Casos.

Congenital Scoliosis of the Pediatric Cervical Spine: Characterization of a 17-Patient Operative Cohort.

BACKGROUND: Congenital cervical scoliosis is rare, and there is a paucity of literature describing surgical outcomes. We report surgical outcomes in a 17-patient cohort with surgical correction for congenital cervical scoliosis and identify risk factors associated with complications. METHODS: Data were retrospectively collected from a single-center cohort of 17 consecutive patients (9 boys, 8 girls) receiving surgical deformity correction for congenital cervical scoliosis. The mean age at surgery was 7.1±3.4 years with an average follow-up of 3.6±1.1 years. RESULTS: There were 24 operations performed on 17 patients, and 4 complications (17%) were reported in the series, including one each of pressure ulcer, asystole, vertebral artery injury, and pseudarthrosis. The mean preoperative major curve angle was 36±20 degrees, which improved to 24±14 degrees (P=0.02). The mean operative time was 8±2 hours with a mean estimated blood loss of 298±690 mL. Halo-gravity traction was used in 5 patients and 6 cases were staged with anterior/posterior procedures. CONCLUSIONS: Congenital scoliosis of the cervical spine is a complex process. The spinal deformity of this nature can be managed successfully with carefully planned and executed surgical correction. LEVEL OF EVIDENCE: Level IV-retrospective review.

Donkeys in transition: changing use in a changing world / Jumentos em transição: alterações do seu uso num mundo em mudança

Donkeys have a long history in the development of human societies. Typically referred to as a beast of burden, traditional uses for donkeys have included the transportation of goods and people, use in agricultural and forestry activities, to access water, and provide citizens in low- and middle-income countries a means of making an income for communities. However, the rise of mechanization, the development of modern farming techniques, and the increasing availability of motorized vehicles have led to donkeys and mules becoming redundant from traditional roles in many parts of the world. We provide examples of where donkeys have successfully transitioned from traditional roles to new, non-traditional roles in Europe and North America, and demonstrate that, although the roles and use of donkeys and mules are changing in a rapidly developing world, we can learn lessons from the past and apply them to current challenges. As the need for working equids declines in transport and agriculture, they still hold great value for recreational, therapeutic, and environmentally friendly methods of animal traction.(AU)

Os jumentos têm uma longa história no desenvolvimento das sociedades humanas. Normalmente referidos como bestas de carga, seus usos tradicionais incluem o transporte de pessoas e bens, atividades agrícolas e florestais, acesso a água, assim como oferecer uma forma de rendimento para comunidades em países de rendimento baixo e médio. No entanto, o aumento da mecanização, o desenvolvimento de técnicas agrícolas modernas e maior disponibilidade de veículos motorizados fizeram com que os jumentos e os muares se tornassem desnecessários nos seus papéis tradicionais em muitas partes do mundo. Neste artigo os autores fornecem exemplos onde os jumentos fizeram a transição, com sucesso, dos papéis tradicionais para novos papéis não tradicionais, tanto na Europa como na América do Norte; e demonstramos que, embora o papel e o uso de jumentos e muares estejam mudando num mundo em rápido desenvolvimento, podemos aprender lições com o passado e aplicá-las aos desafios atuais. À medida que diminui a necessidade de equídeos de trabalho no transporte e na agricultura, eles ainda têm grande valor no que toca a fins recreativos, terapêuticos e ecológicos no uso de tração animal.(AU)

Donkeys in transition: changing use in a changing world / Jumentos em transição: alterações do seu uso num mundo em mudança

Donkeys have a long history in the development of human societies. Typically referred to as a beast of burden, traditional uses for donkeys have included the transportation of goods and people, use in agricultural and forestry activities, to access water, and provide citizens in low- and middle-income countries a means of making an income for communities. However, the rise of mechanization, the development of modern farming techniques, and the increasing availability of motorized vehicles have led to donkeys and mules becoming redundant from traditional roles in many parts of the world. We provide examples of where donkeys have successfully transitioned from traditional roles to new, non-traditional roles in Europe and North America, and demonstrate that, although the roles and use of donkeys and mules are changing in a rapidly developing world, we can learn lessons from the past and apply them to current challenges. As the need for working equids declines in transport and agriculture, they still hold great value for recreational, therapeutic, and environmentally friendly methods of animal traction.(AU)

Os jumentos têm uma longa história no desenvolvimento das sociedades humanas. Normalmente referidos como bestas de carga, seus usos tradicionais incluem o transporte de pessoas e bens, atividades agrícolas e florestais, acesso a água, assim como oferecer uma forma de rendimento para comunidades em países de rendimento baixo e médio. No entanto, o aumento da mecanização, o desenvolvimento de técnicas agrícolas modernas e maior disponibilidade de veículos motorizados fizeram com que os jumentos e os muares se tornassem desnecessários nos seus papéis tradicionais em muitas partes do mundo. Neste artigo os autores fornecem exemplos onde os jumentos fizeram a transição, com sucesso, dos papéis tradicionais para novos papéis não tradicionais, tanto na Europa como na América do Norte; e demonstramos que, embora o papel e o uso de jumentos e muares estejam mudando num mundo em rápido desenvolvimento, podemos aprender lições com o passado e aplicá-las aos desafios atuais. À medida que diminui a necessidade de equídeos de trabalho no transporte e na agricultura, eles ainda têm grande valor no que toca a fins recreativos, terapêuticos e ecológicos no uso de tração animal.(AU)

Biomechanical Study of Different Femoral Fixation Devices in the Reconstruction of the Medial Patellofemoral Ligament in Porcine Knees / Estudo biomecânico de diferentes dispositivos de fixação femoral na reconstrução do ligamento patelofemoral medial em joelhos de suínos

Abstract Objective To evaluate different femoral fixation devices for medial patellofemoral ligament reconstruction and compare their effectiveness regarding fixation strength up to failure in porcine knees. Methods Thirty porcine knees were used, divided into three groups of 10 knees. The removed grafts were dissected from the extensor tendons of porcine feet. In each group, the graft was fixed to the femur with an interference screw, an anchor, or adductor tenodesis. The three methods were subjected to biomechanical tests using a universal Tensile testing machine at a speed of 20 mm/minute. Results The highest average linear resistance under lateral traction occurred in group 1, "screw fixation" (185.45 ± 41.22 N), followed by group 2, "anchor fixation" (152.97 ± 49, 43 N); the lower average was observed in group 3, "tenodesis fixation" (76.69 ± 18.90 N). According to the fixed error margin (5%), there was a significant difference between groups (p < 0.001); in addition, multiple comparison tests (between group pairs) also showed significant differences. Variability was small, since the variance coefficient was lower than 33.3%. Conclusion Interference screws in bone tunnels and mountable anchors fixation with high resistance wire are strong enough for femoral fixation in porcine medial patellofemoral ligament reconstruction. Adductor tenodesis, however, was deemed fragile for such purpose.

Resumo Objetivo Avaliar diferentes dispositivos de fixação femoral na reconstrução do ligamento patelofemoral medial para comparar sua eficácia quanto à força de fixação até a falha em joelhos suínos. Métodos Foram ensaiados 30 joelhos de suínos subdivididos em 3 grupos de 10 joelhos. Os enxertos retirados foram dissecados de tendões extensores das patas dos suínos. Cada grupo teve o enxerto fixado ao fêmur com parafuso de interferência, âncora, ou tenodese no tendão adutor. Os 3 métodos foram submetidos à testes biomecânicos utilizando uma máquina universal de ensaio de tração com uma velocidade de 20 mm/min. Resultados Verificamos que a média mais elevada da resistência linear sob tração lateral (185,45 ± 41,22 N) ocorreu no grupo 1: "fixação por parafuso," seguido do grupo 2: "fixação por âncora" (152,97 ± 49,43 N), e a média foi menor no grupo 3: "fixação por tenodese" (76,69 ± 18,90 N). Para a margem de erro fixada (5%), comprovou-se a diferença significativa entre os grupos (p < 0,001) e também através dos testes de comparações múltiplas (entre os pares de grupos) verificou-se a ocorrência de diferenças significativas. A variabilidade expressada por meio do coeficiente de variação mostrou-se reduzida, já que a referida medida foi inferior a 33,3%. Conclusão O uso de parafusos de interferência no túnel ósseo de joelhos porcinos é suficientemente forte para fixação femoral na reconstrução do ligamento patelofemoral medial, assim como a fixação com âncoras montáveis com fio de alta resistência. Entretanto, a tenodese no tendão adutor mostrou-se frágil para essa finalidade.