Study of Typical Functional Failure and Mechanical Properties of Non-absorbable Suture Anchor / 中国医疗器械杂志

OBJECTIVE@#To study the mechanical properties related to the typical functional failure modes of non-absorbable suture anchor in clinical use, and to support product design, development and verification.@*METHODS@#By retrieving the database of relevant adverse events, the typical functional failure modes of non-absorbable suture anchor were summarized, and the influencing factors of functional failure were further analyzed by studying the mechanical properties related to functional failure. The publicly available test data was retrieved for verification and provided reference for the researchers.@*RESULTS@#The typical functional failure modes of non-absorbable suture anchor include anchor failure, suture failure, fix loosening, inserter failure, which are related to the mechanical properties of products, such as screw-in torque and break torque of screw-in anchors, insertion force of knock-in anchors, suture strength, pull-out force before and after system fatigue test and elongation of sutures after fatigue test.@*CONCLUSIONS@#Enterprises should pay attention to improving the mechanical performance level of products through material, structural design and the suture weaving process to ensure the safety and effectiveness of products.

Can disordered eating behaviors reduce maximum oxygen consumption in road cyclists? / Comportamentos de risco para os transtornos alimentares pode reduzir o consumo máximo de oxigênio em ciclistas de estrada?

Abstract The aim of this study was to compare the maximum oxygen consumption (VO2max) between road cyclists with and without risk for eating disorders. The sample was composed of 43 cyclists aged 18-25 years, participants of the road cycling championship of the State of Pernambuco. VO2max was measured by a computerized metabolic analyzer during an incremental test in cycleergometer. The initial test load was 50 W, with increments of 25 W every minute until volitional exhaustion or inability to maintain the current load. To evaluate disordered eating behaviors (DEB), the Eating Attitudes Test was used (EAT-26). Univariate analysis of covariance (ANCOVA) was used to compare the VO2max between cyclists with (EAT-26 ≥ 21) and without (EAT-26 < 21) risk for eating disorders. The findings showed statistically significant VO2max difference between cyclists with and without risk to eating disorders (F (2,41)=28.44; p=0.01), indicating moderate effect size (d = 0.6). It was concluded that DEB was related to cyclists with lower VO2max.

Resumo O objetivo da pesquisa foi comparar o consumo máximo de oxigênio (VO2máx) entre ciclistas de estrada com e sem risco para o desencadeamento de transtornos alimentares. A amostra foi composta por 43 ciclistas com idade entre 18 e 25 anos, participantes do campeonato pernambucano de ciclismo de estrada. O VO2máx foi mensurado por um analisador metabólico computadorizado no decorrer de um teste incremental realizado em cicloergômetro. A carga inicial do teste foi 50 W, com incrementos de 25 W a cada minuto até atingir a exaustão voluntária ou impossibilidade de manter a carga atual. Para avaliar os comportamentos de risco para os transtornos alimentares (CRTA) foi utilizado o Eating Attitudes Test (EAT-26). Conduziu-se a análise univariada de covariância (ANCOVA) para comparar o VO2máx entre ciclistas com (EAT-26≥21) e sem riscos (EAT-26<21) para os transtornos alimentares. Os achados revelaram diferença estatisticamente significante do VO2máx entre ciclistas com e sem risco para os transtornos alimentares (F(2,41)=28,44; p=0,01), indicando moderado tamanho do efeito (d=0,6). Concluiu-se que os CRTA estiveram relacionados aos ciclistas com menor VO2máx.

Odontología en el deporte: ¿sólo un protector bucal?: [Editorial] / Sports dentistry: just a mouthguard deal?: [Editorial]

Muchas veces se interpreta que entre los odontólogos y los deportistas media sólo un protector bucal. Hoy se considera que la odontología es tan importante como la nutrición y la psicología, las cuales integran el equipo médico de entidades deportivas, sobre todo en los ámbitos de alto rendimiento y profesionalismo. La odontología que se practica a los deportistas no difiere de la que se presta a cualquier otro paciente. Las prácticas odontológicas dependen, en todo caso, de las características propias de esa población, las que determinan una atención diferenciada o adaptada. Nuestra tarea abarca la prevención, el diagnóstico y el tratamiento de las distintas patologías y lesiones. La actuación en el área de la atención primaria de la salud nos conecta con deportistas, lo cual aporta experiencias que guían nuestras acciones. En cuanto a los protectores bucales, necesarios en los deportes de contacto, existen diferentes tipos, espesores y características que se adaptan al deporte en cuestión y a la edad de quien lo practica; y también existen diferentes procedimientos para su confección. Por todo esto, debemos apuntar a que los pacientes acudan a nosotros, en lugar de adquirir directamente en los comercios los dispositivos que pueden no ser apropiados.

Many times, it is believed that a mouthguard is all thatseparates athletes from dentists. Dentistry is nowadays consideredto play an important role in medical support of high performance sport teams as well as nutrition or psychologyand more so in professional practice. Dental care providedto athletes is obviously not different from that performed inregular patients.The difference is given by the distinctive features presentedby them, which will require treatment adapted to their specialneeds. As dentists, we also know that our work includesprevention, diagnosis and subsequent treatment of differentlesions and pathologies. Since our field of action is withinprimary health care, an initial consultation with the athletewill provide the information that will guide our counseling, treatment, and regular controls. Regarding physical contact sports where a mouthguard might be indicated, differenttypes, thicknesses and materials are available as well as different processing techniques. All of these possibilities can beused to motivate athletes for dental consultation leading themto avoid standard devices that are sold in sport stores.

Reconstrução anatômica do ligamento cruzado anterior do joelho: banda dupla ou banda simples? / Anatomical reconstruction of anterior cruciate ligament of the knee: double band or single band?

OBJETIVO: Avaliar as técnicas de banda dupla e banda simples para reconstrução anatômica do ligamento cruzado anterior do joelho e comprovar que a técnica de dupla banda, além de fornecer maior estabilidade anterior, também causa menor dor e uma melhor resposta subjetiva do paciente. MÉTODOS: Selecionamos 42 pacientes que foram submetidos à reconstrução do LCA, conforme a técnica de reconstrução anatômica por banda simples com enxerto de tendões flexores com dois túneis ou reconstrução anatômica por banda dupla e quatro túneis com enxerto de tendões dos músculos semitendíneo e gracilis. Todas as fixações foram realizadas com parafusos de interferência. Não houve variação na amostra, avaliou-se no pré-operatório IKDC objetivo, subjetivo, Lysholm e tempo de lesão. Reavaliou-se após seis meses todas as variáveis anteriormente citadas, incluindo o KT-1000 correlacionando o joelho contralateral. RESULTADOS: Não houve diferença significativa entre os dois grupos nas avaliações subjetivas, mas na amplitude de movimento, nas avaliações objetivas, incluindo o KT-1000 (com significância estatística), o grupo da banda simples anatômica obteve melhores resultados. CONCLUSÃO: Nosso estudo demonstra que não obtivemos diferença entre os dois grupos nas avaliações subjetivas, porém nas avaliações objetivas observamos melhores resultados na técnica por banda simples anatômica.

OBJECTIVE: To evaluate the double-band and single-band techniques for anatomical reconstruction of the anterior cruciate ligament of the knee and demonstrate that the double-band technique not only provides greater anterior stability but also causes less pain and a better subjective patient response. METHODS: We selected 42 patients who underwent anterior cruciate ligament reconstruction, by means of either the single-band anatomical reconstruction technique, using flexor tendon grafts with two tunnels, or the double-band anatomical reconstruction technique, using four tunnels and grafts from the semitendinosus and gracilis tendons. All fixations were performed using interference screws. There was no variation in the sample. Before the operation, the objective and subjective IKDC scores, Lysholm score and length of time with the injury were evaluated. All these variables were reassessed six months later, and the KT-1000 correlation with the contralateral knee was also evaluated. RESULTS: There was no significant difference between the two groups in subjective evaluations, but the single-band group showed better results in relation to range of motion and objective evaluations including KT-1000 (with statistical significance). CONCLUSION: Our study demonstrated that there was no difference between the two groups in subjective evaluations, but better results were found using the single-band anatomical technique, in relation to objective evaluations.

Lesões nos jogadores de futebol profissional do Marília Atlético Clube: estudo de coorte histórico do campeonato brasileiro de 2003 a 2005 / Injuries in the professional soccer players of Marília Atlético Clube: a cohort study of the Brazilian Championship, 2003 to 2005

INTRODUÇÃO E OBJETIVOS: Vários autores têm investigado a incidência de lesões no futebol, poucos têm-se preocupado com o tempo de afastamento dos atletas ou com os prejuízos financeiros oriundos de tal situação. O objetivo deste estudo foi confrontar, através de um estudo de coorte histórico, o tempo total de afastamento de atletas lesionados com as variáveis: idade, posição dos jogadores e tipo de lesão. MÉTODOS: Foram analisados os jogadores de futebol profissional do Marília Atlético Clube que atuaram no Campeonato Brasileiro de Futebol - Série B, de 2003 a 2005. As informações foram coletadas através do acesso direto aos prontuários médicos e protocolo de coleta de dados, com um período de seguimento de 24 meses, sendo, posteriormente, realizada a análise estatística. RESULTADOS: A idade dos jogadores variou de 18 a 35 anos (24,5 ± 4,4); os jogadores mais freqüentemente lesionados foram: atacantes (36,8 por cento), zagueiros (26,6 por cento), meias (20 por cento), laterais (10 por cento) e goleiros (6,6 por cento); as lesões mais comuns foram: musculares (46,8 por cento), ligamentares (26,6 por cento), ósseas (16,6 por cento) e meniscais (10 por cento); o tempo de afastamento nos atacantes variou de 10 a 240 dias (28 ± 78,3), nos zagueiros de 20 a 120 dias (26,5 ± 33,9), nos meias de 10 a 180 dias (18,5 ± 66,3), nos laterais de 13 a 240 dias (17 ± 129,9) e nos goleiros de 35 a 60 dias (47,5 ± 17,6). CONCLUSÃO: A análise estatística mostrou não haver correlação entre a idade dos jogadores e o tempo total de afastamento dos mesmos (p = 0,31), não houve diferença significativa entre o tempo de afastamento nas diferentes posições dos jogadores dentro de campo (p = 0,49), houve diferença significativa entre o tempo total de afastamento e os diferentes tipos de lesão (p < 0,001) entre as variáveis: lesões meniscais e ósseas, lesões meniscais e musculares, lesões ligamentares e ósseas e, finalmente, lesões ligamentares e/ musculares.

INTRODUCTION AND OBJECTIVES: several authors have investigated the incidence of injuries occurred in outdoor soccer games. However, just a few are concerned about the athletes' healing period or the financial damage due to this no-activity period. The purpose of this study was to assess, through a cohort study, the injured athletes' recovery period, facing it to the variables: age, position in game and injure pattern. METHODS: The medical reports of all professional soccer players of Marília Atlético Clube who were injured during the Brazilian Soccer Championship - 2nd Division, from January/2003 to December/2005 were assessed, with a 24 months follow-up. RESULTS: Athletes' mean age (SD) was 24.5 years (4.4 years); the most frequently injured athletes were: strikers (36.8), center-backs (26.6 percent), center-midfielders (20 percent), side-midfielders (10 percent) and goalkeepers (6.6 percent). The most frequent injuries were: muscular (46.8 percent), ligament (26.6 percent), bone (16.6 percent) and meniscal (10 percent); the strikers have shown a mean recovery period of 28 days (78.3 days), the center-backs 26.5 days (33.9), the center-midfielders 18.5 days (66.3), the side-midfielders 17 days (129.9) and the goalkeepers 47.5 days (17.6). CONCLUSION: Statistical analysis showed that there was no correlation between athletes' age and their healing period (p/ =/ 0.31); there was no statistical difference between the healing period among the five different athletes' positions (p/ =/ 0.49); there was statistical difference between the healing period and the injury pattern (p/

The Analysis of Medical Services during Summer Universiade

PURPOSE: The purpose of this study is to supply basic data for medical supports of the international games held in Korea and to design adequate plans for medical support systems in the international games. METHODS: We analyzed patients who visited the medical facilities during Summer Universiade Daegu 2003. A total of 3,363 individuals used the Athlete's Village Polyclinic during the Game, but a total of 1,079 cases were treated with traditional oriental medicine and were excluded. Standard charts were available for the 2,248 cases. Data were collected regarding patients' sex, age, participation role, chief complaint, diagnosis, visits of medical departments, management, and disposition. We classified patients according to acuity scoring criteria (a four-tier triage system), economies, and the data compared. Significant athlete injuries were triaged immediately by physicians stationed at the event scene. RESULTS: In the analysing, we used 2,248 cases, including some repeat visits. There were 987 visits by athletes, 937 visits by officials, 236 visits by staffs, and 88 visits by others. Musculoskeletal diseases were the primary chief complaint. Curiously, the lower income group visited the Polyclinic more often than the high income group. CONCLUSION: Most Polyclinic staffs were volunteers, providing encouragement and enthusiasm to patients. In this study, patient were contacted with emergency physicianbased medical service. For the future plans of the medical supports for similar events, effective medical plans should be finalized by considering multiple factors.