O esporte e suas implicações na saúde óssea de atletas adolescentes

A adolescência é um período fundamental para a aquisição da massa óssea. em adolescentes atletas, o pico de massa óssea pode apresentar maior incremento, em virtude do estresse mecânico imposto aos ossos pelo exercício físico praticado. O objetivo desta revisão foi investigar o papel do treinamento esportivo vigoroso e precoce sobre a saúde óssea de atletas adolescentes. Através da revisão da literatura científica, envolvendo adolescentes atletas de diferentes modalidades e de ambos os sexos, é possível inferir que a densidade mineral óssea é potencializada pelos exercícios, quando grupos de atletas são comparados com grupos de controle. Entretanto, muito se discute na literatura quanto à recomendação da intensidade adequada da prescrição de exercício físico para população adolescente, uma vez que, caso o treinamento se torne muito extenuante, os benefícios gerados pela atividade sobre a saúde dos ossos podem ser minimizados ou anulados. Embora muita controvérsia ainda envolva o tema, independente do tipo de esporte praticado, o aumento de intensidade do treinamento deve ser razoável e coerente com as metas, sendo enfatizado treinamento seguro e eficaz para cada uma das faixas de idade e momentos da maturação biológica, independente dos calendários competitivos.

Avaliação Histológica e histomorfométrica do reparo ósseo em tíbias osteotomizadas de ratos (rattus novergicus albinus), submetidos a tratamento com ultrassom, frente à presença e ausência de carga

The response of bone metabolism is directly related to hormonal factors and mechanical stimuli that the bone is exposed. The ultrasonic energy on bone healing have been shown to be crucial for the stimulation and improvement in quality of newly formed tissue. The aim of this study was to analyze the action of low intensity ultrasound on bone healing of tibial osteotomy in rats subjected to tail suspension, through histological analysis and histomorphometry. Eighteen Rattus norvegicus albinos, Wistar, adults were divided into three groups, arranged as follows: G1 (n = 6), who remained free for a period of 15 days, G2 (n = 5), suspended by the tail for a period of 15 days and G3 (n = 7), suspended by the tail for a period of 36 days. In all three groups, both tibias were subjected to mono-cortical bone injury 4X2 mm in the medial region of the diaphysis, and the left limb was used as control and the right limb undergoing treatment with ultrasound (U.S.). The right tibia was treated with pulsed ultrasound at a frequency of 1.5 MHz, duty cycle 1:4, 30mW/cm2, for 12 sessions of 20 minutes each. Samples of tibia were subjected to histological analysis, blindly, with light microscopy and histomorphometric analysis by specific software Image-Pro 6.1. The average percentage of new bone formation were subjected to analysis of variance in subdivided parcels and multiple comparison test "Student-Newman-Keuls (SNK), with a significance level of 5%. The average values and standard deviations of the percentage of newly formed bone for the groups showed the least amount of bone repair G1t (13.62% ± 4.88%) - G1c (8.68% ± 4.16%) compared G2t groups (27.17% ± 11.36%) - G2c (10.10% ± 7.90%) and G3t (23.19% ± 5.61%) - G3c (15.74% ± 7 08%). However, the mean values and standard deviations of the percentage of newly formed bone repair in the tibia treated G2t and G3t were significantly higher when compared to the repair of tibia in the control group (G2c and G3c). Consequently, we conclude that ultrasound has helped to accelerate bone repair in both the presence and absence of cargo.

Combinação de técnicas para tratamento cirúrgico de fratura do complexo zigomático-maxilar: relato de caso

The zygomatic-maxillary complex due to its projection framed as one of the areas hardest hit by injuries, as well as the nasal bones. Component important in this context, the zygomatic arch fracture is under the direct action of forces due to its structure fragile, resulting in loss of normal convex curvature. Therefore, it is aimed to report a clinical case of male patient, who had leucoderma zygomatic bone fracture using access transcutaneous and intra-oral fracture reduction body of zygoma and zygomatic arch. In addition to evidence combination of closed and open techniques for solving the case. The technique provided the patient excellent cosmetic and functional results.