Bone Callus
Mostrando 1-12 de 39 artigos, teses e dissertações.
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1. Bone callus formation is highly disrupted by dietary restriction in growing rats sustaining a femoral fracture
Abstract Purpose: To evaluate the effects of food restriction on fracture healing in growing rats. Methods: Sixty-eight male Wistar rats were assigned to two groups: (1) Control and (2) Dietary restriction. After weaning the dietary restricted animals were fed ad libitum for 42 days with 50% of the standard chow ingested by the control group. Subsequentl
Acta Cir. Bras.. Publicado em: 14/02/2019
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2. Análisis de los elementos principales en el diseño de placas de bloqueo en una fractura de 2-partes del cuello quirúrgico del húmero utilizando MEF y análisis estadístico
ABSTRACT A large number of proximal humerus fractures are being treated with osteosynthesis. However, loss of reduction remains a serious problem and it can cause screw cutout at the humeral joint and reoperation. According to the interfragmentary strain theory, one should be aware of the balance between a flexible fixation, which stimulates callus formation
Matéria (Rio J.). Publicado em: 06/12/2018
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3. Nandrolone decanoate appears to increase bone callus formation in young adult rats after a complete femoral fracture
Abstract Purpose: To evaluate the influence of nandrolone decanoate on fracture healing and bone quality in normal rats. Methods: Male rats were assigned to four groups (n=28/group): Control group consisting of animals without any intervention, Nandrolone decanoate (DN) group consisting of animals that received intramuscular injection of nandrolone decano
Acta Cir. Bras.. Publicado em: 2017-11
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4. Bone healing after biodegradable mini-plate fixation
ABSTRACT PURPOSE: To compare bone healing in mandibular vertical body osteotomies (MVBO) after fixation with a resorbable 2.0mm-profile fixation system in the first and third postoperative months in rabbits. METHODS: Twenty hemimandibles of ten rabbits were divided into two groups according to duration of resorbable fixation-one or three months. The MVBOs
Acta Cir. Bras.. Publicado em: 2016-06
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5. Diabetes mellitus affects the biomechanical function of the callus and the expression of TGF-beta1 and BMP2 in an early stage of fracture healing
Transforming growth factor beta 1 (TGF-β1) and bone morphogenetic protein-2 (BMP-2) are important regulators of bone repair and regeneration. In this study, we examined whether TGF-β1 and BMP-2 expressions were delayed during bone healing in type 1 diabetes mellitus. Tibial fractures were created in 95 diabetic and 95 control adult male Wistar rats of 10 w
Braz J Med Biol Res. Publicado em: 27/11/2015
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6. Whole-body vibration improves fracture healing and bone quality in rats with ovariectomy-induced osteoporosis
PURPOSE: To investigate the effect of vibration therapy on the bone callus of fractured femurs and the bone quality of intact femurs in ovariectomized rats. METHODS: Fifty-six rats aged seven weeks were divided into four groups: control with femoral fracture (CON, n=14), ovariectomized with femoral fracture (OVX, n=14), control with femoral fracture plus v
Acta Cir. Bras.. Publicado em: 2015-11
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7. A comparative in vivo ultrasonometric evaluation of normal and delayed fracture healing in sheep tibiae
OBJECTIVE: To compare normal and delayed bone healing by measuring ultrasound conduction velocity across the bone callus. METHODS: A model of transverse linear and 5 mm resection osteotomies of sheep tibiae was used. Fourteen sheep were operated on and were divided into two groups of seven according to osteotomy type. The procedure was performed on the rig
Clinics. Publicado em: 2014-09
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8. Effect of hyperbaric oxygen therapy combined with autologous platelet concentrate applied in rabbit fibula fraction healing
OBJECTIVES: The purpose is to study the effects of hyperbaric oxygen therapy and autologous platelet concentrates in healing the fibula bone of rabbits after induced fractures. METHODS: A total of 128 male New Zealand albino rabbits, between 6-8 months old, were subjected to a total osteotomy of the proximal portion of the right fibula. After surgery, the
Clinics. Publicado em: 2013-09
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9. The effects of alpha-tocopherol supplementation on fracture healing in a postmenopausal osteoporotic rat model
OBJECTIVE: Osteoporosis increases the risk of bone fractures and may impair fracture healing. The aim of this study was to investigate whether alpha-tocopherol can improve the late-phase fracture healing of osteoporotic bones in ovariectomized rats. METHOD: In total, 24 female Sprague-Dawley rats were divided into three groups. The first group was sham-opera
Clinics. Publicado em: 2012-09
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10. Laser de baixa intensidade e scaffold de Biosilicato: efeitos isolados e da associação das duas modalidades terapêuticas no reparo ósseo
This study aimed to evaluate the effects of low intensity laser therapy (LLLT) (830nm, 120J/cm2, 100mW) and implantation of Biosilicate scaffolds, associated or not, in histological aspects, biomechanical properties of the bone callus and immunoexpression of proteins, growth and transcription factors related to different stages of bone repair, at 15, 30 and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/12/2011
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11. Avaliação do reparo tecidual em defeito ósseo por microtomografia tridimensional por raio X / Evaluation of tissue repair after bone fracture using 3D X-ray microtomography
Fracture is a bone discontinuity that can be surgically produced or caused by an impact that exceeds the mechanical strength of bone by initiating a series of systemic events and specific tissue response. Radiological tests are commonly performed in clinical and animal experiments for monitoring the bone healing by providing information about the alignment o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/07/2011
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12. Efeitos do Ãcido zoledrÃnico na consolidaÃÃo de fraturas da diÃfise femoral de ratos / Effects of zoledronic acid on fracture healing of femoral diaphysis of rats.
Femoral fractures are considered a public health problem and account for a high rate of morbidity and mortality by the occurrence of complications. They occur not only in young patients exposed to major trauma but in the elderly population as well. Most elderly patients have certain conditions, eg, osteoporosis, which further increase the risk of such fractu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/03/2011