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Registros recuperados: 6
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Analysis of fracture healing in osteopenic bone caused by disuse: experimental study BJMBR
Paiva,A.G.; Yanagihara,G.R.; Macedo,A.P.; Ramos,J.; Issa,J.P.M.; Shimano,A.C..
Osteoporosis has become a serious global public health issue. Hence, osteoporotic fracture healing has been investigated in several previous studies because there is still controversy over the effect osteoporosis has on the healing process. The current study aimed to analyze two different periods of bone healing in normal and osteopenic rats. Sixty, 7-week-old female Wistar rats were randomly divided into four groups: unrestricted and immobilized for 2 weeks after osteotomy (OU2), suspended and immobilized for 2 weeks after osteotomy (OS2), unrestricted and immobilized for 6 weeks after osteotomy (OU6), and suspended and immobilized for 6 weeks after osteotomy (OS6). Osteotomy was performed in the middle third of the right tibia 21 days after tail...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Osteoporosis; Osteotomy; Fracture healing; Immobilization; Rats.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000300708
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High-impact exercise in rats prior to and during suspension can prevent bone loss BJMBR
Yanagihara,G.R.; Paiva,A.G.; Gasparini,G.A.; Macedo,A.P.; Frighetto,P.D.; Volpon,J.B.; Shimano,A.C..
High-impact exercise has been considered an important method for treating bone loss in osteopenic experimental models. In this study, we investigated the effects of osteopenia caused by inactivity in femora and tibiae of rats subjected to jump training using the rat tail suspension model. Eight-week-old female Wistar rats were divided into five groups (n=10 each group): jump training for 2 weeks before suspension and training during 3 weeks of suspension; jump training for 2 weeks before suspension; jump training only during suspension; suspension without any training; and a control group. The exercise protocol consisted of 20 jumps/day, 5 days/week, with a jump height of 40 cm. The bone mineral density of the femora and tibiae was measured by double...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bone; Mechanical properties; Bone mineral density; Scanning electron microscopy; Jump; Rats.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000300605
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Histomorphometric analysis of the response of rat skeletal muscle to swimming, immobilization and rehabilitation BJMBR
Nascimento,C.C.F.; Padula,N.; Milani,J.G.P.O.; Shimano,A.C.; Martinez,E.Z.; Mattiello-Sverzut,A.C..
The objective of the present study was to determine to what extent, if any, swimming training applied before immobilization in a cast interferes with the rehabilitation process in rat muscles. Female Wistar rats, mean weight 260.52 ± 16.26 g, were divided into 4 groups of 6 rats each: control, 6 weeks under baseline conditions; trained, swimming training for 6 weeks; trained-immobilized, swimming training for 6 weeks and then immobilized for 1 week; trained-immobilized-rehabilitated, swimming training for 6 weeks, immobilized for 1 week and then remobilized with swimming for 2 weeks. The animals were then sacrificed and the soleus and tibialis anterior muscles were dissected, frozen in liquid nitrogen and processed histochemically (H&E and mATPase)....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Swimming training; Female rat skeletal muscles; Immobilization; Morphometry; ATPase.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000900013
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Mechanical analysis of transversal iliac fracture stabilization using dynamic compression plate or screws and PMM in polyurethane bone model Arq. Bras. Med. Vet. Zootec.
Prada,T.C.; Shimano,A.C.; Chung,D.; Karcher,D.E.; Minto,B.W..
ABSTRACT Pelvic fractures correspond to 20 to 30 % of the fractures observed in dogs. Complete fractures, especially with bone axis deviation should be surgically treated. The mechanical study of surgical techniques is of utmost importance to assess the best way of treating these injuries. This study compared, biomechanically, the use of a dynamic compression plate (DCP) and screws (group 1) or screws and polymethylmethacrylate (PMMA) (group 2) to stabilize an iliac fracture using a static test. Sixteen canine synthetic hemi-pelvises (test specimens) with a transverse iliac osteotomy were used. After fixation with implants, a load was applied to the acetabulum until failure. Group 1 maximal compressive load was 133.9±18.60 N, displacement at yield...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pelvis; Stabilization; Biomechanical; Fracture.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000400901
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Role of the oblique ligament in the integrity of the medial collateral ligament of the canine elbow joint Arq. Bras. Med. Vet. Zootec.
Oliveira,D.; Baraldi-Artoni,S.M.; Shimano,A.C.; Rossi,J.R.; Tovar,M.C.H..
It was studied the arrangement of the collagen fibrils of the medial collateral ligament of the canine elbow joint and evaluated its diameter, when it was isolated or associated to the oblique ligament and loaded in tension until failure. Eighteen joints were divided in three groups. The first group had the medial collateral ligament collected and not loaded, the second group had the medial collateral ligament tested separately and the third group had both ligaments associately tested. Medial collateral ligament not submitted to strain presented a wavy and reticular pattern of the collagen fibers, which was not totally destroyed when it was loaded associated to the oblique ligament, and totally loses the reticular pattern when stretched separately. When...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dog; Medial collateral ligament; Oblique ligament; Elbow; Collagen fibrils.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352007000100021
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Torsional comparative biomechanical test of modified tibial-plateau-leveling osteotomy plate and locking plate in canine synthetic tíbias Arq. Bras. Med. Vet. Zootec.
Sembenelli,G.; Shimano,A.C.; Wittmaack,M.C.N.; Rocha,T.A.S.S.; Moraes,P.C.; Minto,B.W.; Dias,L.G.G.G..
ABSTRACT The objective of this study was to develop a locked tibial-plateau-leveling osteotomy (TPLO) plate and to compare this implant with the conventional bone fixation method using a locked plate to determine bone stabilization against torsion forces. Maximum force, angle at peak torque, and stiffness values were determined. Ten synthetic tibias were used, divided into 2 groups. The results in Group 1 (modified TPLO plate) and Group 2 (locked plate) were assessed using analysis of variance and the means were compared using Tukey’s test at 5% probability. There were significant differences in the angle at peak torque and stiffness. The group Modified TPLO plate had higher mean values of stiffness compared with Group locked plate. Group locked plate...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Orthopedics; Osteosynthesis; Biomechanics.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000501535
Registros recuperados: 6
Primeira ... 1 ... Última
 

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