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      Homoimplante ortotópico conservado, associado à terapia "soft laser" na reparação tenopatelar em cão Translated title: Preserved orthotopic homologous implant associated with soft laser therapy in tenopatellar repair in the dog

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          Abstract

          Em busca de um método alternativo para reparação de lesões articulares envolvendo o segmento tenopatelar, 24 cães foram submetidos ao implante tenopatelar conservado em solução de glicerina a 98% e distribuídos em dois grupos de igual número (grupos I e II). Os cães do grupo II foram submetidos à terapia laser Arseneto de Gálio nos primeiros 10 dias de pós-operatório. Os animais de cada grupo foram novamente distribuídos em subgrupos de igual número de acordo com a faixa de peso que foi entre 10 e 20kg e 21 e 30kg e períodos pós-operatórios (PO) de 60, 120 e 180 dias. A articulação do joelho foi imobilizada por fixação externa percutânea tipo II e permaneceu por um período de 30 dias de pós-operatório o que proporcionou uma adequada estabilidade articular para cicatrização. Foi notada em todos os animais dos grupos I e II, atrofia da musculatura da coxa sem recuperação da massa muscular até os períodos preestabelecidos de pós-operatório (PO) de 60, 120 e 180 dias. Na avaliação macroscópica, foi notada proliferação de tecido conjuntivo ao redor e sobre a patela implantada. Na análise radiográfica, foram observados diferentes estágios de reabsorção óssea do enxerto patelar e pela microscopia foram vistas em todos os grupos, trabéculas ósseas do enxerto em fase de reabsorções, margeadas por osteoclastos e preenchidas por tecido fibrovascular e neoformação óssea a partir de ossificação endocondral. Conclui-se que a técnica de implantação de segmento tenopatelar homógeno ortotópico conservado em glicerina a 98% é apropriado para substituir segmento tenopatelar em cães pesando até 30kg.

          Translated abstract

          The aim of the present research was to develop an alternative method of treatment for tenopatellar lesions. The tenopatellar implant, preserved in glycerin 98%, was applied in 24 dogs, associated (group I - twelve dogs) or not (group II - twelve dogs) to laser therapy with gallium arsenide during the first ten post-operative days. The animals in each group were divided again in subgroups according to body weight (between 10 and 20kg or between 21 and 30kg) and according to post-operative period (60, 120 and 180 days) of evaluation. The stifle joint was immobilized through percutaneous external skeletal fixation type II for 30 post-operative days. Temporary articular immobilization provided adequate joint stability. At radiographic exams, different stages of bone resorption from the implant were verified, being more evident at 180 days post-operativelly. Microscopically, fragments of osteal trabecules of the graft, in reabsorption phase, surrounded by osteoclasts and filled with fibrovascular tissue were verified in all the groups. Newbone formation at the graft from endochondral ossification, more evident at the 180th day group, was noted. Despite the need for more studies, with a longer period of post-operatory evaluation, the implant of an orthotopic homologous tenopatellar segment preserved in glycerin 98% is suitable for replacement of tenopatellar segments in dogs weighting up to 30 kg.

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          Aloenxertos ósseos caninos diferentemente preservados

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            Homoimplante ortotópico de tendão calcâneo comum, conservado em glicerina a 98%, e tratado com radiação laser arseneto de gálio, sob dois métodos de imobilização, em cães

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              Hypertrophy and transformation of muscle fibers in paraplegic patients.

              Transcutaneous electrical stimulation of the quadriceps femoris muscle was applied in 14 paraplegic patients (10 spastic patients with spinal cord lesions and 4 patients with conus-cauda lesions with denervation atrophy). In both the spastic and the denervated group, the vastus lateralis muscle was biopsied and computed tomography (CT) images of the entire upper leg were made both at the onset and termination of the 8-month training period. The stimulation was carried out twice a day for 20 min. The increase in muscle tissue was significant in the CT images. The biopsies showed that the fiber diameter of both fiber types increased during the training period in the spastic group from 47 to 67 microns and in the denervated group from 22 to 38 microns. In both groups, the differences were significant between the first and second biopsies. Both groups showed a marked Type 2 fiber predominance. The histological and CT findings correlated with the clinical improvement of muscle function.
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                Author and article information

                Contributors
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                Journal
                cr
                Ciência Rural
                Cienc. Rural
                Universidade Federal de Santa Maria (Santa Maria )
                1678-4596
                April 2004
                : 34
                : 2
                : 429-437
                Affiliations
                [1 ] Universidade Federal de Santa Maria Brazil
                [2 ] UFS
                Article
                S0103-84782004000200015
                10.1590/S0103-84782004000200015
                4fa95420-9f67-4072-93ad-68c1b6dc1299

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0103-8478&lng=en
                Categories
                AGRONOMY

                Horticulture
                allograft,surgery,glycerol,patella,physiotherapy,dogs,homoimplante,cirurgia,glicerina,patela,fisioterapia,cães
                Horticulture
                allograft, surgery, glycerol, patella, physiotherapy, dogs, homoimplante, cirurgia, glicerina, patela, fisioterapia, cães

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