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1.
Int. j. morphol ; 39(2): 378-385, abr. 2021. ilus, tab
Article in English | LILACS | ID: biblio-1385376

ABSTRACT

SUMMARY: We studied the bones of forelimb of four adult lions (Panthera leo) of both sexes to record the gross anatomical and morphometrical features of the scapula, humerus, radius and ulna. We observed some unique anatomical features that will be helpful for radiographic interpretation and forensic investigations. The lateral surface of scapula was unequally divided into supraspinous (fossa supraspinata) and infraspinous fossa (fossa infraspinata) by a well developed spine (spina scapulae). The acromion process was subdivided into suprahamate process (processus suprahamatus)and hamate process (processus hamatus); the later one was over hanged the glenoid cavity (cavitas glenoidalis), but the supraglenoid tubercle (tuberculum supraglenoidalis) was absent. The shaft (diaphysis) of humerus was compressed craniocaudally in proximal part, rounded to oval in middle part and compressed mediolaterally in distal part. A long, narrow supracondyloid foramen was found at distal limb just above the medial epicondyle (epicondylus medialis) which didn't connect the radial fossa (fossa radialis) with the olecranon fossa (fossa olecrani). The radius and ulna were twin bones where radius was articulated craniolateral to the ulna proximally and craniomedial to the ulna distally. However, the ulna was the longest bone in the forelimb of lion. The olecranon tuberosity of this bone had three prominences - two were cranially, whereas the caudal one was the largest and rounded. Distally projected styloid processes (processus styloideus) were found in the distal limb of both radius and ulna.


RESUMEN: Estudiamos los huesos de las miembros torácicos de cuatro leones adultos (Panthera leo) de ambos sexos para registrar las características anatómicas y morfométricas macroscópicas de la escápula, el húmero, el radio y la ulna. Se observaron algunas características anatómicas únicas que serán útiles para la interpretación radiográfica y las investigaciones forenses. La superficie lateral de la escápula se dividió de manera desigual en fosa supraespinosa y fosa infraspinosa por una columna bien desarrollada (espina de la escápula). El proceso del acromion se subdividió en proceso suprahamato (processus suprahamatus) y proceso hamato (processus hamatus); el tubérculo supraglenoideo (tuberculum supraglenoidalis) estaba ausente. La diáfisis (diafisis) del húmero estaba comprimida craneocaudalmente en la parte proximal, redondeada a ovalada en la parte media y comprimida mediolateralmente en la parte distal. Se encontró un foramen supracondileo largo y estrecho en la extremidad distal, por encima del epicóndilo medial (epicondylus medilaris) que no conectaba la fosa radial (fosa radial) con la fosa olecraneana (fossa olecrani). El radio y la ulna eran huesos idénticos en los que el radio se articulaba craneolateral a la ulna proximalmente, y craneomedial a la ulna distalmente. Sin embargo, la ulna era el hueso más largo del miembro torácico del león. La tuberosidad del olécranon de este hueso tenía tres prominencias: dos eran craneales, mientras que la caudal era la más grande y redondeada. Se encontraron procesos estiloides proyectados distalmente (processus styloideus) en la extremidades distales del radio y la ulna.


Subject(s)
Animals , Male , Female , Forelimb/anatomy & histology , Lions/anatomy & histology , Radius/anatomy & histology , Scapula/anatomy & histology , Ulna/anatomy & histology , Humerus/anatomy & histology
2.
Rev. bras. ciênc. vet ; 26(4): 118-127, out./dez. 2019. ilus
Article in Portuguese | LILACS, VETINDEX | ID: biblio-1491651

ABSTRACT

O lobo-guará Chrysocyon brachyurus Illiger, 1815, é o maior canídeo da América do Sul, pesa cerca de 25 kg quando adulto e está ameaçado de extinção. Descrições anatômicas contribuem para a complementação das informações sobre espécies silvestres e para implicações conservacionistas, clínicas e cirúrgicas. Objetivou-se descrever os ossos e os músculos do antebraço e mão do lobo-guará. A preparação das peças foi feita a partir dos métodos usuais de dissecação, em animais preservados em solução de formol a 10%. Os espécimes pertencem ao acervo didático do Laboratório de Ensino e Pesquisa em Animais Silvestres da UFU e são provenientes de indivíduos atropelados. Os ossos descritos foram: rádio, ulna, ossos cárpico acessório, cárpico ulnar e cárpico intermédio; ossos cárpicos I, II, III e IV; ossos metacárpicos I, II, III, IV, V; falanges proximais, falanges médias e falanges distais do primeiro ao quinto dedo. Os músculos observados foram: extensor radial do carpo; pronador redondo; braquiorradial; extensor comum dos dedos; extensor ulnar do carpo; extensor lateral dos dedos; supinador; abdutor longo do dedo I; flexor radial do carpo; flexor profundo dos dedos; flexor superficial dos dedos; flexor ulnar do carpo; pronador quadrado; interflexor; lumbricais; abdutor curto dos dedos I e II e flexor curto do dedo I.


The maned wolf Chrysocyon brachyurus (Illiger, 1815) is the largest canid in South America, weighs about 25 kg as an adult and is threatened of extinction. Anatomical descriptions contribute to the complementation of information on wild species and for conservation, clinical and surgical implications. The purpose of this study was to describe the bones and muscles of the forearm and hand of the maned wolf. The methodology was through the usual dissecting methods in animals preserved in 10% formalin solution. The animals belong to the didactic collection of the Laboratory of Teaching and Research in Wild Animals of the UFU and come from run over. The bones evaluated were: radius, ulna, carpal accessory, carpi ulnar and carpi intermedium; carpal bones I, II, III and IV; metacarpal bones I, II, III, IV, V; proximal phalanges, middle phalanges and distal phalanges from first to fifth finger. The muscles observed were: radial extensor carpal; pronator round; brachioradial; common extensor of fingers; ulnar carpal extensor; lateral extensor of the fingers; supinator; abductor long finger I; flexor carpi radialis; flexor deep fingers; superficial flexor of the fingers; ulnar flexor of the carpus; square pronator; interflexor; lumbrils; short abductor of fingers I and II and short flexor of finger I.


Subject(s)
Animals , Forearm/anatomy & histology , Wolves/anatomy & histology , Forelimb/anatomy & histology , Hindlimb/anatomy & histology , Muscles/anatomy & histology , Bone and Bones/anatomy & histology , Upper Extremity/anatomy & histology , Bones of Upper Extremity/anatomy & histology
3.
Int. j. morphol ; 35(3): 1000-1009, Sept. 2017. ilus
Article in Spanish | LILACS | ID: biblio-893085

ABSTRACT

El objetivo del estudio fue describir las características anatómicas y establecer hipótesis morfo-funcionales del esqueleto del miembro torácico de Mazama gouazoubira. Para ello, se utilizaron los miembros torácicos de cuatro adultos jóvenes. Los huesos se prepararon mediante ebullición y fueron blanqueados en una solución de peróxido de hidrógeno para obtener descripciones comparativas, mediciones osteométricas y radiografías digitales. En comparación con los rumiantes domésticos, la escápula resultó ser ancha y plana, con el acromion pequeño, el proceso coracoides muy pequeño y sin tuberosidad de la espina. El húmero se observó alargado con la diáfisis redondeada en una sección transversal y con proyecciones no articulares lisas. La ulna se unió al radio hasta la epífisis distal y juntos formaron un espacio interóseo proximal alargado y estrecho, sin surco vascular. El esqueleto de la mano presentó los metacarpianos III y IV bien desarrollados y fusionados, mientras que los metacarpianos II y V resultaron rudimentarios con disposición telemetacarpiana, filogenéticamente típico de cérvidos del Nuevo Mundo. Se encontraron cuatro dedos con tres falanges en cada uno, de los cuales, dos corresponden a los principales (III y IV) que llegan al suelo y dos son rudimentarios (II y V). Las radiografías nos permitieron visualizar los patrones de tensiones trabeculares normales y la osteometría permitió establecer relaciones con fines comparativos. Se reconocieron las adaptaciones esqueléticas del miembro torácico para favorecer la locomoción cursorial saltatoria.


This study aimed to describe anatomical features of the forelimb skeleton of Mazama gouazoubira in order to establish morphofunctional activity. Forelimbs of four young adult specimens were used to this end. The bones were prepared by boiling and cleared in a solution of hydrogen peroxide for comparative descriptions, osteometrics measurements and digital radiographs. Compared to domestic ruminants, the scapula proved to be wide and flat, with a small acromion, reduced coracoid process and lacking of spine tuberosity. The humerus had an elongated shaft with a rounded cross-section and discrete non-articular projections. The ulna accompanied the radio to the distal epiphysis and formed a long and narrow, proximally placed interosseous space without a vascular groove. The skeleton of the hand presented the rudimentary metacarpals II and V and the well-developed III and IV fused metacarpals, which is a typical telemetacarpal arrangement of close phylogenetically deer species from the New World. There were four fingers, each one with three phalanges; two main (III and IV) touching the ground and two rudimentary (II and V). Radiographs allowed visualizing patterns of normal trabecular tensions and osteometrics enabled to establish ratios for comparative purposes. Adaptations of skeletal forelimb to favor cursorial saltatory locomotion were typically identified.


Subject(s)
Animals , Male , Female , Deer/anatomy & histology , Forelimb/anatomy & histology , Metacarpal Bones/anatomy & histology
4.
Int. j. morphol ; 33(4): 1455-1459, Dec. 2015. ilus
Article in Spanish | LILACS | ID: lil-772337

ABSTRACT

El zorro perruno (Cerdocyon thous) es el cánido silvestre más común en América del Sur, con una relativa estabilidad poblacional, pero susceptible de ser atropellado y caer en trampas, pudiendo sufrir traumas en sus miembros torácicos, por lo tanto se requiere un conocimiento anatómico específico de sus músculos para intervenciones médicas y quirúrgicas. El objetivo principal de esta investigación fue realizar una descripción anatómica del músculo extensor del I y II dedo del C thous, en la cual, se reporta forma, origen, inserción, inervación e irrigación. Se diseccionaron de superficial a profundo los dos antebrazos de seis especímenes muertos donados por CORPOCALDAS a la Universidad de Caldas. El músculo extensor del I y II dedo en este estudio presentó características anatómicas similares a las reportadas a otras especies pero con una distribución tendinosa variante formando desde tres a cuatro ramas que se distribuyen del I al III dedo, incluso faltando a veces para el III dedo, pero de igual forma presenta una distribución que debe ser conocida para procedimientos que requieran de su conocimiento.


The crab-eating fox (Cerdocyon thous) is the most common wild canid in South America. With a relative demographic stability, this animal is susceptible of being hit and falling into traps, and can suffer trauma in its thoracic limbs; therefore a specific anatomical knowledge about its muscles is necessary for medical and surgical procedures. The main aim of this research was to describe the anatomy of the extensor muscle of digit I and II of the C. thous reporting form, origin, insertion, innervation and irrigation. The forearms of six donated dead specimens from CORPOCALDAS to Caldas University were dissected from superficial to deep. In this research, the extensor muscle of digit I and II showed similar anatomical features to those reported for other species but with a variant tendinous distribution that forms from three to four branches distributed from digit I to III. Although sometimes this distribution does not exist for the digit III; this similar distribution must be reported for procedures which require this knowledge.


Subject(s)
Animals , Forelimb/anatomy & histology , Foxes/anatomy & histology , Muscle, Skeletal/anatomy & histology , Tendons/anatomy & histology
5.
Int. j. morphol ; 31(4): 1482-1490, Dec. 2013. ilus
Article in English | LILACS | ID: lil-702338

ABSTRACT

Morphological work on the appendicular myology of birds forms the basis for comparative, functional and systematic studies, but our knowledge of the descriptive anatomy of birds is still very incomplete. The musculature of the wing muscles of the Golden Pheasant (Chrysolophus pictus), an endemic species of China, is studied in detail. All wing muscles are present as in other Galliformes. Myological characteristics including the absence of a deep layer of M. pectoralis pars thoracicus, well development of anterbrachial muscles, as well as the occurrence of a distinct fleshy slip from the proximal belly of M. biceps brachii, are suggested to be associated with its flapping flight. This paper is the prelude to functional analysis on muscle architecture in this species and may serve as a basis for future taxonomic comparisons.


El trabajo morfológico en la miología apendicular de las aves constituye la base para los estudios comparativos, funcionales y sistemáticos, sin embargo, nuestro conocimiento de la anatomía descriptiva de las aves es aún muy incompleto. Se estudió en detalle la musculatura de las alas del faisán de oro (Chrysolophus pictus), una especie endémica de China. Todos los músculos de las alas están presentes tal como en otros Galliformes. Características miológicas que se estima están asociadas con su vuelo de aleteo, incluyen la ausencia de una capa profunda de M. pectoral pars thoracicus, el buen desarrollo de los músculos anterbrachiales, como también la ocurrencia de un deslizamiento carnoso del vientre proximal de M. bíceps braquial. Este documento es el inicio de un análisis funcional de la arquitectura muscular en esta especie y puede servir de base para futuras comparaciones taxonómicas.


Subject(s)
Animals , Birds/anatomy & histology , Forelimb/anatomy & histology , Muscle, Skeletal/anatomy & histology
6.
Braz. j. morphol. sci ; 28(1): 4-10, Jan.-Mar. 2011. ilus
Article in English | LILACS | ID: lil-644124

ABSTRACT

Embryos of Caiman yacare were collected and subjected to the bone clearing and staining protocol in orderto analyze the ontogenetic patterns of ossification of the pectoral girdle and forelimb skeleton. The osseousstructure of the girdle and forelimbs of C. yacare begins to ossify starting at 30 days of incubation, withthe presence of dye retention in the scapula, coracoids, humerus, radius and ulna bones. During embryonicdevelopment, the autopodio of C. yacare has four bones in the carpus, the radial, ulnar, pisiform and carpaldistal 4+5 bone. Their ossification begins at 39 days of incubation with the radial, followed by the ulnar, and at54 days, the pisiform and the distal carpal 4 + 5. Each mesopodio has 5 metacarpi and are present 15 phalanges,two in digits I and V, three in digits II and IV, and four in digit III (phalangeal formula 2:3:4:3:2). Ossificationof the metacarpi starts at 27 days of incubation, following the sequence MCII=MCIII=MCIV>MCI>MCV.The first phalanges begin the process of ossification on day 36, continuing up to the last day of incubation.The sequence of ossification of the proximal phalanges is PPI=PPII=PPIII>PPIV=PPV, that of the medialphalanges is MPII>MPpIII>MPdIII>MPIV, and that of the distal phalanges is DPI>DPII>DPIII>DPV>DPIV.The ontogenetic pattern of the bones of the forepaw of C. yacare generally differs from that of other reptiles,although there are some similarities.


Subject(s)
Animals , Forelimb/anatomy & histology , Forelimb/embryology , Osteogenesis/physiology , Osteogenesis/genetics , Alligators and Crocodiles/physiology , Alligators and Crocodiles/metabolism , Reptiles
7.
An. acad. bras. ciênc ; 83(1): 221-233, Mar. 2011. ilus, tab
Article in English | LILACS | ID: lil-578293

ABSTRACT

A forelimb of a new sauropod dinosaur (Angolatitan adamastor n. gen. et sp.) from the Late Turonian of Iembe (Bengo Province) represents the first dinosaur discovery in Angola, and is one of the few occurrences of sauropod dinosaurs in sub-Saharan Africa collected with good chronological controls. The marginal marine sediments yielding the specimen are reported to be late Turonian in age and, thus it represents a non-titanosaurian sauropod in sub-Saharan Africa at a time taken to be dominated by titanosaurian forms. Moreover, Angolatitan adamastor is the only basal Somphospondyli known in the Late Cretaceous which implies in the existence of relict forms in Africa.


Um membro anterior de um novo dinossauro saurópode (Angolatitan adamastor n. gen. et sp.) do Turoniano Superior de Iembe (Bengo) representa a descoberta do primeiro dinossauro em Angola e é uma das poucas ocorrências de dinossauros saurópodes na África Subsaariana recolhidos com bons controles cronológicos. Os sedimentos marinhos marginais de onde provém o espécime estão datados do Turoniano superior e, portanto, trata-se de um saurópodes não-titanossauro na África subsaariana onde predominavam titanossauros. Além disso, Angolatitan adamastor é o único Somphospondyli basal conhecido no Cretáceo Superior, o que implica a sobrevivência de formas-relíquia na África.


Subject(s)
Animals , Bone and Bones/anatomy & histology , Dinosaurs/anatomy & histology , Dinosaurs/classification , Fossils , Angola , Forelimb/anatomy & histology , Paleontology , Phylogeography
8.
Rev. biol. trop ; 56(4): 1893-1904, Dec. 2008. ilus, graf, tab
Article in Spanish | LILACS | ID: lil-637786

ABSTRACT

Identification of individual jaguars (Panthera onca) and pumas (Puma concolor) based on footprint morphometry (Carnivora: Felidae). Estimating feline abundance becomes particularly difficult, sometimes impossible, due to their elusive behavior and extensive space requirements. Available techniques are expensive and/or poorly efficient, therefore alternative methods are needed. The objective of this study was to assess the possibility of identifying individual jaguars and pumas based on morphometric analyses of their tracks. The footprints of five jaguars and four pumas were drawn and the foot (hind or fore foot, left or right foot) and the substrate were recorded. We took 16 measures from each footprint including lengths, widths, areas and angles. Variables were analyzed by using Principal Component Analysis (PCA) and substituted by the first Principal Component (PC) (> 70 % variance). We assessed the effect of the substrate and type of foot by means of paired t-student tests, and found differences between fore and hind feet and footprints from the same individual when made on soil or sand. No differences were found between right or left feet. The footprints changed over time as revealed by Multiple ANOVA. Different individuals could be identifyied based on discriminant analyses with more than 70 % confidence. We conclude that this method is feasible and can be useful when studying endangered felines. Rev. Biol. Trop. 56 (4): 1893-1904. Epub 2008 December 12.


Estimar la abundancia de felinos resulta particular-mente difícil o, incluso imposible, debido a su comportamiento críptico y sus amplios requerimiento espaciales. Las técnicas disponibles para estimar abundancia son costosas y poco eficientes, por lo que es necesario proponer métodos alternativos. El objetivo de este trabajo fue evaluar la capacidad de identificación de individuos utilizando el análisis morfométrico de huellas en yaguares y pumas. Para ello, se dibujaron huellas de cinco yaguares y cuatro pumas, registrándose el tipo de pata que dio origen a la huella y el sustrato. Para cada huella se tomaron 16 mediciones morfológicas de ángulos, largos, anchos y áreas. Las variables de largos, anchos y áreas fueron analizadas con un Análisis de Componentes Principales (ACP) y sustituidas por el primer componente principal (más del 70 % de la varianza en todos los casos). Se evaluó el efecto del sustrato y del tipo de pata a partir de pruebas t-pareadas, encontrándose diferencias entre huellas del mismo individuo dibujadas a partir de arena o tierra (t-pareadas p < 0.05), así como diferencias en todas las variables para patas delanteras y traseras (t-pareadas p < 0.05 en todos los casos). No se encontraron diferencias entre patas izquierdas o derechas. El efecto de la edad de la huella se estudió con Análisis Múltiples de Varianza, en los que se revelaron diferencias en las variables con respecto a la edad de la huella. Se realizaron análisis discriminantes por especies, sustrato de la huella y tipo de pata, para determinar la capacidad del método de discriminar entre individuos. Se obtuvo una adecuada separación de los individuos con más del 70 % de confianza. Se concluye que este método es factible y puede ser de gran utilidad especialmente en el caso de felinos amenazados.


Subject(s)
Animals , Female , Male , Forelimb/anatomy & histology , Hindlimb/anatomy & histology , Panthera/classification , Puma/classification , Population Density , Panthera/anatomy & histology , Puma/anatomy & histology , Reproducibility of Results , Venezuela
9.
Braz. j. biol ; 68(4): 897-904, Nov. 2008. ilus, mapas, tab, graf
Article in English | LILACS | ID: lil-504511

ABSTRACT

Among Vespertilionidae species, sexual size dimorphism is very well documented, in which females are larger than males. The differences are mainly in body weight, skull measurements and forearm length. Studies have discussed some hypothesis for this phenomenon. However, very little information is known about sexual size dimorphism in Myotis nigricans (Schinz, 1821) in Brazil. In this sense, the goal of this paper is to present a study of this phenomenon in the species. For this, we present a quantitative analysis of sexual size dimorphism assessed by traditional morphometrics. Ten skull measurements in addition to the forearm length of adult specimens were taken. Results of traditional morphometrics revealed sexual size dimorphism in five skull measurements and in the forearm length. Females were larger than males. These differences can be attributed to natural selection on large female size for increase fecundity. Bat females of the Vespertilionidae family are usually larger than males in order to perform parental care appropriately and to provide a successful reproductive process.


Entre as espécies de Vespertilionidae, o dimorfismo sexual, no qual as fêmeas são maiores que os machos, é bem documentado. As diferenças aparecem principalmente no peso do corpo, nas medidas cranianas e no comprimento do antebraço. Estudos têm discutido algumas hipóteses para este fenômeno. Contudo, poucas são as informações conhecidas sobre dimorfismo sexual de tamanho para a espécie Myotis nigricans (Schinz, 1821) no Brasil. O objetivo deste artigo é apresentar um estudo deste fenômeno na espécie. Para isso, apresentamos uma análise quantitativa do dimorfismo sexual através da morfometria tradicional, no qual 10 medidas cranianas e o comprimento do antebraço foram tomados. Resultados da morfometria tradicional revelaram dimorfismo sexual em cinco das dez medidas cranianas e no comprimento do antebraço. Em todas as medidas, as fêmeas foram maiores que os machos. As diferenças podem ser atribuídas à seleção natural, favorecendo tamanho maior para as fêmeas para aumentar a fecundidade. Fêmeas da família Vespertilionidae são geralmente maiores a fim de desempenhar adequadamente o cuidado parental e prover processo reprodutivo com sucesso.


Subject(s)
Animals , Female , Male , Body Size , Chiroptera/anatomy & histology , Forelimb/anatomy & histology , Sex Characteristics , Skull/anatomy & histology , Brazil , Chiroptera/classification
10.
Int. j. morphol ; 21(1): 23-28, Mar. 2003. ilus, tab
Article in English | LILACS | ID: lil-359414

ABSTRACT

RESUMEN: El objetivo del trabajo fue describir, en 20 perros adultos (Canis familiaris) machos y hembras de iguales proporciones, los sitios de inserción de los ligamentos colateral medial y oblicuo de la articulación del codo y su evaluación morfométrica además de analizar los huesos (húmero, radio y ulna) que forman parte de esta articulación. El ligamento colateral medial se divididió en porciones craneal y caudal, encontrándose que la porción craneal es larga y estrecha, com valores medios de 3,30 + 0,36 cm de largo y 0,26 + 0,06 cm de ancho, y penetra en el espacio interóseo, fijándose en la superficie caudolateral proximal del radio. El ligamento oblicuo es capsular y también se divide en porciones craneal y caudal. La primera porción se fija al borde medial proximal del radio y envuelve los tendones de inserción de los músculos braquial y bíceps braquial, con valores medios de 2,94 + 0,30 cm de largo y 0,28 + 0,08 cm de ancho. La porción craneal del ligamento colateral medial y la porción caudal del ligamento oblicuo se confunden, ocurriendo esto porque, probablemente, es una región que actúa como un refuerzo para las estructuras ligamentosas adyacentes.


Subject(s)
Animals , Dogs , Collateral Ligaments/anatomy & histology , Collateral Ligaments/physiology , Forelimb/anatomy & histology , Dogs/anatomy & histology , Joints
11.
Rev. bras. ortop ; 32(11): 899-904, nov. 1997. ilus
Article in Portuguese | LILACS | ID: lil-209281

ABSTRACT

A reconstruçäo das polias digitais anulares com o uso de uma polia artificial tecida em fios de poliéster trançado, semelhante ao uso para fazer ligamentos artificiais para procedimentos reconstrutivos do joelho (Artrolig), foi estudada num modelo experimental. Foram operados 24 coelhos machos da raça Nova Zelância, distribuídos em três grupos conforme o período de observaçäo pós-operatória, de 4, 8 e 12 semanas; um animal em cada grupo foi utilizado como controle, para estudo da polia digital natural intocada. O aparelho flexor digital da garra correspondente ao dedo anular de humanos das patas dianteiras direitas era abordado através de uma incisäo médio-lateral; a polia sobre a falange proximal era ressecada, deixando um coto de cerca de 2mm de cada lado do canal flexor e a polia artificial era suturada de cada lado, sobre o tendao íntegro. Os resultados foram avaliados por meio de estudos macroscópicos e histológicos. Ao exame macroscópico dos espécimes, observou-se em todos os grupos a formaçäo de uma capa fibrosa ao redor da polia artificial, que impedia quase completamente o deslizamento dos tendöes. Ao exame histológico, observou-se que a capa era formada por tecido fibroso de maturaçäo progressiva, cujas fibras foram lentamente orientando-se no sentido transversal ao eixo de deslizamento do tendäo entremeadas com as fibras da polia artificial e dispondo-se ao seu redor de forma helicoidal. Havia, ainda, infiltrado inflamatório ao redor da neopolia, mas pouco exuberante e de caráter regressivo com o tempo, näo tendo sido observada a formaçäo de reaçöes de corpo estranho em nenhum grupo. Näo se observou a definiçäo de um espaço, nem de um tecido de características mesoteliais, na interface neopolia-tendäo. Concluiu-se que a formaçäo da capa fibrosa ao redor da neopolia e do tendäo deveu-se a agressäo mecânica do material, mas a ausência de reaçäo de corpo estranho indicou a biocompatibilidade do material, o qual, todavia, na forma estudada, foi inadequada para a reconstruçäo das polias digitais anulares.


Subject(s)
Animals , Male , Rabbits , Biocompatible Materials , Forelimb/surgery , Polyesters/therapeutic use , Tendons/surgery , Forelimb/anatomy & histology , Tendons/anatomy & histology
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