Artroplastias totais do quadril com prótese PCA (Porous Coated Anatomic) Total hip arthroplasty with PCA (Porous Coated Anatomic) prosthesis

Foram realizadas 27 artroplastias totais do quadril nos anos de 1988 e 1993, com próteses do quadril PCA (Anatômica com revestimento poroso) em 26 pacientes. O tempo médio de seguimento foi de nove anos. Foram excluídos desta avaliação sete quadris: um devido a infecção profunda precoce, dois referentes a pacientes falecidos de causa não relacionada a operação e quatro em que os pacientes não foram localizados para a presente avaliação. A idade média no tempo da operação foi de 53 anos. O diagnóstico pré-operatório foi de osteoartrite primária em nove pacientes, osteoartrite secundária em sete pacientes e artrite inflamatória em quatro pacientes. Os pacientes foram avaliados do ponto de vista clínico, radiográfico e subjetivo. As radiografias foram estudadas em relação a ocorrência de osteólise, migração ou afrouxamento da taça, desgaste do polietileno, desprendimento de contas, afundamento ou afrouxamento da haste femoral, reabsorção proximal do fêmur, reação periosteal, hipertrofia cortical e pedestal. Os resultados clínicos foram bons em 17 quadris (85%). Três quadris apresentaram maus resultados (15%) devido a migração e soltura da taça em dois casos e desgaste do polietileno em um caso. Houve concordância entre os resultados clínicos e subjetivos. Entretanto algumas alterações radiográficas observadas não se relacionaram com maus resultados.Between 1988 and 1993 we performed 27 hip arthroplasties with the PCA prosthesis (Porous Coated Anatomic) in 26 patients. The average duration of the follow-up was nine years. We excluded seven hips from this review: one due early deep infection, two died of unrelated cause, and four were lost to follow-up evaluation. The average age at surgery was 53 years. The preoperative diagnosis was primary osteoarthritis in nine patients, secondary osteoarthritis in seven patients, osteonecrosis in six patients and inflammatory arthritis in four patients. The patients were analysed clinically, radiographically and subjectively. The X-Rays were studied for the occurrence of osteolysis, migration or loosening of the cup, wear of the polyethylene, beads shedding, subsidence or loosening of the stem, stress shielding, periosteal reaction and distal cortical hypertrophy. Seventeen hips (85%) were rated clinically good results. Three hips were rated poor (15%) due migration of the cup in two cases and wear of the polyethylene in one case. There were concordance between the clinical and the subjective results. However several radiographic findings were not related to poor results

Neotropical freshwater fisheries : A dataset of occurrence and abundance of freshwater fishes in the Neotropics

The Neotropical region hosts 4225 freshwater fish species, ranking first among the world's most diverse regions for freshwater fishes. Our NEOTROPICAL FRESHWATER FISHES data set is the first to produce a large-scale Neotropical freshwater fish inventory, covering the entire Neotropical region from Mexico and the Caribbean in the north to the southern limits in Argentina, Paraguay, Chile, and Uruguay. We compiled 185,787 distribution records, with unique georeferenced coordinates, for the 4225 species, represented by occurrence and abundance data. The number of species for the most numerous orders are as follows: Characiformes (1289), Siluriformes (1384), Cichliformes (354), Cyprinodontiformes (245), and Gymnotiformes (135). The most recorded species was the characid Astyanax fasciatus (4696 records). We registered 116,802 distribution records for native species, compared to 1802 distribution records for nonnative species. The main aim of the NEOTROPICAL FRESHWATER FISHES data set was to make these occurrence and abundance data accessible for international researchers to develop ecological and macroecological studies, from local to regional scales, with focal fish species, families, or orders. We anticipate that the NEOTROPICAL FRESHWATER FISHES data set will be valuable for studies on a wide range of ecological processes, such as trophic cascades, fishery pressure, the effects of habitat loss and fragmentation, and the impacts of species invasion and climate change. There are no copyright restrictions on the data, and please cite this data paper when using the data in publications