OBJETIVO: Descrever e comparar clínica e radiograficamente pacientes submetidos a artroplastia total do joelho (ATJ) com implantes tibiais tipo all-polyethylene (ALP) e metal-backed (MTB). MÉTODOS: Pacientes submetidos a ATJ realizadas entre janeiro de 1998 e dezembro de 2004 foram agrupados de acordo com o tipo de implante recebido: all-polyethylene ou metal-backed. Sessenta pacientes compareceram para a avaliação, totalizando 82 joelhos operados. Destes, 22 pacientes haviam sido submetidos a ATJ apenas com ALP (12 unilaterais e 10 bilaterais), 33 pacientes apenas com MTB (26 unilaterais e sete bilaterais) e cinco pacientes foram submetidos a ATJ com ALP em um joelho e MTB em outro joelho, assim divididos: Grupo 1-37 joelhos com ALP e Grupo 2 - 45 joelhos com MTB. RESULTADOS: Não houve diferença na avaliação clínica e funcional entre os grupos. A média de radioluscência no fêmur foi de 0,838mm para os pacientes do grupo 1 e 0,356mm para os pacientes do grupo 2 (p = 0,049). Para a tíbia, na incidência AP, houve um valor médio de 2,703mm para o grupo 1 e de 0,733mm para o grupo 2 (p = 0,000). Na incidência em perfil, o valor médio de osteólise foi de 0,405mm para o grupo 1 e de 0,200mm para o grupo 2 (p = 0,074). CONCLUSÕES: Não houve diferença entre os grupos na avaliação clínica e funcional. Houve aumento da radioluscência nas artroplastias com ALP, tanto no fêmur na incidência em perfil quanto na tíbia na incidência em AP. Nível de evidência IV - Estudo tipo série de caso.

OBJECTIVE: To evaluate and clinically and roentgenographically compare two populations who had undergone total knee arthroplasty (TKA) with all-polyethylene (ALP) and metal-backed (MTB) tibial components. METHODS: Two groups of 40 patients underwent TKA between January 1988 and December 2004. Sixty patients showed up for evaluation, totaling 82 operated knees. From these, 22 patients had undergone TKA with only ALP (12 unilateral and 10 bilateral), 33 patients with only MTB (26 unilateral and 7 bilateral) and 5 patients had undergone both implants. The 82 operated knees were divided into two groups according to the type of tibial implant: Group 1 - 37 knees with ALP and Group 2 - 45 knees with MTB. RESULTS: There was no clinical or functional difference in outcome between the studied groups. The measurement of radioluscent line in the femoral component averaged 0.838 mm in Group 1 and 0.356 mm in Group 2 (p=0.049). For the tibial component, in the AP view radioluscent line measurement averaged 2.703 mm in Group 1 and 0.733 mm in Group 2 (p=0.000); and in the lateral view, the average values were 0.405 mm in Group 1 and 0.200 mm in Group 2 (p=0.074). CONCLUSIONS: There was no difference in the functional or clinical outcomes between the groups. However, radioluscent line was observed more frequently in the ALP arthroplasty group, in the lateral view in the femoral component as well as the AP view of the tibial component. Level of evidence IV - case series study.

O estudo fitoquímico de Himatanthus articulata (Vahl) Woodson permitiu o isolamento e identificação de estigmasterol, sitosterol, cicloartenol, 3beta-cinamato de alfa-amirina + 3beta-cinamato de beta-amirina, 3beta-acetato de alfa-amirina, 3beta-acetato de beta-amirina, 3beta-cinamato de lupeol, 3beta-acetato de lupeol, ácido ursólico, metilmioinositol, ácido 1beta-O-beta-D-glucopiranosilplumérico, 1beta-O-beta-D-glucopiranosilplumerídio, plumericina e isoplumericina. Essas substâncias e alguns derivados foram identificados com base na análise dos espectros de IV, EMIE e RMN de ¹H e 13C.

Chemical investigation of Himatanthus articulata (Vahl) Woodson led to the isolation of stigmasterol, sitosterol, cycloartenol, alpha-amyrin-3beta-O-cinnamoyl, beta-amyrin-3beta-O-cinnamoyl, lupeol-3beta-O-cinnamoyl, alpha-amirin-3beta-O-acetyl, beta-amirin-3beta-O-acetyl, lupeol-3beta-O-acetyl, ursolic acid, methylmyoinositol, 1beta-O-beta-D-glucopyranosylplumeric acid, plumeride-1beta-O-beta-D-glucopyranosyl, plumericin and isoplumericin. Spectroscopic analysis (IR, ¹H, 13C-NMR and MS) were used for the identification of these compounds and some derivatives.

The case of the Indigo, or Lear's Macaw, Anodorhynchus leari, is unique in South American ornithology. The species, although described more than 100 years ago, was known only through very few living specimens, which entered occasionally the bird trade, without any indication of their origins. It was presumed "probably some part of Brazil" (Salvadori, 1891). The last speculation was that it was unlikely, though not impossible, that the Indigo Macaw might not be an independem species, but rather, a hybrid between the two other well known blue macaws, Anodorhynchus hyacinthinus and A. glaucus (Voous, 1965).