[Influence of thermodisinfection on impaction of cancellous bone : An in vitro model of femoral impaction bone grafting]. / Einfluss der Thermodesinfektion auf die Impaktion spongiöser Knochen : Ein In-vitro-Modell für das femorale Impaction-Bone-Grafting.

BACKGROUND: The reconstruction of bony defects during endoprosthesis revision surgery using "impaction bone grafting" leads to the possibility of a longstanding osseous integration to achieve good clinical results. Native allogeneic cancellous bone is often used for the procedure. This study examines the influence of thermodisinfection on the impaction behaviour of cancellous bone of different geometries and on the cement distribution. METHODS: The cancellous bone was obtained from the femoral heads of 7­month old pigs. One half of the head was thermodisinfected while the other remained native. Bone chips with sizes of 3-5, 5-8 and 8-10 mm were produced. The impaction was performed in a cylinder model with an internal diameter of 30 mm and with standardized impaction force using an impactor with a weight of 1450 g. The best particle combination was used for the subsequent computer tomography examination of the cement distribution and the contact surface to the bone in different parts of the shaft in seven investigations. For statistic measurements two-dimensional variance analysis including repetitions of measurement and Bonferroni correction, the LSD post-hoc-zest and the Mann Whitney U Test were used. The error probability was set at α = 5%. The SPSS® for Windows software was used for the statistical analysis. RESULTS: The distribution of the cancellous and compacted bone also along the shaft revealed no significant difference between thermodisinfected and native cancellous bone at different levels (p > 0.05). Impacted native cancellous bone showed less inclusion of air, which resulted in a better distribution of density compared with thermodisinfected bone overall (p < 0.001). In the distal shaft area the cement volume was significantly larger in conjunction with the native bone. The overall area of cement penetration appeared to be significantly larger for native cancellous bone (p < 0.001). CONCLUSIONS: The impaction of thermodisinfected and native cancellous bone showed greater deformation of the processed bone without any significant difference in the maximum density reached at different levels. Cement volume and cement penetration were pronounced proximally in native and processed cancellous bone. The cement distribution was significantly more distal for the native bone. Distally, the stabilization of the shaft appears to be increasingly dependent on the density of the impacted spongiosa, while proximally, the penetration of the cement into cancellous bone seems to correlate with porosity.

[Free vascularised medial femoral trochlea flap : Indication and technique]. / Freies gefäßgestieltes Femurknochentransplantat bei Skaphoidpseudarthrose : Indikation und Technik.

BACKGROUND: Avascularity of fragments is a common problem in treatment of scaphoid nonunion. Therefore, vascularised bone grafts have gained increasing importance. Especially the free vascularised femoral trochlea flap has become the subject of special interest because of its particular characteristics in the last few years. OBJECTIVES: Indications for and the technique of free vascularised corticocancellous as well as osteocartilagineous femoral trochlea flap are reported according to the author's practice combined with an evaluation of these methods considering current literature. RESULTS: Indications for the free vasscularised corticocancellous femoral trochlea flap include scaphoid nonunion with avascular proximal fragment combined with humpback deformity, previous operations, extensive bone defect, and long standing nonunion. The free vascularised osteocartilagineous medial trochlea flap may replace a destroyed proximal scaphoid pole. The literature reports only a few patients with healing rates between 80 and 100 %. CONCLUSIONS: Both corticocancellous and osteocartilagineous free vascularised medial trochlea flap improve therapeutic options in treatment of difficult scaphoid nonunion. Until now only the results of a few patients have been published. Therefore, a final evaluation will be possible when long-term results in a reasonable number of patients are available.

Análise de custos do transplante alogênico de células-tronco hematopoiéticas: uma revisão integrativa / Análisis de costo del trasplante alogénico de células madre hematopoyéticas: una revisión integradora / Cost of hematopoietic stem cell’s allogeneic transplantation: an integrative review

Objective: Identifying what has been produced on cost analysis of allogeneic transplantation of hematopoietic stem cell. Method: It consists of an integrative review, where was done a search of studies on cost analysis in allogeneic transplantation. Results: There were found 265 articles, which, after application of inclusion and exclusion criteria, 13 articles, with twelve in English and two in Portuguese were selected. Eleven of these articles have made partial cost analysis, a study done systematic review of cost-effectiveness; one made economic evaluation of cost-effectiveness and cost evaluation study made about coverage for curative catheter in transplantation. Conclusion: There is a gap in the area of economic evaluation studies and the nurse should occupy this space, not only as a care manager, but also of cost.

Objetivo: Identificar o que se tem sido produzido sobre análise de custos do transplante alogênico de células tronco hematopoiéticas. Método: Consta de uma revisão integrativa, em que se fez a busca de estudos sobre análise de custos em transplante alogênico. Resultados: Foram encontrados 265 artigos dos quais após aplicação dos fatores de inclusão e exclusão foram selecionados 13 artigos, sendo 12 de língua inglesa e dois de língua portuguesa. Onze desses artigos fizeram análise parcial de custos, um estudo fez revisão sistemática sobre custo-efetividade, um fez avaliação econômica de custo-efetividade e um estudo fez avaliação de custo sobre cobertura para curativo de cateter no transplante. Conclusão: Existe uma lacuna na área de estudos de avaliação econômica e o enfermeiro deveria ocupar este espaço como gerenciador não só do cuidado, mas também de custos.

Objetivo: Identificar lo que se ha producido en el análisis de costos de trasplante de las células madre hematopoyéticas alogénicas. Método: Se trata de una revisión integradora, donde hizo la búsqueda de los estudios sobre el análisis de costos en el trasplante alogénico. Resultados: Se encontraron 265 artículos que después de la aplicación de criterios de inclusión y exclusión 13 artículos, con doce en Inglés y dos en Portugués fueron seleccionados. Once de estos artículos han hecho análisis parcial de los costos, un estudio realizado una revisión sistemática de la rentabilidad, una evaluación económica hecha de costo-efectividad y el estudio de evaluación de costos sobre la cobertura de catéter curativa en el trasplante. Conclusión: Existe un vacío en el área de estudios de evaluación económica y la enfermera debe ocupar este espacio, no sólo como gestora de la atención, sino también de costo.